GeForce RTX 3080 Ti GA102-250 GPU revealed

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Our community member isoO has bought a GeForce RTX 3090 in the Founders Edition and converted it to water cooling. Astonishing things came to light. The laser engraving on the GPU was initially GA102-250-KD-A1 – just like on the GeForce RTX 3080 Ti, which has already been rumored several times, or at least exactly as was suspected in October of last year. The GeForce RTX 3080 Ti is now said to be based on the GA102-225 GPU. The specifications have changed in the meantime.

However, the engraving on the chip has been changed again to GA102-300-A1, as is to be expected for a GeForce RTX 3090. The GPU-Z screenshot then shows a GeForce RTX 3090 as expected, but anything else would have been really surprising.

GA102-250-GPU




GA102-250-GPU




Now it would be interesting to know why the engraving was originally GA102-250-KD-A1 and was changed to GA102-300-A1. This would mean an “upgrade”, which would actually be rather unusual, because possibly partially defective chips are rather reused for smaller models. In any case, the GPU was manufactured in the 49th week of last year, which began on November 30, 2020.

Comparison of the GPUs
commitment SMs Memory interface
GA102-300 GeForce RTX 3090 82 384 Bit
GA102-225 * GeForce RTX 3080 Ti (Q1 2021) 80 384 Bit
GA102-250-KD-A1 GeForce RTX 3080 Ti (Q4 2020) 78 384 Bit
GA102-200-KD-A1 GeForce RTX 3080 68 320 Bit

* according to the latest rumors

The GA102-300 GPU with its 82 SMs is used on the GeForce RTX 3090. According to the latest rumors, the GeForce RTX 3080 Ti now uses the GA102-225 GPU with 80 SMs, while at the end of 2020 there was talk of the GA102-250-KD-A1 GPU with 78 SMs for the GeForce RTX 3080 Ti. For comparison, the GeForce RTX 3080 with the GA102-200-KD-A1-GPU and 68 SMs as well as the only 320-bit wide memory interface.

There have been several rumors about the GeForce RTX 3080 Ti in the past few weeks. A publication in April was initially suspected. The latest reports point more towards May. A GeForce RTX 3070 Ti will also be available in the coming weeks.

Comparison of the cards
RTX 3090 RTX 3080 Ti RTX 3080
GPU GA102 GA102 GA102
Transistors 28 billion 28 billion 28 billion
production 8 nm 8 nm 8 nm
Chip size 628,4 mm² 628,4 mm² 628,4 mm²
FP32-ALUs 10.496 10.240 8.704
INT32-ALUs 5.248 5.120 4.352
SMs 82 80 68
Colors Tensor 328 320 272
RT Cores 82 80 68
Basic-Stroke 1.400 MHz 1.440 MHz
Boost Rate 1.700 MHz 1.665 MHz 1.710 MHz
Storage capacity 24 GB 12 GB 10 GB
Storage type GDDR6X GDDR6X GDDR6X
Memory interface 384 Bit 384 Bit 320 Bit
Memory bandwidth 936 GB/s 760 GB/s
TDP 350 W 320 W
price 1.499 Euro 699 Euro

The second fastest amp model should have 10,240 FP32 processing units and, just like the GeForce RTX 3090, use a 384-bit wide memory interface, so that NVIDIA could use 12 GB of graphics memory here – 2 GB more than the GeForce RTX 3080 That doesn’t satisfy everyone either, but the 24 GB of the GeForce RTX 3090 are probably out of reach for such a card. Based on the previously assumed expansion stage with 80 SMs, the GeForce RTX 3080 Ti would come very close to the GeForce RTX 3090. The mentioned memory expansion would be a big difference. There are also many inconsistencies with the GeForce RTX 3080 Ti, and not just for the expected release date in May.

Finally, thanks again to isoO, who provided us with the pictures on his card so that we could create this message in the first place.





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https://www.hardwareluxx.de/index.php/news/hardware/grafikkarten/55800-ga102-250-gpu-der-geforce-rtx-3080-ti-aufgetaucht.html

GeForce RTX GA102250 GPU revealed

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