Caporegime
- Joined
- 9 Nov 2009
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Yes. 20 PCIe 4.0 lanes from CPU and x16 for GPU and x4 for Gen4 NVME if you have it set up like that.
Yes but we're onto the chipset lanes now. 12 for B560, 20 for H570. However, if you look at a H570 like the ASRock Steel legend it still only has one M.2 slot at PCIe 4.0. Asus TUF Gaming PRO the same, just the one Gen4 M.2 slot. So you don't get more PCIe 4.0 M.2 functionality with H570 as these require CPU lanes not chipset, as far as I know.
The extra chipset lanes on H570 could prove useful in terms of not making PCIe slots for expansion cards redundant if too many M.2 slots are occupied, for example. But the latter is just a guess as I haven't looked into that specifically on H570 to see how board vendors are employing the extra chipset lanes.
Its a bit weird as some B560 motherboards don't list PCI-E 4.0 NVME SSD compatibility:
https://www.asrock.com/MB/Intel/B560 Pro4/index.asp#Specification
The H570 version does:
https://www.asrock.com/MB/Intel/H570M Pro4/index.asp
So it does seem with the B560 you need to check if the manufacturer has enabled support!
https://www.anandtech.com/show/1651...ard-overview-30-budget-models-for-rocket-lake
There are 12 pcie3 lanes on the chipset and 20 pcie4 from the cpu, confusing.
Intel and confusing - never!