In the latest Linux Kernel Patch, AMD has confirmed the Infinity Cache sizes of its upcoming RDNA 2 Radeon RX GPUs based on the Navi 23 SKU. The company has also confirmed that neither RDNA 2 powered Van Gogh nor CDNA 2 powered Instinct accelerators will be featuring its Infinity Cache technology.
AMD RDNA 2 Navi 23 GPU Powered Radeon RX GPUs To Feature 32 MB Infinity Cache, A Quarter of Navi 21's Infinity Cache Pool
The information was spotted by Coelacanth-Dream (via Kepler_L2) and confirms cache sizes & GPU configurations of several RDNA 2 and CDNA 2 GPUs. The AMD Infinity Cache was first introduced on the Radeon RX 6000 series graphics cards featuring the RDNA 2 architecture. The Navi 21 SKU, codenamed Big Navi, was the first to get it but it was followed by the Navi 22 SKU recently & now we are also going to get a third SKU in the form of Navi 23.
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AMD RDNA 2 Powered Navi 23 GPU For Radeon RX 6000 Graphics Cards
The patch confirms the Infinity Cache size which is listed as a level-3 cache (L3) for all three RDNA 2 GPUs that will be coming to desktop PCs. The Navi 21 GPU 'Sienna Cichlid' features the biggest size of 128 MB Infinity Cache followed by the Navi 22 GPU 'Navy Flounder' which features 96 MB of L3 or Infinity Cache. The AMD Navi 23 GPU 'Dimgry Cavefish' is going to be the next GPU in the lineup of Radeon RX 6000 series graphics cards and is going to feature 32 MB of Infinity Cache. That's a quarter of the L3 size featured on the Big Navi GPU.
It was previously expected that Navi 23 Radeon RX 6000 GPUs would feature 64 MB of Infinity Cache but that rumor is debunked now. The specifications of the Navi 23 GPU suggest a total of 2048 stream processors & 32 raytracing units inside the GPU package. The GPU will also be packed with 32 MB of Infinity Cache which will help it boost its bandwidth by a huge margin. For memory, we are looking at up to 8 GB GDDR6 capacity that will operate across a 128-bit bus interface and offer pin speeds of up to 16 Gbps. This should bring the total bandwidth to 256 GB/s. The Navi 23 GPU will also be the smallest of the Navi 2X family with a die size reported at around 236mm2.
AMD Radeon RX 6000 Series "RDNA 2" Graphics Card Lineup:
Graphics Card | AMD Radeon RX 6950 XT | AMD Radeon RX 6900 XT | AMD Radeon RX 6800 XT | AMD Radeon RX 6800 | AMD Radeon RX 6750 XT | AMD Radeon RX 6700 XT | AMD Radeon RX 6700 | AMD Radeon RX 6650 XT | AMD Radeon RX 6600 XT | AMD Radeon RX 6600 | AMD Radeon RX 6500 XT | AMD Radeon RX 6400 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
GPU | Navi 21 KXTX | Navi 21 XTX | Navi 21 XT | Navi 21 XL | Navi 22 KXT | Navi 22 XT | Navi 22 XL | Navi 23 KXT | Navi 23 (XT) | Navi 23 (XL) | Navi 24 (XT) | Navi 24 (XL) |
Process Node | 7nm | 7nm | 7nm | 7nm | 7nm | 7nm | 7nm | 7nm | 7nm | 7nm | 6nm | 6nm |
Die Size | 520mm2 | 520mm2 | 520mm2 | 520mm2 | 336mm2 | 336mm2 | 336mm2 | 237mm2 | 237mm2 | 237mm2 | 107mm2 | 107mm2 |
Transistors | 26.8 Billion | 26.8 Billion | 26.8 Billion | 26.8 Billion | 17.2 Billion | 17.2 Billion | 17.2 Billion | 11.06 Billion | 11.06 Billion | 11.06 Billion | 5.4 Billion | 5.4 Billion |
Compute Units | 80 | 80 | 72 | 60 | 40 | 40 | 36 | 32 | 32 | 28 | 16 | 12 |
Stream Processors | 5120 | 5120 | 4608 | 3840 | 2560 | 2560 | 2304 | 2048 | 2048 | 1792 | 1024 | 768 |
TMUs/ROPs | 320 / 128 | 320 / 128 | 288 / 128 | 240 / 96 | 160/64 | 160/64 | 144/64 | 128/64 | 128/64 | 112/64 | 64/32 | 48/32 |
Game Clock | 2116 MHz | 2015 MHz | 2015 MHz | 1815 MHz | 2495 MHz | 2424 MHz | 2330 MHz | 2410 MHz | 2359 MHz | 2044 MHz | 2610 MHz | 2039 MHz |
Boost Clock | 2324 MHz | 2250 MHz | 2250 MHz | 2105 MHz | 2600 MHz | 2581 MHz | 2495 MHz | 2635 MHz | 2589 MHz | 2491 MHz | 2815 MHz | 2321 MHz |
FP32 TFLOPs | 23.80 TFLOPs | 23.04 TFLOPs | 20.74 TFLOPs | 16.17 TFLOPs | 13.31 TFLOPs | 13.21 TFLOPs | 11.50 TFLOPs | 10.79 TFLOPs | 10.6 TFLOPs | 9.0 TFLOPs | 5.7 TFLOPs | 3.5 TFLOPs |
Memory Size | 16 GB GDDR6 +128 MB Infinity Cache | 16 GB GDDR6 +128 MB Infinity Cache | 16 GB GDDR6 +128 MB Infinity Cache | 16 GB GDDR6 +128 MB Infinity Cache | 12 GB GDDR6 + 96 MB Infinity Cache | 12 GB GDDR6 + 96 MB Infinity Cache | 10 GB GDDR5 + 80 MB Infinity Cache | 8 GB GDDR6 + 32 MB Infinity Cache | 8 GB GDDR6 + 32 MB Infinity Cache | 8 GB GDDR6 + 32 MB Infinity Cache | 4 GB / 8 GB GDDR6 + 16 MB Infinity Cache | 4 GB GDDR6 + 16 MB Infinity Cache |
Memory Bus | 256-bit | 256-bit | 256-bit | 256-bit | 192-bit | 192-bit | 160-bit | 128-bit | 128-bit | 128-bit | 64-bit | 64-bit |
Memory Clock | 18 Gbps | 16 Gbps | 16 Gbps | 16 Gbps | 18 Gbps | 16 Gbps | 16 Gbps | 17.5 Gbps | 16 Gbps | 14 Gbps | 18 Gbps | 14 Gbps |
Bandwidth | 576 GB/s | 512 GB/s | 512 GB/s | 512 GB/s | 432 GB/s | 384 GB/s | 320 GB/s | 280 GB/s | 256 GB/s | 224 GB/s | 144 GB/s | 112 GB/s |
TDP | 335W | 300W | 300W | 250W | 250W | 230W | 220W | 176W | 160W | 132W | 107W | 53W |
Price | $1099 US | $999 US | $649 US | $579 US | $549 US | $479 US | TBD | $399 US | $379 US | $329 US | $199 US | $159 US? |