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Motherboards with 3 PCIe x16 Slots

All motherboards

3 motherboards with 3 PCIe x16 Slots. Prices run $260 to $863.

All filtersFilters (2)×
Memory type: DDR4  ×PCIe x16 slots: 3  ×Clear all
BrandSupermicro2
SocketLGA20112LGA2011-31
Memory typeDDR43DDR53
PCIe x16 slots33
PriceUnder $3001Under $8001Under $9001$700 & above2$800 & above1
Clear allShow 3 motherboards
Memory type: DDR4  ×PCIe x16 slots: 3  ×3 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
SupermicroSpec score 8.6

LGA2011, DDR4, 16 Memory slots, 1TB

+Supports up to 1024 GB of RAM
+Sixteen RAM slots for large memory capacity
+Three PCIe x16 slots for expansion cards
−Only 1G LAN speed
$863.20
as of 11/04/2026 18:08 PST - Details
GenericSpec score 8.2

LGA2011-3, E-ATX, DDR4, 8 Memory slots

+Dual CPU socket design for high processing capacity
+Eight DDR4 slots supporting up to 512GB
+Three PCIe x16 slots for expansion cards
−Large E-ATX form factor needs a spacious case
−1G network speed is slower than newer boards
$259.90
as of 11/04/2026 16:07 PST - Details
SupermicroSpec score 8.6

LGA2011, DDR4, 16 Memory slots, 1TB

+Supports up to 1024 GB of RAM
+Sixteen RAM slots for large memory capacity
+Three PCIe x16 slots for expansion cards
−Only 1G LAN speed
$795.00
as of 11/04/2026 18:08 PST - Details

Compare specs

motherboardSocketMemory typeMemory slotsMaximum memoryPCIe x16 slotsSpec scorePrice
LGA2011DDR4161TB38.6$863.20
as of 11/04/2026 18:08 PST - Details
LGA2011-3DDR48512GB38.2$259.90
as of 11/04/2026 16:07 PST - Details
LGA2011DDR4161TB38.6$795.00
as of 11/04/2026 18:08 PST - Details

Before you buy

Other PCIe x16 slots options

PC Cases264CPU Coolers393Processors247Data Center GPUs82Graphics Cards371Power Supplies237Memory374Storage Drives577Binoculars228Network Cables1,382Cameras2,556Chromebooks196

Popular filters

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Motherboards by use

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Related product types

Motherboards with 1 PCIe x16 Slot74Motherboards with 2 PCIe x16 Slots17Motherboards with 4 PCIe x16 Slots9

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