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GIGABYTE Launches Custom AMD Radeon RX 6950 XT, Radeon RX 6750 XT and Radeon RX 6650 XT

GIGABYTE TECHNOLOGY Co. Ltd, a leading manufacturer of premium gaming hardware, today announced GIGABYTE provides a variety of options to meet the needs of more customers. The AORUS series is recommended for enthusiasts who want the ultimate performance and a colorful RGB appearance. The GAMING OC series is the best choice of performance-minded gamers. The EAGLE series is the best choice for those who desire a unique design.

the breakthrough AMD RDNA2 gaming architecture, include process optimizations and software and firmware enhancements, and offer high-bandwidth, low-latency AMD Infinity Cache memory technology and ultra-fast 18 Gbps GDDR6 memory. They also support Microsoft Windows 11 and Microsoft DirectX 12 Ultimate, AMD FidelityFX Super Resolution (FSR), the forthcoming AMD FSR 2.0 and AMD Radeon Super Resolution upscaling technologies, as well as other advanced features that provide visually stunning, high-refresh rate gaming experiences.

PowerColor Refreshes its Graphics Card Lineup

TUL Corporation, a leading and innovative manufacturer of AMD graphic cards since 1997, is announcing today new additions to its AMD Graphics card lineup. With higher GPU clocks and faster memory, the latest AMD Radeon RX 6950 XT, AMD Radeon RX 6750 XT and AMD Radeon RX 6650 XT graphics cards will give gamers the extra edge on their favorite game titles.

The new graphics cards leverage the breakthrough AMD RDNA 2 gaming architecture, include process optimizations and software and firmware enhancements, and offer high-bandwidth, low-latency AMD Infinity Cache memory technology and ultra-fast 18 Gbps GDDR6 memory. They also support Microsoft Windows 11 and Microsoft DirectX 12 Ultimate, AMD FidelityFX Super Resolution (FSR), the forthcoming AMD FSR 2.01 and AMD Radeon Super Resolution upscaling technologies, as well as other advanced features that provide visually stunning, high-refresh rate gaming experiences.

New Specs of AMD RDNA3 GPUs Emerge

A new list of specifications of AMD's next-generation "Navi 3x" GPUs based on the RDNA3 graphics architecture emerged, with lower CU counts than previously reported. It turns out that the large "Navi 31" GPU comes with 12,288 stream processors across 48 WGP (workgroup processors), 12 SA (shader arrays), and 6 SE (shader engines). This still amounts to a 140% increase in stream processors over the Navi 21. This chip will power SKUs that succeed the Radeon RX 6800-series and RX 6900-series.

The second largest silicon from the series is the Navi 32, with two-thirds the number-crunching machinery of the Navi 31. That's 8,192 stream processors across 32 WGPs, 8 SAs, and 4 SEs. The Navi 32 silicon powers successors of the RX 6700-series. The third largest chip is the Navi 33, with half the muscle of the Navi 32, and one-third that of the Navi 31. This means 4,096 stream processors spread across 16 WGP, 4 SA, and 2 SE. There's no word on other specs such as memory bus width, but we've heard rumors of AMD doubling down on the Infinity Cache memory technology, by giving these chips even larger on-die caches. RDNA3 is also expected to improve ray tracing performance, as more of the ray tracing pipeline is handled by fixed-function hardware.

MSI Debuts the Radeon RX 6400 AERO ITX Graphics Card

MSI, a leading brand in True Gaming hardware, is proud to announce the new MSI AMD Radeon RX 6400 AERO ITX graphics card. The new graphics card is designed to make incredible 1080p gaming experiences for popular AAA and esports titles accessible to more gamers than ever.

Built on the high-performance, energy efficient AMD RDNA gaming architecture, AMD Radeon RX 6400 graphics cards feature high-bandwidth, low-latency AMD Infinity Cache memory technology and high-speed GDDR6 memory. They also support Microsoft Windows 11 and Microsoft DirectX 12 Ultimate, AMD FidelityFX Super Resolution (FSR) and AMD Radeon Super Resolution (RSR) upscaling technologies, AMD Smart Access Memory technology, as well as other advanced features that provide visually stunning, high-refresh rate gaming experiences.

