Based on this:
"With RDNA 2 we get basically a 25 percent performance uplift over GCN with no work by developers at all"
Link:
https://www.theverge.com/2020/9/17/...xt-gen-gaming-performance-gpu-memory-hardware
Based on (some) evidence:
I think it's safe to assume that a 60 CU RDNA 2 GPU would get a +25% performance improvement, vs GCN GPUs, like the Radeon VII.
If clocked 23.9% higher than the Radeon VII at 2233mhz (PS5 GPU frequency), we would probably get another 12% (at least) of performance (5700 XT performance gains from higher frequencies are about equal to the percentage overclocked, divided by 2. This is based on 3d Mark:Time Spy GPU scores).
So, a minimum of 37% faster than the (GCN based) Radeon VII if RDNA 2 is clocked at 2233mhz, with 60 CUs.
That would put it ahead of the RTX 2080 TI.
Speculation and observations:
An 80 CU RDNA 2 GPU could be upto 33.3% faster than a 60 CU RDNA 2 GPU (similarly, a 90 CU GPU could be upto 50% faster).
So, a maximum of 70.3% increased performance for an 80 CU RDNA 2 GPU, vs the Radeon VII.
Comparing the 5700 to the 5700 XT, the performance is about 12.7% higher in 3D Mark (GPU score), the clocks are about 10% higher and the CU amount is 11% higher. The point is, I think AMD would need to combine the extra 20 CUs with a ~33.3% higher GPU clocks (2233mhz + 33.3%) to see a proportionate increase in performance.
One of the main benefits of RDNA 2 seems to be lower energy consumption. The RX 5700 XT used 45w more power, just for higher clocks and 4 extra CUs vs the RX 5700. The new consoles have significantly lower TDP per CU.
What do you guys think, is this too optimistic, or not optimistic enough?
That's true, but it's still from 'Microsoft’s director of Xbox program management'. Not Just a random Youtube channel. I think consoles will be the priority for AMD with RDNA 2.
He also says they can get the same performance as the Xbox One X (for the Series S GPU, just 4 TFlops), with some RDNA 2 hardware uplift and some software techniques, like variable rate shading.
If only his name was Ronald Mcdonald
Upto 80 CUs for Sienna Cichlid / Navi 21 according to Linux firmware. Kinda wonder if this leak was deliberate, maybe a 'subtle' leak to keep the fans interested.
https://www.tomshardware.com/uk/news/amd-navy-flounder-sienna-cichlid-specifications-leak
"With RDNA 2 we get basically a 25 percent performance uplift over GCN with no work by developers at all"
Link:
https://www.theverge.com/2020/9/17/...xt-gen-gaming-performance-gpu-memory-hardware
Based on (some) evidence:
I think it's safe to assume that a 60 CU RDNA 2 GPU would get a +25% performance improvement, vs GCN GPUs, like the Radeon VII.
If clocked 23.9% higher than the Radeon VII at 2233mhz (PS5 GPU frequency), we would probably get another 12% (at least) of performance (5700 XT performance gains from higher frequencies are about equal to the percentage overclocked, divided by 2. This is based on 3d Mark:Time Spy GPU scores).
So, a minimum of 37% faster than the (GCN based) Radeon VII if RDNA 2 is clocked at 2233mhz, with 60 CUs.
That would put it ahead of the RTX 2080 TI.
Speculation and observations:
An 80 CU RDNA 2 GPU could be upto 33.3% faster than a 60 CU RDNA 2 GPU (similarly, a 90 CU GPU could be upto 50% faster).
So, a maximum of 70.3% increased performance for an 80 CU RDNA 2 GPU, vs the Radeon VII.
Comparing the 5700 to the 5700 XT, the performance is about 12.7% higher in 3D Mark (GPU score), the clocks are about 10% higher and the CU amount is 11% higher. The point is, I think AMD would need to combine the extra 20 CUs with a ~33.3% higher GPU clocks (2233mhz + 33.3%) to see a proportionate increase in performance.
One of the main benefits of RDNA 2 seems to be lower energy consumption. The RX 5700 XT used 45w more power, just for higher clocks and 4 extra CUs vs the RX 5700. The new consoles have significantly lower TDP per CU.
What do you guys think, is this too optimistic, or not optimistic enough?
That's true, but it's still from 'Microsoft’s director of Xbox program management'. Not Just a random Youtube channel. I think consoles will be the priority for AMD with RDNA 2.
He also says they can get the same performance as the Xbox One X (for the Series S GPU, just 4 TFlops), with some RDNA 2 hardware uplift and some software techniques, like variable rate shading.
If only his name was Ronald Mcdonald
Upto 80 CUs for Sienna Cichlid / Navi 21 according to Linux firmware. Kinda wonder if this leak was deliberate, maybe a 'subtle' leak to keep the fans interested.
https://www.tomshardware.com/uk/news/amd-navy-flounder-sienna-cichlid-specifications-leak
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