PCI lanes

[dspencer]

How many PCIe lanes per card do you usually need?

[Vann]

Any motherboard with PCI-E slots v1.1 or newer would work. With PCI-E slots smaller than a x16 slot you need to use risers, preferably powered risers. Also older motherboards with PCI slots are NOT compatible with PCI-E cards or risers.

[dspencer]

Any motherboard with PCI-E slots v1.1 or newer would work. With PCI-E slots smaller than a x16 slot you need to use risers, preferably powered risers. Also older motherboards with PCI slots are NOT compatible with PCI-E cards or risers.

First of all, pci-e not pci, my bad.
I have a processor that only supports 20 pcie lanes. That means if i had to install 2 GPUs, I'd have to run them both on x8. What I'm curious about is is the performance throttle bearable enough for me not to notice it?

[Vann]

That's not how GPU mining works. Mining only uses a very small amount of the slot bandwidth, which is why you can use x1 risers with a x16 PCI-E card without a noticeable loss of hash rate. As long as the motherboard has PCI-E slots, with two cards it would work.

[dspencer]

That's not how GPU mining works. Mining only uses a very small amount of the slot bandwidth, which is why you can use x1 risers with a x16 PCI-E card without a noticeable loss of hash rate. As long as the motherboard has PCI-E slots, with two cards it would work.

That's actually bittersweet. That means you could have a slow CPU, but there are no slow CPUs that have motherboards that support a lot of PCIe lanes.