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400 Gbps Network Cards

All Network Cards

10 400 gbps network cards. Most cost $3,398 to $7,322, and half cost less than $6,700.

All filtersFilters (1)×
Speed: 400  ×Clear all
BrandAhuayk2Odlnmoiox1
Speed40010
ControllerMellanox9Broadcom1
PriceUnder $3,0001$3,000 & above6$5,000 & above5
Clear allShow 10 Network Cards
Speed: 400  ×10 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
Ahuayk

400 Speed, 1 Ports, PCIe, QSFP

+Single 400G QSFP112-DD port
+PCIe 5.0 x16 interface for high bandwidth
+RoCE support for RDMA networking
−Requires a full x16 PCIe slot
$3,398.00
as of 11/04/2026 03:07 PST - Details
Ahuayk

400 Speed, 1 Ports, PCIe, Mellanox

+Single 400G OSFP port
+PCIe 5.0 x16 interface
+RDMA support for low-latency transfers
−Requires a full x16 PCIe slot
$2,998.00
as of 11/04/2026 03:07 PST - Details
JKdfhRY

400 Speed, 2 Ports, PCIe, QSFP

+Two 400G QSFP112 ports
+PCIe 6.0 x16 interface
+Secure Boot with InfiniBand and Ethernet RoCE support
−Requires a full x16 PCIe slot
$6,297.50
as of 11/04/2026 10:07 PST - Details
Edsjtzrsq

400 Speed, Mellanox

+Supports 400 Gbps Ethernet speed for high-bandwidth networking
+Built on a Mellanox network chip
+Card adapter form factor fits standard expansion setups
−Only supports 400 Gbps, so lower-speed links need other hardware
$7,286.19
as of 11/04/2026 10:07 PST - Details
Mbkstcgdc

400 Speed, Mellanox

+Supports 400 Gbps Ethernet speed for high-bandwidth networking
+Built on a Mellanox network chip
+Card adapter form factor fits standard expansion setups
−Only supports 400 Gbps, so lower-speed links need other hardware
No price recorded yet.
Lpxlqklyp

400 Speed, Mellanox

+Mellanox NIC chip
+400 GbE speed for very high-throughput networks
+Supports 400 Gigabit Ethernet
$6,700.36
as of 11/04/2026 10:07 PST - Details
Ptulmrtvn

400 Speed, Mellanox

+Mellanox NIC chip
+400 GbE speed for very high-throughput networks
+Supports 400 Gigabit Ethernet
$7,322.80
as of 11/04/2026 10:07 PST - Details
Odlnmoiox

400 Speed, Mellanox

+Mellanox NIC chip
+400 GbE speed for very high-throughput networks
+Supports 400 Gigabit Ethernet
$7,322.80
as of 11/04/2026 10:07 PST - Details
Lagmlmfge

400 Speed, Mellanox

+Mellanox NIC chip
+400 GbE speed for very high-throughput networks
+Supports 400 Gigabit Ethernet
No price recorded yet.
Xjvqpvhhh

400 Speed, Mellanox

+Mellanox NIC chip
+400 GbE speed for very high-throughput networks
+Supports 400 Gigabit Ethernet
No price recorded yet.

Compare specs

network cardSpeedControllerSpec scorePrice
400Broadcomn/a$3,398.00
as of 11/04/2026 03:07 PST - Details
400Mellanoxn/a$2,998.00
as of 11/04/2026 03:07 PST - Details
400Mellanoxn/a$6,297.50
as of 11/04/2026 10:07 PST - Details
400Mellanoxn/a$7,286.19
as of 11/04/2026 10:07 PST - Details
400Mellanoxn/aNo current price
400Mellanoxn/a$6,700.36
as of 11/04/2026 10:07 PST - Details
400Mellanoxn/a$7,322.80
as of 11/04/2026 10:07 PST - Details
400Mellanoxn/a$7,322.80
as of 11/04/2026 10:07 PST - Details
400Mellanoxn/aNo current price
400Mellanoxn/aNo current price

Before you buy

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Popular filters

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