GIGABYTE Announces Radeon RX 6400 Eagle and WindForce Graphics Cards

GIGABYTE TECHNOLOGY Co. Ltd, a leading manufacturer of premium gaming hardware, today announced the GIGABYTE Radeon RX 6400 EAGLE 4G and Radeon RX 6400 D6 Low Profile 4G graphics cards, equipped with the excellent GIGABYTE cooling system and engineered to deliver great 1080p gaming performance with remarkable efficiency. Blaze a trail into tomorrow and enjoy vivid virtual worlds and elevated experiences with the power of next-generation graphics.

Built on the high-performance, energy efficient AMD RDNA gaming architecture, the new graphics cards feature high-bandwidth, low-latency AMD Infinity Cache memory technology and high-speed GDDR6 memory. They also support Microsoft Windows 11 and Microsoft DirectX 12 Ultimate, AMD FidelityFX Super Resolution (FSR) and AMD Radeon Super Resolution (RSR) upscaling technologies, AMD Smart Access Memory technology, as well as other advanced features that provide visually stunning, high-refresh rate gaming experiences.

AMD Radeon RX 6400 Launched at $159

AMD formally launched the entry-level Radeon RX 6400 graphics card. At an MSRP of $159, this is the most affordable graphics card from the Radeon RX 6000 series. It is based on the same RDNA2 graphics architecture as the rest of the RX 6000 lineup, and the smallest silicon of them all, the "Navi 23." This chip is built on the TSMC N6 (6 nm) silicon fabrication process.

The RX 6400 shares the "Navi 23" silicon with the RX 6500 XT launched earlier this year. AMD enabled 12 out of 16 RDNA2 compute units on the silicon, resulting in 768 stream processors, 48 TMUs, 12 Ray Accelerators, and 32 ROPs. The memory configuration is similar to the RX 6500 XT, with 4 GB of GDDR6 memory across a 64-bit wide memory bus. This is the same 16 Gbps-rated memory, which means 128 GB/s bandwidth on tap. There's also 16 MB of Infinity Cache. The engine clocks (GPU clocks) are set at 2039 MHz (game) and 2321 MHz (boost). With its given specs, the RX 6400 has a typical graphics power (TGP) of just 53 W, and so cards can do without any power connectors.

PowerColor Launches its Radeon RX 6500 XT Series

TUL Corporation, a leading and innovative manufacturer of AMD graphic cards since 1997, today announced its Radeon RX 6500 XT line up. The latest graphics cards are built on AMD RDNA2 gaming architecture and designed to make incredible 1080p gaming experiences for popular AAA and esports titles accessible to more gamers.

Every gamer has different needs and PowerColor is offering its Radeon RX 6500 XT graphics cards in two- and single-fan configurations for those looking to build a small form factor gaming PC. With high-efficient cooling and PowerColor's Mute Fan Technology, PowerColor Radeon RX 6500 XT graphics cards are cool and quiet, ideal for anyone looking to game without distractions.

New AMD Radeon PRO W6000 Series Graphics Unleash High-Efficiency, Powerful CAD Performance for Mainstream Workstation Users

Today AMD announced new additions to the AMD Radeon PRO W6000 Series desktop and mobile workstation graphics lineup, designed to deliver exceptional performance, stability and reliability for professional users, including CAD designers, engineers and office knowledge workers. The new AMD Radeon PRO W6400 graphics card is built on the high-performance, energy efficient AMD RDNA 2 graphics architecture and advanced 6 nm manufacturing process technology, with 16 MB of high-bandwidth, low-latency AMD Infinity Cache memory technology acting as a bandwidth amplifier. Offering an ideal blend of performance and efficiency at an affordable price, the new graphics card is optimized for the requirements of today's popular CAD and office productivity applications in a compact design that can be easily added to modern small-form-factor desktops.

