NVIDIA ConnectX-8 C8240 - Network adapter - PCIe 6.0 x16 - 400Gb Ethernet QSFP112 x 2

Product Overview

AI-generated summary

NVIDIA’s ConnectX-8 C8240 is the sort of NIC you buy when you already *know* you’re in a high-throughput, low-latency environment and you’re not trying to “dip your toe” into faster networking. At ~£1,915 ex-VAT, it has to earn its keep—think GPU-accelerated clusters, serious east-west traffic in virtualisation stacks, or storage/compute platforms where every millisecond and every GB/s matters. If your bottleneck is somewhere else (CPU, storage, oversubscribed switching, software inefficiency), this won’t magically fix that. But if your network path is the limiting factor, it’s a genuinely solid, future-leaning investment.

Who should buy: buyers running modern Linux with the right driver support, and teams that can actually tune networking and validate performance (datacentre/cluster engineers, platform teams, cloud-on-prem operators). Who shouldn’t: SMBs, general IT refurb projects, or anyone looking for a “standard” upgrade—because the cost and operational overhead don’t make sense unless you’re deliberately building around high-speed fabrics and you have compatible switching and a workload that benefits. Also, check compatibility with your server platform and—crucially—your QSFP optics/cabling and switch ports; you don’t want to discover the real spend is elsewhere after the fact.