BIOSTAR, a leading brand of motherboards, graphics cards, and storage devices, today announces BIOS updates for their Intel 400 series motherboards to support the AMD Smart Access Memory technology. AMD Smart Access Memory (SAM) allows the CPU to get full access to the GPU memory, users will gain up to 11% in gaming performance. BIOSTAR consumers can now enjoy an extra performance boost with their Intel 400 series motherboards pairing 10th Gen Intel Core processors and AMD Radeon RX 6000 series graphics cards.

BIOSTAR, a leading brand of motherboards, graphics cards, and storage devices today, announces BIOS updates for their AM4 400/500 series motherboards to support the AMD Smart Access Memory technology.

AMD Smart Access Memory (SAM) allows the CPU to get full access to the GPU memory, users will gain up to 11% in gaming performance. BIOSTAR consumers can now enjoy an extra performance boost with their 400/500 series motherboards pairing AMD Ryzen 5000 series processors and Radeon RX 6000 series graphics cards.

AMD Ryzen 3000 "Matisse" processors based on the "Zen 2" microarchitecture, as well as older AMD processors based on "Zen+" and "Zen" microarchitectures, do not support the company's Smart Access Memory (SAM) feature being introduced with Radeon RX 6000 series graphics cards. SAM is essentially a branding of the Resizable Base-Address Register (Resizable-BAR) feature developed by the PCI-SIG; which enables a processor to see a graphics card's entire video memory as a single addressable block, rather than through 256-megabyte apertures. Apparently the PCI-Express root complex of Ryzen 5000 "Vermeer" processors introduce an instruction called full-rate _pdep_u32/64, which is required for resizable-BAR to work.

It gets more interesting—Intel processors have been supporting this feature since the company's 4th Gen Core "Haswell," which introduced it with its 20-lane PCI-Express gen 3.0 root-complex. This means that every Intel processor dating back to 2014 can technically support Resizable-BAR, and it's just a matter of motherboard vendors releasing UEFI firmware updates for their products (i.e. Intel 8-series chipsets and later). AMD extensively advertises SAM as adding a 1-2% performance boost to Radeon RX 6800 series graphics cards. Since this is a PCI-SIG feature, NVIDIA plans to add support for it on some of its GPUs, too. Meanwhile, in addition to AMD 500-series chipsets, even certain Intel 400-series chipset motherboards started receiving Resizable BAR support through firmware updates.

AMD's recently-introduced SAM (Smart Access memory) feature enables users pairing an RX 6000 series graphics card with a Ryzen 5000 series CPU to take advantage of a long-lost PCIe feature in the form of its Resizable Bar. However, AMD currently only markets this technology for that particular component combination, even though the base technology isn't AMD's own, but is rather included in the PCIe specification. It's only a matter of time until NVIDIA enables the feature for its graphics cards, and there shouldn't be any technical problem on enabling it within Intel's platform as well. Now, we have results (coming from ASCII.jp) from an Intel Z490 motherboard (ASUS ROG Maximus XII EXTREME) with firmware 1002, from November 27th, paired with AMD's RX 6800 XT. And SAM does work independently of actual platform.

Paired with an Intel Core i9-10900K, AMD's RX 6800 XT shows performance increases across the board throughout the test games - which are games AMD themselves have confirmed SAM is working with. This means testing was done with Assassin's Creed Valhalla, Forza Horizon 4, Red Dead Redemption 2, and Rainbow Six Siege. The results speak for themselves (SAM results are the top ones in the charts). There are sometimes massive improvements in minimum framerates, considerable gains in average framerates, and almost no change in the maximum framerates reported for these games on this given system. Do note that the chart for Forza Horizon 4 has an error, and the tested resolution is actually 1440p, not 1080p.

TUL Corporation, a leading and innovative manufacturer of AMD graphic cards since 1997, today is announcing its new PowerColor Fighter RX 6800 based on AMD's latest RDNA2 architecture and with 16 GB of GDDR6, offering solid 4K gaming performance for the most price conscious gamers. Powered by AMD RDNA 2 architecture, PowerColor Fighter RX 6800 graphics card features 60 Compute Units, 128 MB of all new AMD Infinity Cache and 16 GB of dedicated GDDR6 memory, is engineered to deliver ultra-high frame rates and serious 4K resolution gaming.

