This page will be watchful Tuesday September 6, 2022 to 10:35 be published.
Nvidia does not only seem to be testing two different RTX 4070 variants, on Twitter two configurations of the RTX 4080 are now also mentioned. According to MegaSizeGpu, these models differ based on the amount of video memory, and they also have completely different PCBs. While Nvidia is said to have doubts about the final specifications of the RTX 4070, the Twitterer claims that both configurations of the RTX 4080 will be released at the same time.
On the one hand, there is a 12GB edition with a ten-layer pcb, followed by its bigger brother with 16 GB gddr6x with a twelve-layer pcb. Furthermore, the reference design of the RTX 4090 would have 24 GB of vram on board and offer a pcb of 14 layers. For reference, Nvidia uses up to twelve layers for the most powerful Ampere cards, while top models such as EVGA’s RTX 3090 Ti Kingpin have no fewer than 14 PCB layers.
An alleged RTX 4080 was recently snapped.
Furthermore, MegaSizeGpu claims that the 12GB version uses an AD103 GPU and a 192-bit memory bus. The latter is especially noteworthy, as the RTX 4070 would also combine 12 GB gddr6x with an identical bus width. Lovelace is expected to be equipped with a lot more L2 cache, so it does not seem impossible that a higher segmented card can work well with a narrower bus.
4080 12G GD6X 10layer PCB aic reference design— MEGAsizeGPU (@Zed__Wang) September 5, 2022
4080 16G GD6X 12layer PCB aic
4090 24G GD6X 14layer PCB aic reference design
note：4080 12G has a completely different pcb design from 4080 16G