TechPowerUp today released the latest version of TechPowerUp GPU-Z, the popular graphics subsystem information and monitoring utility. With the latest version 2.38.0, we are introducing the ability to detect Resizable BAR support. GPU-Z can now tell whether Resizable BAR is supported, and if so, whether it is enabled. AMD refers to Resizable BAR as AMD Smart Access Memory, but it is a feature developed by the PCI-SIG, which lets your CPU see the entire video memory of your discrete graphics card as a single addressable block, rather than through 256 MB apertures. This feature has been found to improve performance in games that can take advantage of it. Resizable BAR status can now be viewed from the main tab, right next to the multi-GPU status.

The latest TechPowerUp GPU-Z also adds support for new and upcoming GPUs, including AMD Radeon RX 6700 XT, RX 6700, RX 6600 XT, RX 6600, and Ryzen "Lucienne" mobile processor iGPUs. Support is also added for NVIDIA GeForce RTX 3070 Mobile. Other new features include the ability to monitor negative temperatures on NVIDIA GPUs. We fixed video BIOS extraction on AMD RDNA2 GPUs (Radeon RX 6000 series). Grab GPU-Z from the link below.

DOWNLOAD: TechPowerUp GPU-Z 2.38.0The change-log follows.

AMD in its "Where Gaming Begins Episode 3" online event, announced that it is introducing Smart Access Memory (resizable base address register) support to Ryzen 3000 series "Matisse" processors, based on the "Zen 2" microarchitecture. These exclude the Ryzen 3 3200G and Ryzen 5 3400G. The PCI-SIG innovated feature was, until now, restricted to the Ryzen 5000 series on the AMD platform, although is heavily proliferated across the Intel platform. Resizable BAR enables the CPU to see the graphics card's entire dedicated memory as one addressable block, rather than through 256-megabyte apertures. For game engines that are able to take advantage of the feature, this could translate to a performance boost of up to 16 percent. Be on the lookout for BIOS updates from your motherboard manufacturer.

Our initial support for "Resizable BAR" is available now for GeForce RTX 3060 desktop graphics cards and GeForce RTX 30 Series laptops. Utilizing an advanced feature of PCI Express, Resizable BAR can increase performance in certain games. Support for other desktop GPUs will follow in late March. Resizable BAR is an optional PCI Express interface technology. As you move through a world in a game, GPU memory (VRAM) constantly transfers textures, shaders and geometry via many small CPU to GPU transfers. With the ever-growing size of modern game assets, this results in a lot of transfers. Using Resizable BAR, assets can instead be requested as-needed and sent in full, so the CPU can efficiently access the entire frame buffer. And if multiple requests are made, transfers can occur concurrently, rather than queuing.

GeForce RTX 30 Series laptops with Resizable BAR-capable Intel and AMD CPUs are available now. Check with each laptop manufacturer to discover if Resizable BAR is supported on a particular model. For desktops, you will need a compatible CPU, compatible motherboard, motherboard SBIOS update, GPU VBIOS update (the GeForce RTX 3060 already ships with the necessary BIOS) and new GeForce Game Ready driver to enable Resizable BAR.

EVGA has recently released new BIOS updates for their X299, Z590, and Z490 motherboards enabling support for the PCIe Resizable BAR feature. Resizable BAR is an optional feature of the PCIe specifications which allows the CPU to access more GPU memory theoretically offering greater performance. AMD released their implementation of Resizable BAR with Smart Access Memory on Radeon RX 6000 Series graphics cards. NVIDIA responded by announcing plans to add Resizable BAR support to their RTX 30 series graphics cards starting with the RTX 3060. This new BIOS update for recent EVGA Intel motherboards will ensure that you can take full advantage of the latest graphics cards. When we tested AMD's Smart Access Memory with the Radeon RX 6800 XT we saw an average performance improvement of 2%.

EVGAThere is a new BIOS update for the EVGA X299 lineup, adding Resizable BAR support! The EVGA Z590, Z490, and X299 motherboards support this feature.

MSI announced that it will begin rolling out UEFI firmware updates for its Socket AM4 motherboards based on the AMD 400-series and 500-series chipsets, which incorporate AMD's latest AGESA Combo PI V2 1.2.0.0 microcode. These firmware updates will enable resizable BAR support for NVIDIA GeForce RTX 30-series "Ampere" graphics cards, improvements for Ryzen 5000 series "Vermeer" desktop processors, and an assortment of board model-specific improvements or fixes.

The company will begin releasing these firmware updates for its AMD 500-series chipset motherboards, and its AMD 400-series "MAX" models in January 2021. In February, it will follow up with updates for AMD 400-series non-"MAX" models. The "MAX" model name suffix for an MSI AMD 400-series motherboard denotes a board with a 32-megabyte SPI flash ROM chip that allows MSI to cram in its feature-rich ClickBIOS setup program. Keep checking the "support" section of your motherboard's product page on the MSI website for these firmware updates.

NVIDIA today announced that it is bringing the NVIDIA Ampere architecture to millions more PC gamers with the new GeForce RTX 3060 GPU. With its efficient, high-performance architecture and the second generation of NVIDIA RTX, the RTX 3060 brings amazing hardware raytracing capabilities and support for NVIDIA DLSS and other technologies, and is priced at $329.

