The right way to use AMD Sensible Entry Reminiscence And Nvidia Resizable BAR

We recently covered the technical background of Nvidia's Resizable BAR (Base Address Register) and AMD's Smart Access Memory. Now is the time to look into and explain the uses of these technologies. While they accomplish the same goal of giving the CPU far better access to game assets for faster allocation, the process for activating them is slightly different.

AMD Smart Memory Access

To be able to use the Smart Access Memory (SAM), you need the following:

In other words, you need end-to-end AMD hardware and very up-to-date hardware. This excludes a significant portion of PC gamers, but it also means that AMD knows exactly what hardware it is and that the technology is working effectively.

Step 1: Update the BIOS on your motherboard to the latest version – download it from your manufacturer's website.

step 2: Install the latest graphics driver from the AMD driver repository.

step 3: Enter the UEFI / BIOS by pressing the specific button on your board at startup.

Step 4: Enable two settings to support 4G decoding and resizing. In the BIOS of our Asus TUF Gaming X570-Plus motherboard, we noticed that Asus added a simple button that changed both settings together.

Step 5: Save your changes, exit the BIOS and switch to Windows 10.

If you take a look back at the AMD website, you will find that it has a BIOS screenshot related to BAR resizing support. While we may prefer the name Smart Access Memory, Resizable BAR may be the more persistent terminology.

Nvidia Resizable BAR

Nvidia also provides detailed information to walk you through the process of enabling Resizable BAR. However, since there are more permutations than AMD, you need to proceed with some caution. It's interesting to note that Nvidia supports older AMD 400 motherboards, but not AMD 3000 CPUs.

To use Resizable BAR with an Nvidia GPU you will need:

  • AMD 400 or 500 series motherboard with Ryzen 5000 CPU or 10th or 11th generation Intel motherboard and CPU
  • Nvidia GeForce RTX 30 graphics card

Step 1: Update the BIOS on your motherboard BIOS to the latest version – download it from the manufacturer's website.

step 2: Install the latest graphics driver from the Nvidia website.

step 3: Enter the UEFI / BIOS by pressing the specific button on your board at startup.

Step 4: Update the BIOS of your graphics card. Nvidia provides the necessary links for its many partners, and while the process is a little daunting with GPU prices so high, we followed the process for our Palit RTX 3080 Gaming Pro with no problems.

Step 5: Check the Nvidia drivers to make sure the customizable bar has been enabled.

Should I enable Resizable BAR?

We will answer with a cautious “yes”, but this is not a one-way bet. For starters, you need to be aware that updating your VGA BIOS could potentially damage your graphics card. Second, the list of games that could offer a performance boost using these technologies is fairly short right now, although it will inevitably grow:

  • Assassin's Creed Valhalla
  • Battlefield V
  • Border areas 3
  • control
  • Cyberpunk 2077
  • Death stranding
  • Dirt 5
  • F1 2020
  • Forza Horizon 4
  • Gears 5
  • Godfall
  • Hitman 2
  • Hitman 3
  • Horizon Zero Dawn
  • Metro Exodus
  • Red Dead Redemption 2
  • Watch Dogs Legion

Perhaps the most important point is that you are unlikely to see a dramatic increase in performance. Techspot has shown very mixed results. So, we think it's more about keeping an eye on a developing technology than getting started as an early adopter. We have little doubt that technology will improve as game developers continue to support their games and learn to make the most of them.

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