Motherboards with 3 PCIe x16 Slots

3 motherboards with 3 PCIe x16 Slots. Prices run $787 to $851.

ASUSSpec score 9.1

sTR5, DDR5, 1TB, 3 PCIe x16 slots

+Supports up to 1024 GB of memory

+ECC memory support for error correction

+Three PCIe x16 slots for multiple expansion cards

−Uses the large sTR5 socket for Threadripper PRO processors

$851.99

as of 11/04/2026 12:09 PST - Details

SupermicroSpec score 8.6

LGA4710, DDR5, 8 Memory slots, 2TB

+Supports up to 2TB of DDR5 memory

+Three PCIe x16 slots for expansion cards

+ECC memory support for error correction

−Eight RAM slots, fewer than dual socket boards

$787.00

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

GIGABYTESpec score 8.6

LGA1700, ATX, DDR5, 4 Memory slots

+Four M.2 slots for multiple storage drives

+Four DDR5 RAM slots supporting up to 128GB

+Three PCIe x16 slots for expansion cards

No price recorded yet.

Compare specs

Socket	Memory type	Memory slots	Maximum memory	PCIe x16 slots	Spec score	Price
sTR5	DDR5		1TB	3	9.1	$851.99 as of 11/04/2026 12:09 PST - Details
LGA4710	DDR5	8	2TB	3	8.6	$787.00 as of 11/04/2026 07:10 PST - Details
LGA1700	DDR5	4		3	8.6	No current price

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