Comment by CPR_Dummy on 30/11/2020 at 18:25 UTC*

2 upvotes, 1 direct replies (showing 1)

View submission: Simple Questions - November 30, 2020

Okay, can anyone explain PCIe lanes to me? I'm looking at this graphic[1] and I'm a bit confused. From what I understand, I get 24 PCIe lanes from my CPU right? 16 of those would go to my GPU and 4 will be going to my NVME drive on my primary m.2 slot, the other 4 will go to the chipset? Where are the 10 flexible lanes coming from? Can I use those as well in addition to the 4 extra from the CPU? SATA ports take up 4 lanes as well?

1: https://www.gamersnexus.net/images/media/2020/amd-chipsets-b550/amd-b550-chipset-block-diagram.png

Sorry for the wall of questions, but I just want to make sure I have this right

Replies

Comment by MagorTuga at 30/11/2020 at 18:44 UTC

3 upvotes, 1 direct replies

Short answer: It doesn't matter to average users.

All you need to know is that is that you get PCIe Gen 4 for NVMe SSDs and you support all new high end graphics cards, so long as you have a power supply with enouh juice and cables for them.

What exactly do you intend to do that you'll "use those as well"?