Lots of two AMD Radeon RX 6800 XT video cards tested in various games and resolutions

Although Crossfire and SLI technologies are a thing of the past, users can still take advantage of multiple graphics card configurations. In 2015, it was reported that DirectX 12 would provide support for the explicit multi-GPU Multi-Adapter. This technology allows you to combine graphics cards from different manufacturers to work together. However, it required the support of the game developers, and after 5 years, hardly anyone uses it.

Soon after, both NVIDIA and AMD began phasing out their technologies to pool multiple GPU resources on a single system. In the latest line of NVIDIA GeForce RTX 30 graphics cards, only one model supports this blending capability through NVLink. But this is a very expensive video card that costs $ 1499 and few people had a chance to test it. At the same time, AMD recently released a series of Radeon RX 6800 graphics cards, and two Radeon RX 6800XT devices combined will cost less than an NVIDIA flagship, around $ 1300. A TweakTown enthusiast was able to test two Radeon RX 6800 XT graphics cards. in a multi-GPU configuration using a reference model and a second associated XFX model.

The tests were carried out on four games using three different image resolutions. These games are heavily based on AMD technology, so multi-GPU support is a no-brainer. Multiple GPU support must be enabled through Radeon software and will be visible in TechPowerUP GPU-Z software.

As expected, multi-GPU support makes sense at higher resolutions, as 4K performance is severely limited by the GPU. Depending on your game settings, when using two Radeon RX 6800 XT graphics cards, you may see a performance scale of 101% to 156% at 1080p.

When using a 1440p resolution and two graphics cards in the Deus Ex game, the performance even drops to 95%. At the same time, Strange Brigade and Sniper Elite 4 are well optimized for multi-GPU setup.

Source: videocardz