AMD

it does not work like that... 8tflop rdna3 is becaue they count the fpu perf like it is done on ampere/ada ie both the int and fpu alu can to fp while older u arch had fixed alu for int and fp.

And there is a problem with the rdna3 where this function is not working correctly so we only get the additional 30% fpu perf from the additional fp alu units.

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and like u sait the memory is holding back the apus but it will still not perform like an 8Tflop gpu.