The RTX 3090 / 3080 / 3070 series video card released yesterday not only greatly improves the performance, but also supports pci4.0, which theoretically doubles the bandwidth of pci3.0 interface.
RTX 30 series is not the first time NVIDIA supports PCIe 4.0. In fact, they support the latest standard more actively than AMD,PCI 4.0 has been installed on Volta architecture as early as possible, because it has to cooperate with IBM's power 9 processor.
In the consumer market, a few days before the release of RTX 30 series graphics cards,NVIDIA's geforce mx450 graphics card is also available in pci4.0, this is NVIDIA's first consumer grade PCI 4.0 graphics card.
The problem now is that the support of consumer grade pci4.0 is limited. Intel has just supported pci4.0 on the 11th generation core and tiger lake, but this is for mobile platforms,Not on the desktop market.
AMD, on the other hand, has cut off pci4.0,The desktop platform only supports PCIe 4.0 from last year's x570 to this year's b550.
The problem is that on the one hand, only a few high-end platforms can be used on AMD platforms. On the other hand, Intel processors are the mainstream. It is not easy to make good use of PCI 4.0 for NVIDIA's RTX 30 series graphics cards.
As for the current situation, NVIDIA staff explained,At present, we don't have to worry about the gap between pci4.0 and pci3.0, and the performance will only have a few percentage points difference, which has little impact.
In the current environment, the performance impact of choosing CPU processor is greater than that of pci4.0 / 3.0.
Of course, NVIDIA also hopes to have more platforms to support pci4.0 and release the power of pci4.0 graphics card as much as possible.