Intel Arc Alchemist GPUs landed about a year ago, and now compete among the best graphics cards. Drivers have been a recurring theme with Arc, both good and bad, but Intel has made strides to improve things and close the performance gap. To that end, Intel has released new drivers specifically aiming to improve its DirectX 11 performance.
We spoke with Intel earlier this week, and the gains for now are limited to specific games. To provide some background detail, after the initial Arc launch, Intel found that many of the base driver elements for their GPUs — integrated and discrete — were suboptimal, particularly for Arc. With integrated graphics, you can basically always assume that the GPU is the bottleneck. Anything that could be done to move work back to the CPU to alleviate that bottleneck was a "good thing." Obviously, that same logic doesn't necessarily apply any longer when the GPU becomes ten times faster, as in the case of the Arc A770.
So, since the initial launch, Intel spent a lot of time and effort reworking the drivers. We saw this first in early 2023 when Intel touted gains in DirectX 9 performance. The initial drivers for Arc leveraged Microsoft's DX9 on DX12 tools, which provided compatibility and got things up and running. There was a lot of performance left on the table, however. We're told Intel's driver team worked with the open source DXVK project (DirectX on Vulkan) to optimize the various elements better — something it couldn't do with the closed-source Microsoft tool. Eventually, things reached the state that all the DX9 support (or most of it?) was transitioned to using the new DXVK-optimized path.
We're now getting a similar treatment for DirectX 11 games — not in the DXVK sense, but Intel has worked to build a from the ground-up different code path for DX11 support into its drivers. Since the existing DX11 support already works, even if performance isn't ideal, the focus has been on testing specific games and then "whitelisting" them in the drivers to use the new code path. At present, Intel has whitelisted ten popular DX11 games: Apex Legends, Counter-Strike 2, Destiny 2, DOTA 2, Genshin Impact, GTA Online / GTA V, League of Legends, Middle-Earth: Shadow of War, Overwatch 2, and Valorant.
In short, the latest drivers optimize how the graphics hardware interacts with the DX11 API. By fine-tuning various parameters and implementing more efficient rendering techniques (it didn't go into any low-level details), Intel improved overall performance on DirectX 11 games. Here are the results of its internal performance testing, comparing its latest drivers (internal versions 4571 and 4642, though version 4644 drivers are now out) with the original launch drivers (3490).