Compared to the previous generation, the AMD Radeon PRO W6400 graphics card delivers up to three times higher performance in Autodesk AutoCAD 2022 during 3D orbit rotational tests in shaded modes. It also offers up to 87 percent higher performance in McNeel Rhino using the Holomark 2 benchmark with mesh, object and model data stress tests. The new graphics card also offers performance gains in typical office applications and workloads, such as videoconferencing, email and web browsing, where reliability and stability are key. Additions to the AMD Radeon PRO product family also include the AMD Radeon PRO W6500M and AMD Radeon PRO W6300M GPUs for next-gen professional mobile workstations. The new GPUs are also built on AMD RDNA 2 graphics architecture with 6 nm process technology and harness up to 8 MB of AMD Infinity Cache memory technology to deliver ultra-high viewport frame rates, dependability and exceptional performance for professional applications.

BIOSTAR Launches its Radeon RX 6500 XT Graphics Card

BIOSTAR, a leading manufacturer of motherboards, graphics cards, and storage devices, today introduced the new BIOSTAR AMD Radeon RX 6500 XT graphics card. The new BIOSTAR Radeon RX 6500 XT graphics card is built on the breakthrough AMD RDNA2 gaming architecture, engineered to deliver incredible gaming performance with remarkable efficiency.

The BIOSTAR Radeon RX 6500 XT graphics card is designed to make incredible 1080p gaming experiences for popular AAA and esports titles accessible to more gamers. It offers high-bandwidth, low-latency AMD Infinity Cache and high-speed 4 GB GDDR6 memory, as well as support for AMD Smart Access Memory technology, AMD FidelityFX Super Resolution upscaling technology, Variable Rate Shading (VRS) and other advanced features that provide visually stunning, high-refresh rate gaming experiences.

AMD Navi 24 GPU Powering RX 6500 XT Built on 6nm

AMD's first GPU built on the N6 (6 nm) silicon fabrication process isn't some big RX 7000 series behemoth, but the smallest chip from the Navi 2x GPU family, codenamed Navi 24. Based on the same RDNA2 graphics architecture as the rest of the RX 6000 series, the Navi 24 physically packs 1,024 stream processors across 16 compute units (8 WGPs), and on the RX 6500 XT, reportedly comes with 4 GB of memory across a 64-bit wide memory bus. The chip also packs a tiny 16 MB Infinity Cache. VideoCardz scored the first renders of the upcoming Radeon RX 6500 XT and RX 6400, which are based on the Navi 24. The RX 6500 XT features a full-height, 2-slot board design that uses a simple aluminium monoblock fan-heatsink. The RX 6400, on the other hand, is not just low-profile (half-height), but also single-slot.

Update Dec 28th: Unless we're mistaken, the SMDs near the PCIe interface in those renders seem to suggest that the GPU features a PCIe x4 interface. This should offer sufficient bandwidth for a GPU in this segment, and should help lower the pin-count of the GPU, as well as board costs.

AMD Radeon "Navi 3x" Could See 50% Increase in Shaders, Double the Cache Memory

AMD's next generation Radeon "Navi 3x" line of GPUs could see a 50% increase in shaders and a doubling Infinity Cache memory size, according to some educated-guesswork and intelligence by Greymon55, a reliable source with GPU leaks. The Navi 31, Navi 32, and Navi 33 chips are expected to debut the new RDNA3 graphics architecture, and succeed the 6 nm optical-shrinks of existing Navi 2x chips that AMD is rumored to be working on.

The top Navi 31 part allegedly features 60 workgroup processors (WGPs), or 120 compute units. Assuming an RDNA3 CU still holds 64 stream processors, you're looking at 7,680 stream processors, a 50% increase over Navi 21. The Navi 32 silicon features 40 WGPs, and exactly the same number of shaders as the current Navi 21, at 5,120. The smallest of the three, the Navi 33, packs 16 WGPs, or 2,048 shaders. There is a generational doubling in cache memory, with 256 MB on the Navi 31, 192 MB on the Navi 32, and 64 MB on the Navi 33. Interestingly, the memory sizes and bus widths are unchanged, but AMD could leverage faster GDDR6 memory types. 2022 will see the likes of Samsung ship GDDR6 chips with data-rates as high as 24 Gbps.

