- AI
Azure OpenAI for Business
20 Mar, 2026







£2606.98 inc. VAT
AI-generated summary
For £2.1k ex-VAT, the ASUS RS501A-E12-RS4U is one of those “right tool, right shop” rack servers. It’s the sort of 1U box you buy when you need a compact, brand-backed platform for straightforward workloads—virtualisation in small deployments, app servers, light storage roles, or as a reliable general compute node in an existing rack. The big practical upside with ASUS (compared to cheaper no-name alternatives) is usually the day-to-day admin experience: sensible remote management, decent platform design for serviceability, and firmware that doesn’t feel like a guessing game. If your team already has a handle on rack systems and wants something dependable rather than experimental, it makes sense.
Why you might *not* buy it: at this price, you’re paying for server heritage and 1U efficiency, not maximum compute per pound. If you’re building a cost-optimised cluster, moving to denser 2U/4U designs for better cooling/upgrade paths can be better value—especially if you expect growth or heavier I/O. Also, with 1U specifically, thermals and acoustics can be more demanding, so it’s only a good fit if your rack environment is set up properly. **Who should buy:** small businesses, IT teams, or MSPs needing a compact, supportable rack node for predictable workloads. **Who shouldn’t:** anyone trying to squeeze the most performance/upgrade flexibility for the money, or running in a marginal cooling environment.

Asus
RS520A-E12-RS12U/1G/1.6kW/12NVMe/FAN/RH/

Asus
ASUS ESC4000A-E10 - Server - rack-mountable 2U - 1-way - no CPU - RAM 0 GB - SATA - hot-swap 2.5", 3.5" bay(s) - no HDD - AST2500 - Gigabit Ethernet - no OS - monitor: none

Lenovo
Intel Xeon Gold 6136 - 3 GHz - 12-core - 24 threads - 24.75 MB cache - for ThinkAgile VX 1U Certified Node 7Y93, ThinkAgile VX2320 Appliance 7Y93, ThinkSystem SR630

Lenovo
Lenovo ThinkSystem SR250 7Y51 - Server - rack-mountable 1U - 1-way - 1 x Xeon E-2224 / up to 4.6 GHz - RAM 8 GB - SATA - hot-swap 3.5" bay(s) - no HDD - Matrox G200 - Gigabit Ethernet - no OS - monitor: none