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AMD Radeon RX 6000 GPUs revealed in macOS Big Sur code: up to 5120 cores, 2.5 GHz

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Listed plainly and clearly within macOS code is the number of compute units each GPU will have: Navi 21 will have 80, Navi 22 will have 40, and Navi 23 will have 32. Assuming that each compute unit corresponds to sixty-four shaders, the GPUs will have 5120, 2560, and 2048 shaders respectively. The clock speeds for each GPU are a little more ill-defined, and we’ll explain why in a second, but the driver lists speeds from 2 GHz to 2.5 GHz.

There’s also a mention of a Navi 31 GPU with 80 compute units; 5120 shaders; but there’s no other info on that chip yet – that one’s still a year from release.

Radeon RX 5000

  Navi 10 / RX 5700XT Navi 14 / RX 5500XT
Shaders 2560 1536
Clock 1400 MHz 1605 MHz 1900 MHz 1607 MHz
TDP 180 W 225 W 110 W 130 W


Radeon RX 6000

  Navi 21 Navi 22 Navi 23
Codename Sienna Cichlid Navy Flounder Dimgrey Cavefish
Shaders 5120 2560 2048
Clock 2050 MHz → 2200 MHz 2500 MHz  
TDP 200 W → 238 W 170 W  






Definitely some nice increases here over previous Navi cards, my 5700 might get replaced with a new AMD card as long as they have done something for h264 hardware encoding quality and hopefully added hardware AV1 decode.


Folding@Home and other Distributed GPU Computing tasks should get some nice increases well well.  Hopefully we don't see a bunch of bots and miners snatch these up.  AMD has been quoted by some unconfirmed sources that they won't face the same supply issues as Nvidia did with the 3080 and 3090 launch, but time will tell what happens.


We still have yet to really see ray-tracing performance and how they will compete with some of Nvidia's other features.

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