A new list of AMD Navi 31, 32 and 33 GPU variants has been leaked by several sources, indicating that AMD is reducing the specifications for the next next generation of Radeon graphics cards. Please note that although this information is anything but confirmed – and almost certainly a rumor with all the included reservations – they come from sources that have been fairly reliable in the past.
AMD seems to have reduced the specifications for upcoming, game-changing, MCM-based RDNA3 next-generation 7000-series Radeon GPUs a bit
Navi 31 was released almost 5 months ago and was recently seen in developer change logs, indicating that it’s time for a launch later this year. It will be AMD’s first GPU built on the MCM philosophy (yes the same philosophy that made Zen such a trump card) and will be an undisputed game-changer for the GPU industry. Before we move on, here’s the list of SKUs that were leaked by Kepler (a source that has previously proven to be quite reliable:
N31 XTX 48WGP / 96 CU / 12288FP32
N31 XT 42WGP / 84CU / 10752FP32
N31 XL 36WGP / 72CU / 9216FP32
N32 XTX 32WGP / 64CU / 8192FP32
N32 XT 28WGP / 56CU / 7168FP32
N32 XL 24WGP / 48CU / 6144FP32
N33 XT 16WGP / 32CU / 4096FP32
N33 XL 14WGP / 28CU / 3584FP32 https://t.co/EpvnevuCOu
– Kepler (@ Kepler_L2) May 2, 2022
More information on this was also sent by Greymon55 (via Videocardz):
AMD Navi III (RDNA 3)
Navi 31: 12288 SPs, 48 WGPs, 12 SAs, 6 SEs
Navi 32: 8192 SPs, 32 WGPs, 8 SAs, 4 SEs
Navi 33: 4096 SPs, 16 WGPs, 4 SAs, 2 SEs https://t.co/h46ytpdifo
– Redfire (@ Redfire75369) May 2, 2022
As we can see, the top AMD Navi 31 MCM GPU has been reduced from 60 RDNA Workgroups to 48, with the CUs reduced from 120 to 96. What this basically means is that Radeon RX 7900 XT (or whatever AMD now ends up calling it), has had its specifications cut down from 15360 to 12288 stream processors. There can be several reasons for this, but the most likely is yield. The more you reduce the final specifications of the product, the fewer dies you have to throw out (bucket) for the sake of yield.
Similarly, the Navi 32 has been cut down from 40 Radeon Workgroups to 32, and CUs are being cut down from 80 to 64. This brings the stream processors down from 10240 to 8192. This GPU will be shown in the coming Radeon RX 7700 XT GPU (or whatever AMD now decides to call it).
Last but not least, AMD’s Navi 33 GPU – which is not actually an MCM GPU – has been cut from 20 Radeon Workgroups to 16, and CUs have been reduced from 40 to 32. That brings the stream processors down to 4096 – which is AMD’s favorite number for mainstream GPUs for a while now. This will be displayed in Radeon RX 7600 XT The GPU series (or whatever AMD now decides to call it.)
Here is a possible segmentation list (read: speculation) of the Navi 30 series dies by Kepler:
Possible segmentation (🧂🧂🧂 * SPECULATION WARNING * 🧂🧂🧂):
N31 XTX = 7970XT
N31 XT = 7950XT
N31 XL = 7900XT
N32 XTX = 7800XT
N32 XT = 7800
N32 XL = 7700XT
N33 XT = 7600XT
N33 XL = 7600
– Kepler (@ Kepler_L2) May 2, 2022
So here’s the thing. AMD’s RDNA3 series will be a game changer and probably the first on the market with an MCM design. We have been told to expect performance figures of up to 92 TFLOPS. Assuming a 3GHz clock rate, however, the Navi 31 flagship will emit around 73 TFLOPs with single-precision calculation. If we assume that the number of 92 TFLOPs is correct, then the card must clock at close to 3.74 GHz – which is absolutely wild for a GPU.
Incidentally, performance targets remain the same and may even be higher.
– Greymon55 (@ greymon55) May 2, 2022
Greymon55 said he expects performance targets to remain the same and “may even be higher”, so we will not reach any conclusions until things get clearer. Meanwhile, it is rumored that NVIDIA’s upcoming ADA Lovelace GPU is about to be ready to release 100 TFLOPs of power, so there is definitely a GPU war underway.