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Nvidia RTX 4070 10GB graphics card prototype exposed, using 160-bit video memory and AD104 GPU

2024-07-16

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IT Home reported on July 16 that although the RTX 4070 currently on sale has 12GB GDDR6X video memory and a 192-bit interface, NVIDIA had previously developed a model with only 10GB of video memory, which had weaker performance.

Xianyu user @GOUYII has now shared a set of GPU-Z screenshots and real photos of the RTX 4070 10GB prototype card, giving us the opportunity to see the original appearance of this abandoned solution.


GPU-Z shows that this graphics card uses the AD104-275 GPU, in which the six 32-bit memory controllers on the AD104 chip are disabled, so only the 160-bit bit width is retained, plus five 2GB GDDR6X video memory chips with a total capacity of 10GB (18 Gbps).

As a result, the bandwidth and capacity of this graphics card are severely limited, with a bandwidth of only 420 GB/s, which is 16.7% lower than the existing RTX 4070 (IT Home Note: launched in April 2023).


Relatively speaking, this 10GB prototype card offers more CUDA cores to make up for the lack of VRAM and bandwidth. GPU-Z shows that it has 7168 CUDA cores, which is 1280 more than the regular RTX 4070 and exactly the same number as the later launched RTX 4070 Super.

In addition, there are eight memory soldering locations on the PCB board of this prototype card, which indicates that NVIDIA may have introduced a reference design of the AD103 (RTX 4080) board for it at that time.