RX 6990 XT (RDNA 2 or RX 6000-Series) specifications leaked while reversing an alpha version of an AMD adrenalin driver that was actually supposed to be private. I will not tell the source of the private unreleased driver/not going to share any method on how to access unreleased ones in general.
The naming scheme is going to be a little different than what people initially thought.
There will definitely be the RX 6660 XT, RX 6880 XT and the RX 6990 XT (No RX 6770 XT apparently, perhaps they are leaving that out for later? It may be around 16-18 TFLOPS so between a RX 6660 XT and a RX 6880 XT).
Note that there is now an infinity cache to make up for that lack of GDDR6X memory, which according to the details I have looked at, should even make it performing better than GDDR6X, of course if AMD was able to provide both, it might have outperformed NVIDIA's cards in terms of internal memory speeds and the delivery of data like textures.
Also note that RDNA 2 is based on 7nm unlike RDNA 3 which's process is going to be 5nm.
I am going to share specifications of each GPU (bus width of every card is unknown and only assumable and the cards may be subject to change but this is definitely the information I could extract from the unreleased driver).
Raytracing is available on all cards the cards leaked below:
[RX 6660 XT]
- 48 CUs
- 3072 stream processors
- 64 ROPs
- 1905 MHz boost clock
- 8 GB GDDR6 @ 448 GB/s
- 64 MB infinity cache
- TDP: unknown (assumably ~180W)
- ~12 TFLOPS (roughly the raw performance of the Xbox Series X GPU)
[RX 6880 XT]
- 80 CUs
- 5120 stream processors
- 96 ROPs
- 2000 MHz boost clock
- 12 GB GDDR6 @ 512.0 GB/s
- 128 MB infinity cache
- TDP: unknown (assumably ~300W)
- ~20 TFLOPS
[RX 6990 XT]
- 80 CUs
- 5120 stream processors
- 96 ROPs
- 2145 MHz boost clock
- 16 GB GDDR6 @ 720.0 GB/s
- 128 MB infinity cache
- TDP: unknown (assumably ~350W)
- ~22 TFLOPS
As it looks like, the TFLOPS are mostly lower than the RTX 3080's raw performance. Though the RX 6880 XT should beat the RTX 3070, these values may still change but so far AMD's first generation of cards that support raytracing will indeed be better (and most likely cheaper) than the first generation NVIDIA cards (RTX 2000-Series). The boost clocks are indeed as high as stated and were taken directly from the information of the unreleased adrenalin driver.
Note that they may still be subject to change but so far there is not that much time left for the cards specs' to change so these are most likely going to be identical once AMD launches them.
Submitted by AMDInsider | #Specialdealer Special Offer Online Shopping Store 2016
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