Slightly different GPU specifications have begun to emerge in recent weeks Navi 31 from AMD than has been discussed so far. The first difference was the combination of a lower number of stream processors (12,288 vs. 15,360) and higher clock frequencies (~ 3GHz instead of ~ 2.5 GHz).
However, according to current information, this is not the only change. The lower number of computational blocks is to bring with it the merging of the originally mentioned two silicones with computational units (GCD) into one. On the other hand, the number of silicon memory (MCD) should be increased from four to six, which would mean a different Infinity Cache capacity (instead of 256-512MB 192-384MB) and in the presence of a memory interface on the MCD also expand the memory bus from 256bit to 384bit .
| original configuration |
current configuration |
performance | |
|---|---|---|---|
| Navi 31 | 15 360 SP 256 / 512 MB ∞$ 256bit 16 / 18GHz GDDR6 |
12 288 SP |
≤2,4 Navi 21 |
| Navi 32 | 10 240 SP 128 / 256 MB ∞$ 192bit 16 / 18GHz GDDR6 |
8192 SP 256 MB ∞$ 256bit 21GHz GDDR6 |
≤1,7 Navi 21 |
| Navi 33 | 5 120 SP 128 MB ∞$ 128bit 16 / 18GHz GDDR6 |
4096 SP 128 MB ∞$ 128bit 21GHZ GDDR6 |
~ Navi 21 |
In this case, it seems likely that a combination of a wider bus and a smaller Infinity Cache will be chosen instead of a narrower bus and a larger Infinity Cache.
GPU Code Name (ASIC) Navi 31 according to leaker Kepler should be Pretty Plum and the code designation of the entire card Gemini. Frankly, the label Gemini (Latin: twins) would be much more suitable for a card whose GPU carries a pair of GCDs, but who knows, for example, this is an indication that the kernel was originally supposed to consist of two GCDs and that there was some truth to the original specifications.
Despite the specification changes, there is a targeted gaming performance of up to 2.5x above the Radeon RX 6900 XT and TDP, which should be in the range of 375 to 450 watts, with the higher part of this range intended for OC models.
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