AMD Readies Radeon RX 6500 XT and RX 6400 Graphics Cards

AMD is preparing to wrap up its Radeon RX 6000 series desktop discrete graphics card family with two new SKUs, the RX 6500 XT and the RX 6400. The two debut the company's smallest piece of silicon based on the RDNA2 graphics architecture, codenamed "Navi 24," to the desktop space. The RX 6500 XT maxes out this silicon, enabling all 16 compute units physically present, working out to 1,024 stream processors. The RX 6400 is significantly cut down, featuring 12 out of 16 CUs, which means 768 stream processors.

The Navi 24 silicon features a 64-bit wide GDDR6 memory interface, which is paired with 4 GB of discrete memory on both SKUs. This memory operates at 14 Gbps data-rate, which works out to 112 GB/s memory bandwidth. Interestingly, the Infinity Cache makes a comeback, in the form of a tiny 16 MB on-die cache that cushions the memory sub-system. The RX 6500 XT could have just enough muscle for e-sports gaming at 1080p, while the RX 6400 seems more like a card you'd buy just because your processor lacks integrated graphics (eg: if you're using a Ryzen 5000X processor and just need a graphics solution that meets the latest display I/O and media-acceleration standards). At this point we don't know if the Navi 24 is DirectX 12 Ultimate compliant, i.e., featuring Ray Accelerators on its compute units. Both cards are expected to launch in Q1, 2022.

AMD Could Use Infinity Cache Branding for Chiplet 3D Vertical Cache

AMD in its Computex 2021 presentation showed off its upcoming "Zen 3" CCD (CPU complex dies) featuring 64 MB of "3D vertical cache" memory on top of the 32 MB L3 cache. The die-on-die stacked contraption, AMD claims, provides an up to 15% gaming performance uplift, as well as significant improvements for enterprise applications that can benefit from the 96 MB of total last-level cache per chiplet. Ahead of the its debut later today in the company's rumored EPYC "Milan-X" enterprise processor reveal, we're learning that AMD could brand 3D Vertical Cache as "3D Infinity Cache."

This came to light when Greymon55, a reliable source with AMD and NVIDIA leaks, used the term "3D IFC," and affirmed it to be "3D Infinity Cache." AMD realized that its GPUs and CPUs have a lot of untapped performance potential with use of large on-die caches that can make up for much of the hardware's memory-management optimization. The RDNA2 family of gaming GPUs feature up to 128 MB of on-die Infinite Cache memory operating at bandwidths as high as 16 Tbps, allowing AMD to stick to narrower 256-bit wide GDDR6 memory interfaces even on its highest-end RX 6900 XT graphics cards. For CCDs, this could mean added cushioning for data transfers between the CPU cores and the centralized memory controllers located in the sIOD (server I/O die) or cIOD (client I/O die in case of Ryzen parts).

BIOSTAR Announces its Radeon RX 6600 Graphics Card

BIOSTAR, a leading manufacturer of motherboards, graphics cards and storage devices, today announced the new BIOSTAR AMD Radeon RX 6600 graphics card. Built on the breakthrough AMD RDNA 2 gaming architecture, the new BIOSTAR AMD Radeon RX 6600 graphics card offers 8 GB of GDDR6 memory on a 128-bit bus, 32 MB of high-performance AMD Infinity Cache and support for high-bandwidth PCI Express 4.0 technology. Optimized for performance, power efficiency and durability, the new BIOSTAR AMD Radeon RX 6600 graphics card enables high-framerate 1080p gaming in the latest AAA titles.

The BIOSTAR AMD Radeon RX 6600 graphics card offers 28 compute units with a Game Clock frequency of 2,044 MHz and a Boost Clock frequency of up to 2,491 MHz, enabling incredible 1080p gaming experiences without breaking a sweat. In addition, support for DisplayPort 1.4 with DSC and HDMI 2.1 VRR enables crisp, vivid video output.

