Motherboards with 4 PCIe x16 Slots

4 motherboards with 4 PCIe x16 Slots from Supermicro and ASRock Rack. Prices run $791 to $1,196.

GIGABYTESpec score 9.5

sTR5, DDR5, 4 PCIe x16 slots, 4 M.2 slots

+sTR5 socket supports Threadripper PRO 7000 processors

+Four M.2 slots for extensive storage expansion

+Four PCIe x16 slots for multiple expansion cards

$1,042.01

as of 11/03/2026 23:11 PST - Details

SupermicroSpec score 9.2

LGA4677, DDR5, 4TB, 4 PCIe x16 slots

+10G LAN speed for fast networking

+Supports up to 4096 GB of DDR5 memory

+Four PCIe x16 slots for multiple expansion cards

$1,178.17

as of 11/04/2026 07:10 PST - Details

SupermicroSpec score 9.2

LGA4710, DDR5, 16 Memory slots, 4TB

+Dual socket LGA4710 for two processors

+10G LAN for faster networking

+Supports up to 4TB of DDR5 memory

$1,196.99

as of 11/04/2026 07:10 PST - Details

ASRock RackSpec score 8.9

LGA4189, mATX, DDR4, 8 Memory slots

+Eight DDR4 memory slots for large capacity

+Four PCIe x16 slots for expansion cards

+10G LAN for high-speed networking

$791.21

as of 11/03/2026 21:56 PST - Details

Compare specs

Socket	Form factor	Memory type	Maximum memory	PCIe x16 slots	Spec score	Price
sTR5		DDR5		4	9.5	$1,042.01 as of 11/03/2026 23:11 PST - Details
LGA4677		DDR5	4TB	4	9.2	$1,178.17 as of 11/04/2026 07:10 PST - Details
LGA4710		DDR5	4TB	4	9.2	$1,196.99 as of 11/04/2026 07:10 PST - Details
LGA4189	mATX	DDR4		4	8.9	$791.21 as of 11/03/2026 21:56 PST - Details

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.