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- Nov 4, 2023
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It runs on the AI cores and most certainly won't be heavily taxing them. 9070 XT has 128 AI cores and I'm sure FSR4 will work on all RDNA4 cards, right down to the weakest ones with like 32.
7900 XTX has 192 AI cores. If it doesn't get FSR4 then honestly, screw AMD.
If I'm not mistaken the key issue is that RDNA 3 AI cores lack matrix multiplication which is the key reason why FSR 4 is exclusive to RDNA 4 which has matrix multiplication.