PCIe 5.0 debuted in Intel’s 12th-generation CPU and motherboard lineup, and AMD will add support to its Zen 4 platform later this year. It is widely believed that the next generation of graphics cards will support PCIe 5.0, but new rumors suggest that Nvidia’s next-generation Ada GPUs will not support the new standard.
Rumors come from reliable kopite7kimi (pass video card). That’s a bit surprising, given that Nvidia’s enterprise-oriented Hopper architecture does support PCIe 5.0. There is also the fact that the RTX 40 will support a 12+4 pin 12VHPWR PCIe 5.0 power connector. However, the same goes for the RTX 3090 Ti, and it certainly doesn’t support PCIe 5.0.
If Nvidia does decide to stick with PCIe 4.0, it’s unlikely to have any impact. It’s more of a box to check the value of marketing. Current high-end GPUs run on 16x PCIe 3.0 vs. 4.0 systems with little loss, so the difference will be smaller compared to PCIe 4.0 vs. 5.0.
If Nvidia did omit PCIe 5.0 support, it could save a precious few watts. It is believed that the RTX 40 cards will consume more power than ever before, so any savings that can be made means a few extra watts to budget elsewhere.
Of course, this is just a rumor. Nvidia is known to be tight-lipped about details of unannounced products. Interestingly, the rumours are mounting, suggesting these cards aren’t that far from launch.
It is believed that these cards have entered the beta stage, which means that the GPU itself has completed their design stage. There is now a balance between yield and die harvesting, clock speed, power requirements and PCB design.
The RTX 40 cards are expected to be built using TSMC’s 4N node, which has been tuned for Nvidia. RTX 40 cards will have a massive increase in core count and cache size.
We can expect the RTX 40 series to be released in the second half of 2022. They will go head-to-head with AMD’s MCM RDNA3 models around the same time.