Need Help Deciding on PCI-E Setup for New PC Build

August 30, 2025 2 answers
Asked by GamerGuy123
I'm about to build a new PC and I'm a bit confused about the best PCI-E setup. I'm considering an Intel i9 processor with a 790 chipset, but I noticed that the CPU has a limit of 16 PCI-E lanes. Here are my options: 1. Install an M.2 SSD using PCI-E 4.0 along with a 5070 Ti GPU utilizing all 16 lanes. 2. Use the M.2 SSD at PCI-E 5, but that would limit the 5070 Ti GPU to 8 lanes. 3. Go with the M.2 SSD on PCI-E 5 and pair it with a 5060 Ti GPU which already runs on 8 lanes. I'd appreciate any insights on which option is the most sensible. Thanks!

Answers

ElderBuilder22
Why are you looking at such an ancient motherboard for a new GPU? You should really consider getting a current-gen X870E AM5 motherboard to avoid any lane issues. If you have a specific reason for sticking with Intel, it'd be great to know more about your use case!

GamerGuy123: I've been using Intel boards for years, so switching to AMD hasn't really crossed my mind. I'm not really facing any lane issues; I'm just trying to find the best setup overall. I did check AMD options, and the prices seem comparable.

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TechieTom88
A Gen 5.0 drive might not provide you any noticeable benefits over a Gen 4.0 or Gen 3.0 drive. If you're concerned about lane usage, you could also place the M.2 drive in a different slot, which would essentially allow you to run it at Gen 4 without issues. That's something to consider!
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