PowerColor Fighter RX 6800 graphics card is designed for gamers on a budget but with powerful gaming performance in mind. Fighter RX 6800 is paired with effective triple cooling fan design, Mute Fan Technology, BIOS switch button, and reinforced back plate, so the Fighter can fight with you to enjoy exceptional gaming experiences.

When AMD introduced its Smart Access Memory technology, everyone was wondering will other GPU and CPU providers, namely Intel and NVIDIA, develop a similar solution to complement their offerings. The SAM technology is just AMD's way of naming PCIe resizable Base Address Register (BAR) technology, which has been present in PCI specifications for years as an optional feature. Why it's emerging now you might wonder. Well, the currently used PCIe revision has reached enough bandwidth on the bus to complement the complex data movement that GPU requires and now supports the use of the wider VRAM frame buffer.

It appears that not only AMD has this technology in its portfolio. ASUS has updated its BIOS firmware for its ROG Maximus XII Apex motherboard based on the Intel Z490 chipset, with some pretty interesting features. According to Tom's Hardware, we have information that the next release of BIOS firmware update 1003 for the ROG Maximus XII Apex motherboard will bring support for resizable BAR, making it a first on an Intel platform. For now, the beta 1002 BIOS supports it, however, a stable version will roll out in BIOS 1003. With the motherboard using PCIe 3.0 standard, a lower-bandwidth revision compared to AMD's platform, it will be interesting to see how resizable BAR is performing once the first tests come.

Update 09:45 am UTC: Chris Wefers, ASUS PR Germany, has announced that resizable BAR will be coming to all ASUS motherboards with Intel Z490/H470/B460 chipset, with alleged 13.37% performance increase in Forza Horizon 4, per ASUSes testing. You can see the test configuration in the image below.

GIGABYTE TECHNOLOGY Co. Ltd, a leading manufacturer of motherboards, graphics cards, and hardware solutions, today announces the latest BIOS update on AMD X570、B550 and A520 motherboards for the features of AMD Smart Access Memory and Rage mode. These innovative features enabling a bandwidth boost when the CPU accesses the GPU memory on graphics cards, which enhances and unleashes the ultimate system performance. Now, users with an "AMD Yes" platform on GIGABYTE AMD 500 series motherboards with AMD Ryzen 5000 processors and Radeon RX 6000 series VGA cards, will be able to experience an extra gaming and performance boost.

Through the AMD Smart Access Memory and Rage mode, the CPU has access to the GPU memory. This access unlocks the limited bandwidth to full bandwidth when running 4K gaming. By accessing the GDDR6 GPU memory more rapidly on AMD 500 series motherboards paired with Ryzen 5000 series processors and Radeon RX 6000 series VGA cards, CPU's operating performance and gaming performance are both improved. Based on results of gaming tests with Smart Access Memory and Rage Mode enabled, the 1080P gaming improved by 17%, and a performance increase of 10% was unlocked on 2K and 4K resolutions.

AMD announced Radeon Smart Access Memory (SAM) alongside the RX 6800 series as a feature to increase video memory available to the CPU. SAM is AMD's implementation of the resizable BAR feature found in the PCI Express specification. AMD Smart Access Memory is only available when using an AMD Ryzen 5000 series process and AMD Radeon RX 6800 series graphics card on a compatible motherboard. The feature was initially advertised as a 500 series motherboard exclusive feature but AMD has recently released the new AGESA v2 1.1.0.0 update which should enable support for SAM on B450 and X470 motherboards with a BIOS update.

AMD's Smart Access Memory (SAM) is a new technology that AMD decided to launch with its Ryzen 5000 series CPUs and Radeon RX 6000 series GPUs. The technology aims to solve the problem where a CPU can only access a fraction of GPU VRAM at once, making some bottlenecks in the system. By utilizing the bandwidth of PCIe, the SAM expands its data channels and uses all the speed that the PCIe connection offers. However, it appears that AMD might not be the only company offering such technology. Thanks to Gamer's Nexus, they got a reply from NVIDIA regarding a technology similar to AMD's SAM.

NVIDIA responded that: "The capability for resizable BAR is part of the PCI Express spec. NVIDIA hardware supports this functionality and will enable it on Ampere GPUs through future software updates. We have it working internally and are seeing similar performance results." And indeed, it has been a part of the PCIe specification since 2008. This document dating to 2008 says that "This optional ECN adds a capability for Functions with BARs to report various options for sizes of their memory mapped resources that will operate properly. Also added is an ability for software to program the size to configure the BAR to." Every PCIe compatible device can enable it with the driver update through the software.