01-12-2019, 05:18 AM
https://www.extremetech.com/gaming/28364...isreported
Quote:In this case, there’s a correction we have to issue regarding AMD and its just-announced Radeon VII. Earlier today, ExtremeTech ran a story claiming that this GPU would have a core configuration of 3840:240:128 (GPU cores:texture units:render outputs). This information was based on reporting from other sites who have attended the show and attested to the accuracy of this information. The data was reported in the context of AMD disclosing further details about the GPU while at the show, not as rumor or unverified reporting, which is why we didn’t present the usual caveats when we gave this data.
According to an AMD spokesperson we’ve since spoken to, the number of reported ROPs for the Radeon VII is incorrect. The 128 figure, while widely and credibly stated, is wrong. “Radeon VII is 64 ROPs,” the AMD spokesperson stated to us. The GPU’s actual configuration is therefore 3840:240:64.
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Now that we know Radeon VII isn’t a 128 ROP card, the GPU’s smaller performance improvements over Vega 64 make much more sense. Latency and increased memory bandwidth, combined with additional clocks and possible low-level efficiency improvements executed in the shift from 14nm to 7nm account for the improved performance. It seemed strange that Radeon VII wouldn’t gain more performance from such a large fillrate improvement. Now we know why. It also means our speculations about the additional ROPs accounting for some of the GPU’s power consumption are incorrect for obvious reasons. Increased memory bandwidth and doubling the total onboard amount of RAM will still play a part in total power consumption, however.
We don’t know yet if AMD reps at the show were misinformed or exactly how the incorrect evidence spread, but ExtremeTech regrets the error.