Server motherboard recomendation

[Basil Alias]

I need a dual sp3 motherboard with 15 pcie slot. SATA and m.2 numbers doesn't matter. Ram slots don't matter. any recomendations

[mariushm]

You won't get any motherboard with 15 slots ... it's just too much distance, the maximum trace length (from socket to gpu chip on a video card for example) is around 20 inches

 

You can get "server grade" pci-e switches, boards that connect to the motherboard using a pci-e x8 or x16 slot and create multiple pci-e x16 slots.

examples:

Cyclone Microsystems - PCI Express Expansion Backplanes and Adapters

PLX Technology PEX 8632 RDK PCI Express Switch GEN 2 + x16 Cable Adapter Tested | eBay

 

[svmlegacy]

26 minutes ago, Basil Alias said:

I need a dual sp3 motherboard with 15 pcie slot. SATA and m.2 numbers doesn't matter. Ram slots don't matter. any recomendations

Take a look at some of the mining motherboards. 15 1x connections was available from a few different manufacturers.

[Basil Alias]

1 hour ago, svmlegacy said:

Take a look at some of the mining motherboards. 15 1x connections was available from a few different manufacturers.

But minning boards come with 8x which would cause a bottle neck for 16x

[svmlegacy]

18 hours ago, Basil Alias said:

But minning boards come with 8x which would cause a bottle neck for 16x

So let's get this straight... you're asking for 15x 16x PCIe lanes? On dual SP3? 240 PCIe lanes?