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40 Gbps Network Cards

All Network Cards

11 40 gbps network cards. Most cost $155 to $2,929, and half cost less than $499.

All filtersFilters (1)×
Speed: 40  ×Clear all
BrandChelsio Communications1
Speed4011
Ports2511
InterfacePCIe6PCI1
Port typeQSFP7
ControllerIntel5Mellanox3
PriceUnder $1001Under $2002Under $3001Under $4001Under $5001Under $6002Under $9001Under $3,0002
Show all 12$150 & above10$400 & above6$800 & above3$2,500 & above2
Clear allShow 11 Network Cards
Speed: 40  ×11 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
AkpzkyywnSpec score 9.5

40 Speed, 2 Ports, Mellanox

+Dual ports for two network connections
+Mellanox chip listed in the specifications
+40 Gbps speed, well above typical 10 Gbps cards
−Speed is 40 Gbps, requiring compatible infrastructure
$98.78
as of 11/04/2026 10:07 PST - Details
LpxlqklypSpec score 9.5

40 Speed, 2 Ports, PCI, QSFP

+40 Gbps speed for high-throughput server links
+Two QSFP+ ports for dual connections
+Intel XL710 chipset
−Requires QSFP+ transceivers or cables to connect
$253.09
as of 11/04/2026 09:09 PST - Details
LpxlqklypSpec score 8.9

40 Speed, 1 Ports, PCIe, QSFP

+40 Gbps speed for high-throughput server links
+Single QSFP+ port
+PCIe 3.0 x8 interface
−Requires QSFP+ transceivers or cables to connect
−Short bracket only fits low-profile slots
$304.84
as of 11/04/2026 09:09 PST - Details
Akpzkyywn

40 Speed, PCIe, QSFP

+Provides 40 Gbps speed for high-throughput networking
+Uses a PCIe bus that fits standard expansion slots
+Has a QSFP port for fiber connectivity
−QSFP port needs a compatible QSFP transceiver or cable
$2,929.92
as of 11/04/2026 03:07 PST - Details
Chelsio CommunicationsSpec score 9.5

40 Speed, 2 Ports, PCIe, QSFP

+Two ports for dual network connections
+Supports 40 Gb/s speed on each port
+Low profile form factor fits small chassis
$499.00
as of 11/04/2026 06:05 PST - Details
Generic

40 Speed, Intel

+40 Gigabit speed, well above typical adapters
+Dual power ports listed for extra power supply
+Intel chip listed for a known network controller
$809.39
as of 11/04/2026 03:09 PST - Details
Lpxlqklyp

40 Speed, Mellanox

+40G network speed for high-bandwidth connections
+Mellanox chipset for ConnectX-3 VPI compatibility
+Available in short and long bracket configurations
$155.15
as of 11/04/2026 09:09 PST - Details
Aglbvbquo

40 Speed, PCIe, QSFP

+Provides 40 Gbps speed for high-throughput networking
+Uses a PCIe bus that fits standard expansion slots
+Has a QSFP port for fiber connectivity
−QSFP port needs a compatible QSFP transceiver or cable
$2,929.92
as of 11/04/2026 03:07 PST - Details
LpxlqklypSpec score 9.5

40 Speed, 2 Ports, PCIe, QSFP

+Dual-port design with two 40 Gbps ports
+PCIe 3.0 x8 interface
+Includes two QSFP+ modules
$170.26
as of 11/04/2026 09:09 PST - Details
LpxlqklypSpec score 9.5

40 Speed, 2 Ports, PCIe, QSFP

+40 Gbps speed per port
+Two QSFP ports on one card
+PCIe 3.0 x8 bus connection
$535.55
as of 11/04/2026 09:09 PST - Details
Generic

40 Speed, Intel

+40 Gbps Ethernet speed for high bandwidth connections
+Intel chip for 40 gigabit networking
+Converged network adapter supports combined data and storage traffic
$517.00
as of 11/04/2026 06:05 PST - Details

Compare specs

network cardSpeedPortsInterfacePort typeControllerSpec scorePrice
402Mellanox9.5$98.78
as of 11/04/2026 10:07 PST - Details
402PCIQSFPIntel9.5$253.09
as of 11/04/2026 09:09 PST - Details
401PCIeQSFPIntel8.9$304.84
as of 11/04/2026 09:09 PST - Details
40PCIeQSFPn/a$2,929.92
as of 11/04/2026 03:07 PST - Details
402PCIeQSFP9.5$499.00
as of 11/04/2026 06:05 PST - Details
40Inteln/a$809.39
as of 11/04/2026 03:09 PST - Details
40Mellanoxn/a$155.15
as of 11/04/2026 09:09 PST - Details
40PCIeQSFPn/a$2,929.92
as of 11/04/2026 03:07 PST - Details
402PCIeQSFPMellanox9.5$170.26
as of 11/04/2026 09:09 PST - Details
402PCIeQSFPIntel9.5$535.55
as of 11/04/2026 09:09 PST - Details

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.