PowerColor Unveils Radeon RX 6600 Series Graphics Cards

TUL Corporation, a leading and innovative manufacturer of AMD graphic cards since 1997, today announced the launch of the PowerColor Radeon RX 6600 HELLHOUND and FIGHTER graphics cards. The latest AMD Radeon RX 6600 series graphics cards are designed to deliver butter smooth high-fidelity, high-refresh rate 1080p gaming experiences.

AMD Radeon RX 6600 graphics cards are based on the breakthrough AMD RDNA 2 gaming architecture, designed to deliver optimal balance of performance and power efficiency. Offering 32 MB of high-performance AMD Infinity Cache, 8 GB of GDDR6 memory, AMD Smart Access Memory 1 and other advanced features, the new graphics cards are designed to bring next-generation desktop gaming experiences to the midrange market. They also support the AMD FidelityFX Super Resolution open-source spatial upscaling solution, which is designed to increase framerates while delivering high-resolution gaming experiences.

MSI Unveils Radeon RX 6600 MECH 2X Graphics Card

As a leading brand in True Gaming hardware, MSI is proud to announce the MSI Radeon RX 6600 MECH 2X graphics card, designed to deliver incredible 1080p gaming experiences for a wide range of enthusiast gamers. The new graphics cards are built on the breakthrough AMD RDNA 2 gaming architecture, designed to deliver the optimal balance of performance and power efficiency. Offering 32 MB of high-performance AMD Infinity Cache, 8 GB of GDDR6 memory, AMD Smart Access Memory 1 and other advanced features, the new graphics cards are designed to bring next-generation desktop gaming experiences to the midrange market. They also support the AMD FidelityFX Super Resolution open-source spatial upscaling solution, which is designed to increase framerates while delivering high-resolution gaming experiences.

AMD Announces Radeon RX 6600 Graphics Card

AMD today launched the AMD Radeon RX 6600 graphics card, designed to provide visually stunning, high-refresh rate 1080p gaming experiences to the midrange market. The AMD Radeon RX 6600 graphics card leverages breakthrough AMD RDNA 2 architecture, the only gaming architecture that spans from desktop PCs, laptops and consoles to mobile devices and automotive infotainment systems. Offering 32 MB of high-performance AMD Infinity Cache, 8 GB of GDDR6 memory, AMD Smart Access Memory technology and support for the Microsoft Windows 11 operating system, the AMD Radeon RX 6600 graphics card is designed to bring next-generation desktop-level experiences to PC gamers. It also supports the AMD FidelityFX Super Resolution open-source spatial upscaling solution, which is designed to increase framerates in select titles while delivering high-resolution gaming experiences.

The AMD Radeon RX 6600 graphics card is designed with the needs of future-ready, high-performance 1080p gamers in mind. Capable of driving 100+ FPS in top AAA titles, the AMD Radeon RX 6600 graphics card also offers up to 1.3X better performance-per-watt than the competition in select titles in 1080p at max settings.

New AMD Radeon PRO W6000X Series GPUs Bring Groundbreaking High-Performance AMD RDNA 2 Architecture to Mac Pro

AMD today announced availability of the new AMD Radeon PRO W6000X series GPUs for Mac Pro. The new GPU product line delivers exceptional performance and incredible visual fidelity to power a wide variety of demanding professional applications and workloads, including 3D rendering, 8K video compositing, color correction and more.

Built on groundbreaking AMD RDNA 2 architecture, AMD Infinity Cache and other advanced technologies, the new workstation graphics line-up includes the AMD Radeon PRO W6900X and AMD Radeon PRO W6800X GPUs. Mac Pro users also have the option of choosing the AMD Radeon PRO W6800X Duo graphics card, a dual-GPU configuration that leverages high-speed AMD Infinity Fabric interconnect technology to deliver outstanding levels of compute performance.