NVIDIA's 60-class GPUs have traditionally been the single most popular cards for gamers on Steam, with the GTX 1060 long at the top of the GPU gaming charts since its introduction in 2016. An estimated 90 percent of GeForce gamers currently play with a GTX-class GPU. "There's unstoppable momentum behind raytracing, which has quickly redefined the new standard of gaming," said Matt Wuebbling, vice president of global GeForce marketing at NVIDIA. "The NVIDIA Ampere architecture has been our fastest-selling ever, and the RTX 3060 brings the strengths of the RTX 30 Series to millions more gamers everywhere."

Intel has apparently taken the CES opportunity to showcase its upcoming Rocket Lake-S CPU in gaming against one of AMD's best mainstream CPUs, packing 12 cores - although the specific model remains undisclosed. Geeknetics shared screen-grabs from the demo, done inside Metro Exodus, where the undisclosed Intel 8-core Rocket Lake-S is shown achieving higher average frame-rates compared to the AMD solution (an average of 156.54 FPS for Intel, against 147.43 FPS for AMD). The CPUs were paired with an NVIDIA RTX 3080 graphics card - and in case you're wondering whether NVIDIA's Resizable BAR capabilities have been activated for this Rocket Lake-S system, no information on that was available at time of writing (the question is raised since Intel has already announced support for the feature with NVIDIA GPUs on Tiger Lake-H).

GIGABYTE TECHNOLOGY Co. Ltd, a leading manufacturer of motherboards, graphics cards, and hardware solutions, today announced that all Z490 motherboards featuring PCIe 4.0 hardware design can support the 11th Gen. Intel Core processors perfectly by update to the latest F20 BIOS, and provide the extreme bandwidth and performance for PCIe 4.0 graphics cards and SSDs. With a snap update of the latest BIOS from GIGBAYTE's official site, users can enjoy the full pack of advantages and unlock the Resizable BAR function on GIGABYTE Z490 and H470 motherboards.

The latest 11th Gen. Intel Core processors will be launched on March 2021. The new processors keep the same architecture as the previous generation but they enable the PCIe 4.0 support, which meet a range of needs for users who expect broad bandwidth and super high transfer speed of PCIe 4.0 on the Intel platform. For those who own one of the current generation motherboards, it would be a great deal to enjoy the performance uplift on Z490 motherboards with PCIe 4.0 function and 11th Gen. Intel Core processors support.

MSI, the world leading gaming motherboard brand, releases optimized BIOS updates for AMD 500-series and 400-series motherboards. The latest AGESA Combo PI V2 1.1.9.0 beta BIOS has been released for MEG X570 GODLIKE, MEG X570 UNIFY, MEG B550 UNIFY / UNIFY-X, MPG B550 GAMING EDGE WIFI and MAG B550M MORTAR / MORTAR WIFI. And the rest models will be able to download soon in January 2021. The new BIOS supports AMD Curve Optimizer feature, as well as support for PCIe Resizable BAR function for NVIDIA graphics cards (in addition to compatible AMD ones).

When AMD introduced its Smart Access Memory (SAM) technology, it was used as one of the key advertising points for its 5000 series of Ryzen processors based on Zen 3 architecture. At the time of launch, it was believed that only the latest generation of Ryzen processors can support it and only AMD GPUs can see a benefit in performance. However, later on, many of the motherboard makers have been playing with BIOS updates and have found a way to enable resizable BAR, the technology used for SAM, on non-AMD platforms. Today, thanks to the Reddit user Merich98 we have found out that ASUS has enabled resizable BAR support via BIOS update.

The user has used BIOS version 2409, released just a few days ago, on ASUS B450-PLUS motherboard. The feat is no extraordinary because it works on a B450 motherboard, it has been supported for a long time, but rather the feat is impressive because it works with the first generation AMD Ryzen 7 1700 processor. This contradicts the theory that SAM only needs 5000 series AMD Ryzen processors to run. However, the gains were not that great. On average, the average frame rate number has increased by a small +0.839%. This could be attributed to some margin of error, so it seems like SAM is not giving much performance uplift in this case.

ASRock has released a BIOS update for their Z490 Taichi motherboard which implements a Clever Access Memory (CAM) system (might I say that's as clever as it sounds?) CAM is basically ASRock's own marketing push based on AMD's SAM, which is in itself a marketing push based on PCIe's Resizable BAR feature (the amount of marketing names employed to describe the same set of features is becoming mind-boggling). The feature is available through the 1.72 BETA Bios for the Z490 Taichi motherboard, and WCCFTech ran some quick and dirty tests on a Z490-based system with an AMD Radeon RX 6800 XT graphics card to verify what (if any) performance differences arose.

The tests were done at 4K resolution for Shadows of the Tomb Raider and Assassin's Creed: Valhalla, running on an Intel Core i7-10700K processor and 2x 8 GB sticks of DDR4-2666 memory. The results? 3.32% performance improvement under Shadows of the Tomb Raider, and an impressive 11.54% improvement for Assassin's Creed: Valhalla (images to the left feature CAM on, and images on the right show CAM off). It seems it's only a matter of time until this amazing feature that's been available (yet untapped) for years now brings some very considerable and widespread performance improvements to users independent of platform. Kinda like finding a $10 bill in an old pair of jeans.

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.

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.