Which 8 core CPU better suits my PCIe Lanes needs?

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OddSalt3G

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Apr 9, 2017
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Hello,

I'm wanting to get started on a new build for a while. The problem is that I'm not sure in what 8 core processor to invest between Intel's 7820x or Ryzen 1700x or even 1900x. My budget can go around those values.

Besides wanting to use at least one NVMe, the thing is that I want to stream, so I may want to invest in one or two video cards, besides that I'm not really sure if I'm going to buy another GTX 1080ti for SLI (because no game supports it, nor even the so called triple A companies).

Ryzen 7 sounds good and cheap for all those cores.

Intel's new 7820x should be better in overall tho, specially for gaming and has 28 PCIe lanes vs Ryzen 7 20 (it's a lie that ryzen has 24 lanes, because 4 are used for the chipset).

And TR 1900x also sounds nice because of all of those PCIe lanes. But is it even worth? It's still slower than 7820x for gaming.

I'm a newbie into streaming, but I would like to render some videos for youtube.

Help me out fam, please ;)

P.S. Sorry about my engrish!!

 
Solution
Rogue Leader
The number of PCIe Lanes doesn't matter for you. If you run 1 GPU it will use 16 PCIe lanes. Ryzen has an additional 4 for a NVME drive. Should you decide to run 2 GPUs a 28 lane CPU isn't going to help you, you're still only going to get 16 lanes to 1 and 8 lanes to 2. You'd need a 40 lane CPU to give you 32 GPU lanes to run both at x16, but honestly the cost/benefit of that is really really low.

For either board you can run additional PCIe devices off the motherboard's PCH, so you can connect a video capture card for streaming.

There really is no reason to run a secondary video card, for your use case. If you did, either processor would work the same. x16 for one or x8/x8 for two.
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Rogue Leader

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The number of PCIe Lanes doesn't matter for you. If you run 1 GPU it will use 16 PCIe lanes. Ryzen has an additional 4 for a NVME drive. Should you decide to run 2 GPUs a 28 lane CPU isn't going to help you, you're still only going to get 16 lanes to 1 and 8 lanes to 2. You'd need a 40 lane CPU to give you 32 GPU lanes to run both at x16, but honestly the cost/benefit of that is really really low.

For either board you can run additional PCIe devices off the motherboard's PCH, so you can connect a video capture card for streaming.

There really is no reason to run a secondary video card, for your use case. If you did, either processor would work the same. x16 for one or x8/x8 for two.
 
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Solution
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OddSalt3G

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Apr 9, 2017
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What do you mean when you say I can run extra PCIe devices off the motherboard PCH? USB connections? If that's the case there's always the latency issue.

 
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Rogue Leader

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The other PCIe slots on the board run off the motherboard's PCIe lanes. Only the GPU slots and M.2 slots run off the CPU's PCIe lanes.

Latency? Yeah maybe in a benchmark, but nothing that would cause you any issue in real life.

I'm not understanding your concern here. You'll be running one GPU, and you can run a capture card off one of the PCIe 2.0 slots with no issue.
 
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OddSalt3G

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Apr 9, 2017
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Ok, I think I'm understanding now, the chipset is capable to handle the capture card, so no need to worry. Thank you :)
 
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