AMD Announces Radeon RX 6600 XT Graphics Card

AMD today announced the new Radeon RX 6600 XT graphics card, its latest entrant to the RX 6000 series, based on the RDNA2 graphics architecture, with full DirectX 12 Ultimate support, including raytracing. The RX 6600 XT is suitable for AAA gaming at 1080p, or e-sports gaming at 1440p. The card debuts the new 7 nm Navi 23 silicon to the desktop, and maxes it out. It is endowed with 2,048 stream processors across 32 RDNA2 compute units, 128 TMUs, 32 ROPs, and a 128-bit wide memory interface, holding 8 GB of GDDR6 memory running at 16 Gbps (256 GB/s bandwidth). The chip also has 32 MB of Infinity Cache memory. With a board power of 160 W, the card can make do with a single 8-pin PCIe power connector. The game clocks are up to 2359 MHz.

As for performance, AMD claims that the RX 6600 XT offers a 2.2-2.5 times performance gain over the GeForce GTX 1060, providing a viable upgrade. It also offers a 40% performance uplift over the previous-generation RX 5600 XT, and runs consistently faster than the RX 5700, perhaps even trading blows with the RX 5700 XT. In the current generation, AMD claims a 15% performance lead over the GeForce RTX 3060 on average, with both cards having Resizable BAR / Smart Access Memory enabled, at 1080p. Available from August 10, the card starts at USD $379, and is a partner-exclusive, meaning that only custom-design cards will be available, the company will not sell reference design ones.

Next-Gen AMD Radeon RDNA3 Flagship To Feature 15,360 Stream Processors?

AMD's next generation RDNA3 graphics architecture generation could see a near-quadrupling in raw SIMD muscle over the current RDNA2, according to a spectacular rumor. Apparently, the company will deploy as many as 15,360 stream processors (quadruple that of a Radeon RX 6800), and spread across 60 WGPs (Workgroup Processors), and do away with the compute unit. This is possibly because the RDNA3 compute unit won't be as independent as the ones on the original RDNA or even RDNA2, which begins to see groups of two CUs share common resources.

Another set of rumors suggest that AMD won't play NVIDIA's game of designing GPUs with wide memory bus widths, and instead build on its Infinity Cache technology, by increasing the on-die cache size and bandwidth, while retaining "affordable" discrete memory bus widths, such as 256-bit. As for the chip itself, it's rumored that the top RDNA3 part, the so-called "Navi 31," could feature a multi-chip module design (at least two logic dies), each with 30 WGPs. Each of the two is expected to be built on a next-gen silicon fabrication node that's either TSMC N5 (5 nm), or a special 6 nm node TSMC is designing for AMD. Much like the next-generation "Lovelace" architecture by NVIDIA, AMD's RDNA3 could see the light of the day only in 2022.

AMD Radeon RX 6600 XT Could See July 30 Unveil at ChinaJoy

On the road to its rumored August market availability, AMD could unveil its Radeon RX 6600 XT graphics card on July 30, at the ChinaJoy expo. The RX 6600 XT is a middle-of-the-market product that AMD likely expects to sell in heaps, in markets such as China. It competes with NVIDIA's GeForce RTX 3060 series. According to VideoCardz, the RX 6600 XT could see a July 30 unveiling, which usually comes with some teasers as to what buyers can expect from the card; followed by an August 6 unboxing embargo. The card launches on August 11. The RX 6600 (non-XT) is expected to launch later, in September. The RX 6600 XT is based on the 7 nm "Navi 23" silicon, and is rumored to feature 2,048 stream processors across 32 RDNA2 compute units. It also comes with 8 GB of GDDR6 memory across a 128-bit wide memory bus, and 32 MB of on-die Infinity Cache memory. AMD is likely targeting the 1080p AAA and 1440p e-sports crowds with this card.

AMD Radeon RX 6600 XT Arrives this August

AMD is allegedly preparing for an August 2021 debut of its Radeon RX 6600 XT graphics card in the retail segment, according to tech YouTuber Coreteks. Released exclusively as custom-design cards, through the company's AIB partners, the card will reportedly come with an MSRP price of USD $399, or roughly $100 less than that of the RX 6700 XT (which is being scalped for north of $800). The lack of a reference-design (MBA) model in the retail channel means that the card will not be sold through the AMD website.

