RAM price per GB by DDR type
We currently track 996 available memory listings on Amazon UK. Here is how the two mainstream generations compare on price per gigabyte:
DDR4 remains the most affordable option per gigabyte, making it a great choice for budget builds and upgrades. DDR5 costs more per GB but offers higher bandwidth and better efficiency — the preferred choice for new builds on Intel 12th Gen+ or AMD Ryzen 7000+.
RAM price per GB by capacity
As a rule, higher-capacity kits offer a lower price per gigabyte. A 32GB kit typically beats a 16GB kit on value. For the best price per GB, buy the largest capacity your budget and motherboard support.
| Capacity | Cheapest / GB | Average / GB | Products |
|---|---|---|---|
| 8GB | £4.49/GB | £12.48/GB | 68 |
| 16GB | £2.20/GB | £11.72/GB | 168 |
| 32GB | £4.58/GB | £15.46/GB | 319 |
| 64GB | £4.69/GB | £13.00/GB | 141 |
| 128GB | £5.25/GB | £11.51/GB | 22 |
Laptop vs desktop vs server RAM prices
Desktop DIMM memory is typically the cheapest per gigabyte, followed by laptop SO-DIMM modules. Server ECC/registered memory commands a premium for its error-correcting reliability.
What affects the price of RAM?
Several factors influence how much you'll pay per gigabyte:
- DDR generation — DDR5 costs more than DDR4, though the gap is closing as DDR5 matures.
- Speed (MHz) — faster modules cost more per GB. Mid-range speeds offer the best value for most users.
- Capacity — larger kits (32GB+) generally offer a lower price per gigabyte.
- Form factor — laptop SO-DIMM modules typically cost slightly more than desktop DIMMs.
- ECC / server grade — error-correcting memory costs more due to extra components and testing.
- Brand — premium brands may charge more than budget options, though performance varies.
- Timing / sales — prices fluctuate; Black Friday and Prime Day can bring significant discounts.