[The Exiled]

• Intel Arc A770 Review - Finally a Third Competitor
  
  
• Intel Arc A770 Tested with PCIe 3.0 and Resizable BAR Off
  
  
• Intel Arc A750 Review - Great Value

You really need resizable-BAR for the Arc A770 to perform as advertised. The card is simply unusable without it, and Intel said as much throughout the marketing events leading up to this launch. With Resizable-BAR disabled, performance drops like a rock down to just 77% of the performance you get with it enabled at 1080p, and just 76% at 1440p—nearly a quarter of the performance lost. But that's averaged across all game tests, and presents an incomplete picture. Intel is working to improve performance of R-BAR disabled/unavailable machines through driver updates, but even these could only slightly narrow the gap, Intel isn't hopeful of a bringing performance up to levels of RTX 3060 with R-BAR disabled; because it needs to redesign its entire memory-management software architecture.

Intel Arc A770 16GB Limited Edition GPU Review & Benchmarks + Intel GPUs Are Here! ARC A770 & A750 Review & Benchmarks