Skip to content

PCIe network cards

10Gtek X540-T2, dual-port ten-gigabit copper card on PCIe 2.1 ×8 vs KALEA-INFORMATIQUE 11888237, dual-port 2.5-gigabit card on PCIe 3.1 ×1 with two Intel I226 controllers

Two ten-gigabit sockets in an ×8 slot, or two 2.5-gigabit sockets in a single lane?

By

Both have two copper sockets and both brackets, and both state their PCIe generation and lane count. The 10Gtek X540-T2 runs 10 GbE, 1 GbE and 100 Mb/s on an Intel X540, on PCIe 2.1 ×8, with Cat 6A to 100 m, jumbo frames to 15.5 KB and a three-year warranty. The KALEA-INFORMATIQUE card runs 2.5GBASE-T down to 10BASE-Te on two Intel I226 controllers behind a bridge, on PCIe 3.1 ×1, with the longest operating system list on the shelf.

10Gtek dual-port 10GbE PCI Express network card with two copper RJ45 sockets

10Gtek X540-T2, dual-port ten-gigabit copper card on PCIe 2.1 ×8

8.2/10

Wins 2 of 8

Check price

KALEA-INFORMATIQUE dual-port 2.5G PCIe network controller card with two RJ45 sockets

KALEA-INFORMATIQUE 11888237, dual-port 2.5-gigabit card on PCIe 3.1 ×1 with two Intel I226 controllers

7.8/10

Wins 1 of 8

Check price

Port against port

Compared on X540-T2, dual-port ten-gigabit copper card on PCIe 2.1 ×8 11888237, dual-port 2.5-gigabit card on PCIe 3.1 ×1 with two Intel I226 controllers
PCIe generation PCIe 2.1, 5.0 GT/s PCIe 3.1
Lane count Eight One
Port speed standard 10 GbE, 1 GbE and 100 Mb/s copper 2500BASE-T, 1000BASE-T, 100BASE-TX and 10BASE-Te
Port count Two Two
Controller family Intel X540 Two Intel I226, marked SRKTU, joined by an ASM bridge
Bracket heights supplied Two Two
Cooling arrangement Not published Not published
Stated operating system support Windows Server 2003, 2008 and 2012, Windows 7, 8 and 10, Linux and ESX/ESXi Windows ME, 98SE, 2000, XP, Vista, 7, 8, 10 and 11 in 32-bit and 64-bit, Windows Server including Server…
On Amazon.com, October 26, 2026 $50 Listed, no current offer

A tick means one listing published something the other did not, or published a better figure. It does not mean the product is better, and the column is not a score out of anything: a maker who says less loses lines here without losing a comparison. The two verdicts below are where the page is settled.

Which of the two, for which household

Buy the 10Gtek X540-T2, dual-port ten-gigabit copper card on PCIe 2.1 ×8

Take the 10Gtek for a 10GBASE-T network and a free ×8 slot: four times the speed per socket. It does not link at 2.5G or 5G, and Windows 11 needs manual setup. It cost $49.99 on Amazon.com on October 26, 2026.

KALEA-INFORMATIQUE 11888237, dual-port 2.5-gigabit card on PCIe 3.1 ×1 with two Intel I226 controllers

No Amazon.com offer for the KALEA-INFORMATIQUE 11888237, dual-port 2.5-gigabit card on PCIe 3.1 ×1 with two Intel I226 controllers on October 26, 2026: it may not be buyable in the United States, which is the first thing to weigh against anything below.

Take the KALEA for a machine with only an ×1 slot free and a 2.5-gigabit switch. One PCIe 3.1 lane carries about 8 Gbit/s, enough for both sockets at 2.5. It had no Amazon.com offer on October 26, 2026.

The questions that come up before an order

Will the 10Gtek work with a 2.5-gigabit switch?

Only at 1 GbE: its rates are 10G, 1G and 100M. For a 2.5G or 5G switch, a card that supports those rates is the one to pick.

Why does the lane count matter?

Two 10 Gbit/s sockets need about 20 Gbit/s of bus, which PCIe 2.1 ×8 provides; two 2.5 Gbit/s sockets need 5 Gbit/s, which one PCIe 3.1 lane provides.

Each one, in detail

Every price named in a summary was read on the date that review carries. What a shop asks today is shown beside the product, and it moves.