RTX 4090 PCB is very similar to RTX 3090 Ti
We have an official photo of the RTX 4090 Ti board design.
Up to 28 phases can be added to the AD102 Founder Edition PCB, but only 23 are installed on the RTX 4090 graphics card. This means that NVIDIA could still use this board layout for even more powerful GPUs, such as the rumored GeForce RTX 4090 Ti.
Overall, the design of PG136D (board number of 4090 PCB) is almost identical to RTX 3090 Ti Founders Edition (PG136). As you can see, NVIDIA even uses the same board number, although the layout has changed. For starters, the power input section has been modified and larger chokes have been added. Another notable change is a missing NVLink connector, as the RTX 40 series no longer supports multi-GPU hardware configurations via SLI technology.
As for the GPU itself, we can now do a side-by-side comparison of Ada and Ampere GPUs, considered the flagship processors for each generation of GeForce RTX series. Lovelace processor built using 4nm process technology has 18432 CUDA cores and 2.7 times the transistors compared to 8nm GA102. Despite those upgrades, the GPU is actually 20mm² smaller.
The RTX 4090 will be officially launched on October 12. More details will be shared tomorrow with the first independent reviews featuring NVIDIA’s own Founders Edition.
NVIDIA Flagship Gaming GPUsVideoCardz.comAD102GA102TU102GV100GP102Launch Year20222020201820172017ArchitectureAda LovelaceAmpereTuringVoltaPascalNodeTSMC 4NSAMSUNG 8NTSMC 12nmTSMC 12nmTSMC 16nmDie Size608mm²628mm²754mm²1. Density125.5M TRAN/mm245.1M TRAN/mm224.7M TRAN/mm225.9M TRAN/mm225.5M TRAN/mm2CUDA cores1843210752460851203840Tensor cores576 Gen4336 Gen3576 Gen2640–RT cores144 Gen384 Gen272 Gen1–DR6X 304-bitGDDR6X 384-bitGDDR6X 384-bit