Cheapest 16GB DDR5 RAM ranked by price per GB

16GB DDR5 RAM: budget AM5 builds, DDR5 laptops and single sticks

16GB is the smallest DDR5 size worth considering in 2026, and it is bought for three reasons: a budget AM5 or Intel DDR5 build where every pound counts, a laptop from 2022 onward with a free SO-DIMM slot, or a single 16GB stick to pair with one already fitted. The 107 16GB DDR5 kits and modules above are ranked by price per gigabyte, from £10.00/GB to £66.96/GB (median £17.14/GB); the cheapest right now is ORIGIN STORAGE - RAM MEMORY 16GB DDR5 4800MHZ SODIMM 1RX8 NON-ECC 1.1V at £159.99.

Single 16GB stick or 2x8GB?

This matters more on DDR5 than on DDR4:

• 1x16GB modules are single-rank, built from eight 16Gbit chips. Two of them (32GB) are the standard gaming kit, but one on its own runs in single channel and gives half the bandwidth of a pair. Fine for a laptop with one slot, not ideal as the only memory in a desktop.
• 2x8GB DDR5 kits use narrower chips with fewer bank groups, and are measurably slower than a 2x16GB kit at the same rated speed. They are the cheapest way to dual channel on AM5, but the saving over 32GB is often small per gigabyte.
• Laptop SO-DIMMs at 16GB are usually single sticks at 4800 or 5600MT/s, sold to fill a second slot or replace an 8GB module.

Speed and latency

Speeds here run from 4,800 to 6,400MT/s. On AM5, 6000MT/s CL30 to CL36 with an EXPO profile is the target even at this size; 5600 is a sensible budget step. On Intel 12th to 14th generation and Core Ultra, 5600 to 6400 with XMP covers it. Laptops run at their own fixed speed, usually 4800 or 5600, and a faster SO-DIMM simply runs at that speed; the 16GB laptop RAM page shows those on their own. DDR5 desktop modules are not compatible with DDR4 boards, and DDR5 SO-DIMMs will not fit a DDR4 laptop.

Is 16GB of DDR5 enough?

For office work, browsing and lighter games, yes. For a new gaming PC, several current titles recommend 32GB, and the step to the 32GB DDR5 page usually costs less per gigabyte and fixes the single-rank and narrow-chip penalties above. Many builders who start with 16GB end up replacing it rather than adding to it, because adding a second kit later on DDR5 means four sticks or mismatched modules. If you are choosing between platforms, our DDR4 vs DDR5 guide and the 16GB DDR4 page show what the same capacity costs a generation back.

Reading the table

The For column separates desktop DIMMs from laptop SO-DIMMs, and the Capacity column shows whether a listing is one stick or two. Every DDR5 module has on-die ECC as part of the standard; that is not full ECC, which needs a module sold as ECC UDIMM or RDIMM. Brands at this size include Crucial and Kingston JEDEC-speed modules alongside gaming kits. All 16GB memory: 16GB; every DDR5 kit: DDR5.