NVIDIA’s GeForce RTX 3080 Ti GPU, Ampere GA102-250, detected on a GeForce RTX 3090 graphics card


A user on the Hardwareluxx forums has confirmed the existence of the NVIDIA Ampere GA102-250 GPU SKU, which was previously expected to appear on the GeForce RTX 3080 Ti graphics card. It was seen when the forum member disassembled his GeForce RTX 3090, only to reveal that the GPU had initially been labeled GA102-250 SKU instead of GA102-300, which is the official SKU used in the RTX 3090.

NVIDIA’s GeForce RTX 3080 Ti GPU, Ampere GA102-250, detected on a GeForce RTX 3090 graphics card

The NVIDIA GA102-250-KD-A1 GPU only existed at the rumor mill, but now we can confirm that it is a real chip. Initially planned for the GeForce RTX 3080 Ti graphics card, it seems that NVIDIA decided that they could use a smaller SKU to power the next flagship, while this SKU can be used for the GeForce RTX 3090 graphics card. You can clearly see that the label The GA102-250-KD-A1 GPU has been cut and instead reused as the GA102-300-A1 SKU. Interestingly, the GA102-250-KD-A1 was expected to feature 78 SM-enabled drives for a total of 9,984 CUDA cores, while the RTX 3090 with its GA102-300-A1 GPU includes 82 SM or 10,496 cores.

NVIDIA GeForce RTX 3050 features Ampere GA107 GPU with 2048 CUDA cores, ray tracing is coming to budget gaming laptops soon

NVIDIA may have decided to reuse SKU GA102-250 on GA102-300 given the shortage of its high-end graphics cards. We can’t say for sure if the 250 variant offers the same performance / power limits as the 300 variant, but since it has a lower naming scheme, one might expect it to be a lower container than the standard GA102-300 SKU. The GPU was also manufactured during week 49 of 2020, which is between late November and early December. Again, we don’t know to what extent NVIDIA is repurposing its GA102-250 to GA102-300 chips, but since they exist and this is already available, we can expect more users to find out for themselves.

NVIDIA’s GeForce RTX 3090 has been spotted using the GA102-250 GPU, the SKU that was once rumored for the RTX 3080 Ti. (Image credits: HardwareLuxx)

The NVIDIA GeForce RTX 3080 Ti, on the other hand, has undergone a specification change and will now use the Ampere GA102-225-A1 GPU SKU. Below are the expected specs of the upcoming RTX 30 series flagship.

NVIDIA GeForce RTX 3080 Ti 12GB ‘Rumored’ Graphics Card Specifications

NVIDIA’s GeForce RTX 3080 Ti 12GB FE (Founders Edition) graphics card is expected to feature the PG132-SKU18 PCB layout and GA102-225-KD-A1 graphics core. The GA102-225 GPU has also changed since we last saw it and will now feature 10,240 CUDA cores within a total of 80 SM drives. Since the main kernel configuration is completely new, the previously leaked TMU / ROP clocks and counts should now be discarded.

NVIDIA GeForce RTX 3080 Ti 12GB Graphics Card for Gaming Enthusiasts Reportedly Delayed to May

In terms of memory, the card will feature 12GB of GDDR6X memory. Unlike the 19.5 Gbps speeds of the RTX 3090, the GeForce RTX 3080 Ti is said to retain the same memory speeds as the RTX 3080 at 19 Gbps. Given that we get 12GB of memory, the NVIDIA GeForce RTX 3080 Ti will use a 384-bit bus interface which equates to a total bandwidth of 912GB / s. So even though we see an 8GB VRAM reduction over the previous spec, the larger bus interface should lead to higher memory bandwidth.

The TGP of the card is set to be the same as the RTX 3080 at 320 Watts. That’s definitely necessary to power the extra cores, so NVIDIA might have to tune the clocks a bit here. The NVIDIA GeForce RTX 3080 Ti is expected to launch in mid-April for an MSRP of around $ 999 US. The card is rumored to be released in May.

NVIDIA GeForce RTX 30 Series ‘Ampere’ Graphics Card Specifications:

Graphics card name NVIDIA GeForce RTX 3050 NVIDIA GeForce RTX 3050 Ti NVIDIA GeForce RTX 3060 NVIDIA GeForce RTX 3060 Ti NVIDIA GeForce RTX 3070 NVIDIA GeForce RTX 3070 Ti? NVIDIA GeForce RTX 3080 NVIDIA GeForce RTX 3080 Ti? NVIDIA GeForce RTX 3090
GPU name GA107 Ampere GA106 amp? GA106-300 Amp GA104-200 Amp GA104-300 Amp GA104-400 Amp GA102-200 Amp GA102-225 Ampere? GA102-300 Amp
Process node Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm Samsung 8nm
Matrix size TBA TBA TBA 395.2 mm2 395.2 mm2 395.2 mm2 628.4 mm2 628.4 mm2 628.4 mm2
Transistors TBA TBA TBA 17.4 billion 17.4 billion 17.4 billion 28 billion 28 billion 28 billion
CUDA cores 2304? 3584? 3584 4864 5888 6144? 8704 10240? 10496
TMU / ROP TBA TBA 112/64 152/80 184/96 192/104? 272/96 320/112? 328/112
Tensor / RT Cores TBA TBA 112/28 152/38 184/46 192/48? 272/68 320/76? 328/82
Base clock TBA TBA 1320 MHz 1410 MHz 1500 MHz TBA 1440 MHz TBA 1400 MHz
Boost the clock TBA TBA 1780 MHz 1665 MHz 1730 MHz TBA 1710 MHz TBA 1700 MHz
FP32 Compute TBA TBA 12.7 TFLOP 16.2 TFLOP 20 TFLOP TBA 30 TFLOP TBA 36 TFLOP
RT TFLOP TBA TBA 25.4 TFLOP 32.4 TFLOP 40 TFLOP TBA 58 TFLOP TBA 69 TFLOP
Tensioner-TOPs TBA TBA 101 TOP 129.6 TOP 163 TOP TBA 238 TOP TBA 285 TOP
Memory capacity 4 GB GDDR6? 6GB GDDR6? 12GB GDDR6 8GB GDDR6 8GB GDDR6 8GB GDDR6X 10GB GDDR6X 12GB GDDR6X 24GB GDDR6X
Memory bus 128 bit 192 bits? 192 bits 256 bits 256 bits 256 bits 320 bits 384 bits 384 bits
Memory speed TBA TBA 15 Gbps 14 Gbps 14 Gbps TBA 19 Gbps 19 Gbps 19.5 Gbps
Broadband TBA TBA 360 Gbps 448 Gbps 448 Gbps TBA 760 Gbps 912 Gbps 936 Gbps
TGP 90W? TBA 170W 200W 220W 250W? 320W 320W 350W
Price (MSRP / FE) $ 149? $ 199? $ 329 399 US dollars 499 US dollars 599 US dollars? 699 US dollars US $ 999? $ 1499 dollars
Launch (availability) 2021? 2021? February 2021 December 2020 October 29th May 2021? September, 17th April 2021? 24th September



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