The Radeon RX 6600 XT will reportedly be based on the 7 nm "Navi 23" silicon, although it remains to be seen if it maxes the silicon out. 8 GB will be the standard memory amount, across a 128-bit wide GDDR6 memory interface, cushioned by a 32 MB Infinity Cache. As for performance, Coreteks predicts that the RX 6600 XT will perform ±5% of the RX 5700 XT and the GTX 1080 Ti, which could make it a formidable card for AAA gaming at 1080p, or at 1440p with FSR.

AMD Announces Radeon PRO W6000 Series Professional Graphics Cards Based on RDNA2

AMD today announced the AMD Radeon PRO W6000 series workstation graphics, delivering exceptional performance, stability and reliability for professional users. The new graphics products were designed and optimized to power demanding architectural design workloads, ultra-high resolution media projects, complex design and engineering simulations, and advanced image and video editing applications.

Built on award-winning AMD RDNA2 architecture, the foundation of next generation, high-powered PCs, laptops and many of today's game consoles, the new product line features the AMD Radeon PRO W6800, the fastest AMD RDNA workstation graphics card ever. It also includes the AMD Radeon PRO W6600 graphics card, meticulously engineered for ultra-high performance workflows, and the AMD Radeon PRO W6600M GPU, designed to power professional mobile workstations.

GPU Memory Latency Tested on AMD's RDNA 2 and NVIDIA's Ampere Architecture

Graphics cards have been developed over the years so that they feature multi-level cache hierarchies. These levels of cache have been engineered to fill in the gap between memory and compute, a growing problem that cripples the performance of GPUs in many applications. Different GPU vendors, like AMD and NVIDIA, have different sizes of register files, L1, and L2 caches, depending on the architecture. For example, the amount of L2 cache on NVIDIA's A100 GPU is 40 MB, which is seven times larger compared to the previous generation V100. That just shows how much new applications require bigger cache sizes, which is ever-increasing to satisfy the needs.

Today, we have an interesting report coming from Chips and Cheese. The website has decided to measure GPU memory latency of the latest generation of cards - AMD's RDNA 2 and NVIDIA's Ampere. By using simple pointer chasing tests in OpenCL, we get interesting results. RDNA 2 cache is fast and massive. Compared to Ampere, cache latency is much lower, while the VRAM latency is about the same. NVIDIA uses a two-level cache system consisting out of L1 and L2, which seems to be a rather slow solution. Data coming from Ampere's SM, which holds L1 cache, to the outside L2 is taking over 100 ns of latency.

AMD Patents Chiplet-based GPU Design With Active Cache Bridge

AMD on April 1st published a new patent application that seems to show the way its chiplet GPU design is moving towards. Before you say it, it's a patent application; there's no possibility for an April Fool's joke on this sort of move. The new patent develops on AMD's previous one, which only featured a passive bridge connecting the different GPU chiplets and their processing resources. If you want to read a slightly deeper dive of sorts on what chiplets are and why they are important for the future of graphics (and computing in general), look to this article here on TPU.

The new design interprets the active bridge connecting the chiplets as a last-level cache - think of it as L3, a unifying highway of data that is readily exposed to all the chiplets (in this patent, a three-chiplet design). It's essentially AMD's RDNA 2 Infinity Cache, though it's not only used as a cache here (and for good effect, if the Infinity Cache design on RDNA 2 and its performance uplift is anything to go by); it also serves as an active interconnect between the GPU chiplets that allow for the exchange and synchronization of information, whenever and however required. This also allows for the registry and cache to be exposed as a unified block for developers, abstracting them from having to program towards a system with a tri-way cache design. There are also of course yield benefits to be taken here, as there are with AMD's Zen chiplet designs, and the ability to scale up performance without any monolithic designs that are heavy in power requirements. The integrated, active cache bridge would also certainly help in reducing latency and maintaining chiplet processing coherency.
AMD Chiplet Design Patent with Active Cache Hierarchy AMD Chiplet Design Patent with Active Cache Hierarchy AMD Chiplet Design Patent with Active Cache Hierarchy AMD Chiplet Design Patent with Active Cache Hierarchy
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