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Newly Uncovered AMD Radeon RX 6000 Specs Imply Significant Performance Uplift

Newly Uncovered AMD Radeon RX 6000 Specs Imply Significant Performance Uplift

Nvidia’s GeForce RTX 30-series are the reigning champs on our best graphics cards standings, but they might not be there for long. A Redditor has discovered the potential specifications for the Radeon RX 6000 series in Apple’s macOS Big Sur 11 beta, and they look promising.

The Redditor has a good track record with leaks, but we should still exercise caution with the specifications. For starters, Apple is fond of using AMD’s Radeon Pro graphics cards in its products, so the specifications may be for those specific SKUs. On the other hand, the mainstream versions will likely arrive with higher clock speeds.

To start things off, Navi 21 (Sienna Cichlid) appears to have 80 Compute Units or 5,120 Stream Processors (SPs), assuming that each CU still carries 64 SPs on RDNA 2. According to the chip detective, there were mentions of two different dies: The Navi21A silicon showed a boost clock up to 2,050 MHz, while the Navi 21B silicon surfaced with a 2,200 MHz boost clock. The power limit varies from 220W to 238W.

There is more to a graphics card than just single-precision (FP32) performance, and that value alone doesn’t dictate gaming performance. Just for comparison, the GeForce RTX 3080 offers a peak single-precision performance of 29.8 TFLOPs.

In comparison, the single-precision performance for Navi 21 comes out to 22.5 TFLOPs. So far, the GeForce RTX 3080 seemingly has 32.4% higher single-precision performance than Navi 21. However, Navi 21 does pull a win over the GeForce RTX 3070, which is good for 20.4 TFLOPs.

AMD’s RDNA 1 architecture delivered a 50% performance uplift over the prior Graphics Core Next (GCN) architecture that survived for so long and still going strong. The chipmaker has promised that we would see the same level of advancement with RDNA 2.

SiliconCodenameCompute UnitsStream ProcessorsClock Speed (MHz)Single-Precision Performance (TFLOPs)Power Limit (W)
Navi 31?805,120???
Navi 21Sienna Cichlid805,1202,050 – 2,20021 – 22.5200 – 238
Navi 22Navy Flounder402,5602,50012.8170
Navi 10 (Radeon RX 5700 XT)?402,5601,9059.8225
Navi 23Dimgrey Cavefish322,408???
Navi 14 ( Radeon RX 5500 XT)?221,4081,8455.2130

Navi 22 (Navy Flounder) might arrive with 40 CUs, amounting to a total of 2,560 SPs. For the observant, that’s the same number of CUs as found on Navi 10. It’s safe to assume that Navi 22 is the direct successor to Navi 10. However, Navi 22 looks more impressive with its boost clock at 2,500 MHz within a 170W power limit.

The Radeon RX 5700 XT, based on Navi 10, comes equipped with 2,560 SPs with a boost clock of 1,905 MHz. The graphics card has a maximum single-precision performance of 9.8 TFLOPs. Navi 22 delivers 12.8 TFLOPs of FP32 shader performance, so we’re looking at a 30.6% improvement. That’s not to mention within a lower power requirement, remembering that the Radeon RX 5700 XT is rated for 225W.

source : https://www.tomshardware.com/news/newly-uncovered-amd-radeon-rx-6000-specs-imply-significant-performance-uplift

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