AMD Radeon Pro W7800 GPU Tweaked to Simulate "RX 7800 XT"

An AMD Navi 32 die was belatedly observed in a Forbes video feature on the company's CEO and President Lisa Su—this small tidbit fired up the PC hardware community once again with speculation about why Team Red has not yet released proper mid-range RDNA 3 game-oriented models. A handful of news sites have recently reported that a Navi 32 GPU sits at the heart of AMD's fairly new workstation-grade AMD Radeon Pro W7800 32 GB GDDR6 graphics card, but fact checkers have quickly pointed out that the $2499 (MSRP) product is actually based on Navi 31 . Sites have theorized about the makeup of a possible "Radeon RX 7800" GPU and assumed that a similarly named/numbered workstation model would offer a preview of things to come.

Igor Wallossek (of Igor's Lab fame) has conducted an interesting investigation into this matter. He has put a Radeon Pro W7800 test unit through its paces as a gaming card, but the high-end nature of the Navi 31 GPU leads him to believe that the performance level on tap would be roughly equivalent to a hypothetical "RX 7800 XT." Igor assumes that his simulated gaming card will have access to a smaller pool of VRAM (16 GB instead of 32 GB)—he achieves this via the memtestcl program, since "RDNA 3 no longer allows us to emulate the cards directly." He also sets provisions for differing power consumption due to the workstation card being an efficiency-focused product: "The Radeon Pro W7800 has a TBP of 260 watts, my own extrapolation results in a TBP of around 270 watts for the RTX 7800XT based on the efficiency values of the other two Navi 31 cards."
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