Motherboards with 4 PCIe x16 Slots

2 motherboards with 4 PCIe x16 Slots from Supermicro and ASRock Rack. Prices run $1,042 to $1,103.

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 9.5

LGA4189, E-ATX, DDR4, 16 Memory slots

+Supports up to 4096 GB of DDR4 memory

+Sixteen RAM slots for large memory configurations

+Four M.2 slots for multiple fast storage drives

$1,103.20

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

Compare specs

motherboard	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
	LGA4189	E-ATX	DDR4	4TB	4	9.5	$1,103.20 as of 11/04/2026 07:10 PST - Details

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