The first benchmark results for desktop cards with Intel's Limited Edition of Arc have been spotted. Two graphics APIs, Vulkan and OpenCL, were used to test both cards. 

Only the first GPU could hint at its actual performance, which may or may not translate to raw gaming power, videocardz noticed. The A770 tested is the Limited Edition with all 512 Xe Vector Engines and 16GB of VRAM (or 4096 FP32 cores). It was tested with the A750, which has 448 Vector Engines and 8 GB of VRAM (3584 FP32 cores). Both cards have been seen on the Geekbench website in an ASUS ROG Z690 Apex & Core i9-12900KS system with both cards installed. The A770 got 73536 points on the Vulkan test, while the A750 only got 66609 points. This is a difference of 10.4% between the two cards. In the OpenCL test, the difference between the A770 and the A750 is again around 12%, which is in favor of the full ACM-G10 model.

Overall it seems that Intel's best and mot fast GPU A770 seems to switch places with the RTX 3060 in both tests at best (table courtesy videocardz).

OpenCL and Vulkan benchmarks were run on Arc A770 and A750 GPUs.