Laptop and mini-PC RAM: the SO-DIMM upgrade guide
DDR4 vs DDR5 SO-DIMM, dual-channel rules, soldered-memory traps, and when the upgrade is worth it.
Updated 2 July 2026 · RAMPrice editorial — no paid placement, see methodology.
A RAM upgrade is still the best money-per-minute improvement for a slow laptop or mini-PC — when the machine allows it. The checks take two minutes and save a return.
Before you buy anything
- Is the memory soldered? Many thin-and-lights and all recent MacBooks have no SO-DIMM slots at all. Check the service manual or a teardown before buying.
- DDR4 or DDR5? They are keyed differently and not interchangeable. 12th-gen Intel/Ryzen 6000 and later laptops are usually DDR5; older machines DDR4.
- Fill both channels. Integrated graphics live and die by memory bandwidth — 2×16 GB will game noticeably better than 1×32 GB in an iGPU machine.
What to pay
SO-DIMM pricing tracks desktop pricing loosely but has its own dips — laptop kits are a classic candidate for cross-marketplace arbitrage because local availability is patchier. Compare the DDR5 SO-DIMM and DDR4 SO-DIMM tables sorted by per-GB landed price, and remember JEDEC-standard kits (e.g. DDR5-5600 CL46) are fine for laptops — XMP/EXPO rarely applies.
The honest ceiling
Past 32 GB, most laptop workloads stop noticing. Put the difference towards an SSD or keep it — an upgrade that lands at a great price is the one worth making.
Prices in this guide’s category move constantly — the live comparison is always the current answer, ranked by real landed price to your country.