Best Processors Under £400 (2026)
37 active processors priced at or below £400 · sorted by editor rating then price · prices update hourly
About this price band
The £400 cap is where most UK buyers in the processors market actually shop. Processor reviews that treat value as a first-class metric. Every CPU is benchmarked with stock settings and measured against the nearest Intel or AMD counterpart. We only feature products with a live, primary affiliate offer, so every entry can actually be bought today. Prices are pulled from Amazon UK and refreshed on a regular schedule, so what you see here is what you will pay on the merchant page when you click through.
Every processor we list under £400
AMD Ryzen 5 5600G processor ( integrated Radeon Graphics, 6 Cores /12 Threads, 65W DTP, AM4 Socket, 19MB cache, up to 4.4 Ghz max boost, wraith stealth cooler)
4.8/5£154.99
AMD Ryzensets 3 3200G processor (Radeon Vega 8 integrated GPU, 4 cores/4 threads, 65W TDP, AM4 socket, 6MB Cache, up to 4.0 Ghz max boost frequency , wraith stealth cooler)
4.7/5£49
