AMD Radeon RX 7900XT rumored to feature 20GB GDDR6 memory

Published: Oct 21st 2022, 15:21 GMT   Comments

Please note that this post is tagged as a rumor.

AMD RX 7900XT rumored to feature 4GB more memory than RX 6900XT

According to Wccftech sources, Radeon RX 7900XT RDNA3 GPU is said to feature 20GB of VRAM. This is reportedly not the flagship model, though.  

AMD Radeon RX 7900 series are to be announced in less than 2 weeks, which means that board partners should already have all the important information on next-gen AMD GPUs. Wccftech citing their sources confirmed today that RX 7900XT will pack 20GB of memory. This is actually not new information because Navi 31 GPU was expected to feature a 320-bit variant. However, this is the first time a specific GPU model is being mentioned with this memory capacity.

The rumored RX 7900XT would feature 20GB GDDR6 memory of unknown speed along with a 320-bit bus. If for any reason AMD would keep its RDNA2 top 18 Gbps GDDR6 speed, that would give 720 GB/s of bandwidth, 144 GB/s faster than RX 6950XT. And that’s not even including the new Infinity Cache size, which is expected to be at least 96MB on the full chip. And speaking of top SKU, it speculated that RX 7950XT is to feature 24GB of GDDR6 memory with full 384-bit memory bus. This was not confirmed by anyone yet, though.

AMD Navi 3X GPU Family, Source: @Wild_C

The RX 7900 series are believed to feature Navi 31 GPU with up to 12288 Stream Processors. This is AMD’s first consumer chiplet design for the Radeon series, featuring large graphics and memory dies on a single package. The renders posted above are fan-made visualizations by Wild_C based on the most recent leaks. A full Navi 3X (RDNA3) GPU specs were already posted by Angstronomics, who had a stellar track record thus far.

Navi 31Navi 32Navi 33
• gfx1100 (Plum Bonito)
• Chiplet – 1x GCD + 6x MCD (0-hi or 1-hi)
• 48 WGP (96 legacy CUs, 12288 ALUs)
• 6 Shader Engines / 12 Shader Arrays
• Infinity Cache 96MB (0-hi), 192MB (1-hi)
• 384-bit GDDR6
• GCD on TSMC N5, ~308 mm²
• MCD on TSMC N6, ~37.5 mm²
• gfx1101 (Wheat Nas)
• Chiplet – 1x GCD + 4x MCD (0-hi)
• 30 WGP (60 legacy CUs, 7680 ALUs)
• 3 Shader Engines / 6 Shader Arrays
• Infinity Cache 64MB (0-hi)
• 256-bit GDDR6
• GCD on TSMC N5, ~200 mm²
• MCD on TSMC N6, ~37.5 mm²
• gfx1102 (Hotpink Bonefish)
• Monolithic
• 16 WGP (32 legacy CUs, 4096 ALUs)
• 2 Shader Engines / 4 Shader Arrays
• Infinity Cache 32MB
• 128-bit GDDR6
• TSMC N6, ~203 mm²

Alleged final Navi 3X GPU specifications, Source: Angstronomics

Recently, power supply maker Enermax listed as many as four RX 7000 models along with estimated power consumption for each model. This information has already been removed from the website, so it is not clear if it was inaccurate or AMD simply ‘requested’ that this information should not be made public just yet.

AMD confirmed yesterday they will have a livestreamed event dedicated to RDNA3 GPUs on November 3rd. Some board partners even confirm that they are ‘ready’, which probably implies that custom cards are ready as well.

Rumored AMD Radeon RDNA Series
VideoCardz.comGPUStream ProcessorsMemoryMemory SpeedTBPMSRP
AMD Radeon RX 7000 Series
RX 7950XT5nm Navi 31
24GB G6 384b
RX 7900XT5nm Navi 31
20GB G6 320b
AMD Radeon RX 6000 Series
RX 6950 XT7nm Navi 21 KXTX
16GB G6 256b
18 Gbps
1099 USD
RX 6900 XT7nm Navi 21 XTX
16GB G6 256b
16 Gbps
999 USD
RX 6800 XT7nm Navi 21 XT
16GB G6 256b
16 Gbps
649 USD
RX 68007nm Navi 21 XL
16GB G6 256b
16 Gbps
579 USD
RX 6750 XT7nm Navi 22 XT
12GB G6 192b
18 Gbps
549 USD
RX 6700 XT7nm Navi 22 XT
12GB G6 192b
16 Gbps
479 USD

Source: Wccftech

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