Lowest per GBVikye DDR4 RAM High Performance 16GB PC4‑19200 Desktop Memory for/PCs, Aluminum Alloy Material (4GB)
Vikye·16GB
£35.17
£2.20/GB per GB
Compare desktop memory and DIMM RAM for gaming PCs and workstations. Find the cheapest PC RAM by price per gigabyte from Corsair, G.Skill, Kingston, and more.
Whether you are building a new PC or upgrading an existing rig, our daily Amazon UK price tracking lets you filter by DDR4 or DDR5, brand, and capacity — then sort every module by £/GB.
As an Amazon Associate we earn from qualifying purchases. Prices shown are from Amazon UK in GBP and were accurate as of 29 July 2026; they are subject to change. The price and availability shown on Amazon at the time of purchase is the one that applies.
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Lowest priceJooehyer 1Pcs DDR4 RAM Memory 4GB 2133Mhz Desktop Memory 288 Pin DIMM RAM PC4 17000 RAM Memory for Desktop
Jooehyer·4GB
£9.79
£2.45/GB per GB
Most popularCORSAIR VENGEANCE RGB DDR5 RAM 32GB (2x16GB) 6000MHz CL36-44-44-96 1.35V Intel XMP 3.0 Computer Memory – Black (CMH32GX5M2E6000C36)
Corsair·32GB
£372.99
£11.66/GB per GB
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Frequently asked questions
What type of memory does my desktop use?
Desktop computers use DIMM (Dual Inline Memory Module) modules. Most modern desktops use DDR4 or DDR5 DIMMs. Check your motherboard's specifications to determine which generation and speeds are supported. DDR4 and DDR5 are not interchangeable.
How many memory slots does my desktop have?
Most desktop motherboards have 2 or 4 memory slots. Some high-end boards have 8 slots. Check your motherboard's manual or specifications to see how many slots are available. For dual-channel performance, use 2 or 4 modules of the same capacity and speed.
Can I mix different memory speeds?
You can install memory modules of different speeds, but they will all run at the speed of the slowest module. For best performance, use identical modules from the same kit. Mixing different brands or capacities can sometimes cause stability issues.