More from Bare Feats:
real world speed test results for performance minded Macintosh users
barefeats.com
Lou
Pro Vega II --> 4096 stream processors, 64 ROPs , and 32GB HBM vRAM.
RX 6900 XT ---> 5120 stream processor, 128 ROPs, and 16GB DDR6 ( + 25% processor count , +100% ROPs )
RX 6800 XT ----> 4608 stream processor 128 ROPs , and 16GB DDR6 ( + 13% processor count , + 100% ROPs )
Pro 6800 -----> 3840 stream processors 96 ROPs , and 32GB DDR6 ( -6% processor count , +50% ROPs )
( W6800X same count as Pro. )
Infinity Cache the same on the 6000 sereies. ( 128MB)
The 6900 XT beats the Vega by
Lightroom -18% (quicker )
Octane -35%
Blender -46%
Basemark +96% (higher frames )
GFXBench +48% (higher frames )
Warhammer +32% ( higher frames )
On most of these benchmarks is is mostly raster and/or cache more than this was computationally bound.
But is illustrative that is now eyeball deep in XDR Display connection "costs" and/or something that deeply leverages Infinity Fabric links ... not tons of tractions for the MPX modules. The non tested W6900X probably just completely fails on Performance/$ , but there probably a few wins there on the 6800 based alternatives.
Not particularly surprising as Apple probably wasn't aiming for the best gaming cards options. ( they can rely on 3rd party options for that. They don't have to be "another one". )