Not nearly as big as the gains we've seen from the Radeon GPUs in this title, but still an extra ~8-9% is nothing to sneeze at.
Bar access 1080p#
Starting with Assassin's Creed Valhalla, we find that at 1080p performance is boosted by 8%, and 9% at 1440p, some nice gains there. We're testing using the Ryzen 9 5950X on the MSI X570 Unify motherboard with 32GB of DDR4-3200 CL14 dual-rank, dual-channel memory. So it's time we jump into the benchmark results.
Now of those 17 games we've tested 12, along with 8 others that aren't currently officially supported, so that could be quite interesting. If true, this will be a win for Nvidia and their resizable BAR implementation will be much better than AMD's.Īs of writing, the whitelist of supported games from Nvidia is fairly limited, consisting of just 17 games. We saw performance regression of up to 7% in certain titles with the Radeon RX 6800.
Basically Nvidia's saying you can enjoy all the benefits of resizable BAR without any of the shortcomings. That way you won't have to worry about bugs or performance decreases, and won't have to rely on the community to benchmark each title and discover whether Resizable BAR is beneficial in the games you're playing." However, there are also titles that see a decrease in performance, so Nvidia will be pre-testing titles and using game profiles to enable Resizable BAR only when it has a positive performance impact. In our testing, we've found some titles benefit from a few percent, up to 12%. "In practice, the performance benefits of Resizable BAR can vary substantially from game to game. Now, something we found interesting about Nvidia's implementation is a claim they made in their announcement. Under the details section you'll find "resizable BAR" and if it's working properly, the status will simply read 'yes'. Once those steps are complete, you can verify if resizable BAR is working by opening the Nvidia control panel and entering the system information section.
Bar access driver#
Support for resizable BAR was added with the March 30 release, but at this point just use the most up to date driver and you'll be set. In our case, the MSI X570 Unify running with a Ryzen 9 5950X was already updated as we used it to test the Radeon RX 6800 before.ģ) The latest GeForce Game Ready driver.
Bar access update#
After a reboot, the VBIOS update was done.Ģ) You'll require a compatible motherboard that supports resizable BAR, including its BIOS version. We ran the tool and it took just a few moments to complete. We navigated to Asus' support website, went to Driver & Tools > BIOS & Firmware and downloaded the latest BIOS. Anyone who purchased an RTX 3060 already has the required VBIOS, but RTX 3060 Ti, 3070, 30 owners will need to update.įor this article, we updated the VBIOS of the ROG Strix RTX 3080 OC and the process was simple.
Bar access series#
There are 3 things you'll need to enable resizable BAR on your RTX 30 series GPU:ġ) A supporting VBIOS is required. Thus, Nvidia has jump aboard the resizable BAR train and now GeForce RTX 30 GPUs support it. The net gain is still welcome and it's possible resizable BAR could play a more consistent role in the future if developers design games with that capability in mind. In the end, when testing across a large sample of games we found that on average SAM brought a small 3% boost at 1440p. However, a deeper dive into SAM revealed a number of instances where performance was reduced, or in most other cases, it made no difference at all. Enabling SAM boosts performance of the Radeon RX 6800 in Assassin's Creed Valhalla by 19%, 18% in Hitman 2, 14% in Borderlands 3 and 13% in Godfall, those are some seriously impressive gains and you're sacrificing nothing to achieve them.
Bar access free#
Of course, it's free performance and not something we often come by when testing new features. The claim was your AMD CPU/GPU combo could produce a performance uplift of 10% or greater in a number of games with SAM enabled, creating some buzz, but it was short lived after all. AMD made it sound as if this was a new optimization they had developed and would be exclusive to their products, but that's not the case. The way AMD promoted and implemented Resizable BAR on Radeon 6000 GPUs, it required to be paired with a Ryzen 5000 series CPU and newer 500 series motherboard. AMD was touting a new feature called Smart Access Memory or SAM, but in reality AMD had just rebranded a PCI Express feature, known as "Resizable BAR" that had gone unused for quite some time. Resizable BAR became part of the GPU performance conversation with the release of AMD's Radeon RX 6000 series. Today we're testing out the newly supported Resizable BAR feature on Nvidia GeForce GPUs by benchmarking an Asus ROG Strix RTX 3080 OC graphics card.
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