Frequently asked questions

Your motherboard and CPU decide this, not preference. A DDR4 board only takes DDR4 and a DDR5 board only takes DDR5 — they are physically keyed differently. Newer platforms (Intel 12th-gen and later, AMD AM5 / Ryzen 7000+) use DDR5; most systems from roughly 2016–2021 use DDR4. Browse DDR5 or DDR4.

As a guide: 8 GB for basic office and browsing, 16 GB for mainstream gaming and multitasking, 32 GB for demanding games and creative work, and 64 GB or more for video editing, 3D, virtual machines and servers. Use the Capacity chips at the top of any collection to filter instantly.

For desktops, two matched modules run in dual-channel mode and deliver noticeably more bandwidth than a single module of the same total size (for example 2×16 GB beats 1×32 GB for gaming). When in doubt, buy a matched pair.

It helps, especially on AMD Ryzen and in CPU-bound games, but capacity and compatibility come first. Pick the fastest speed your motherboard officially supports, then enable XMP (Intel) or EXPO (AMD) in the BIOS. Filter by speed using the Speed chips on any collection.

Match three things: generation (DDR3/DDR4/DDR5), form factor (DIMM for desktops, SO-DIMM for laptops and mini-PCs), and a speed your board supports. For brand-name PCs and laptops, tell us your exact model and we will confirm the right part. Our buying guide walks through it step by step.

DIMM is the full-length module used in desktop PCs and servers. SO-DIMM is the shorter module used in laptops, mini-PCs and many all-in-ones. They are not interchangeable. Shop laptop SO-DIMM memory.

ECC (Error-Correcting Code) memory detects and corrects rare memory errors and is used in servers and workstations where data integrity is critical. It needs a CPU and motherboard that support it. Standard desktops and gaming PCs use non-ECC memory. Browse server and ECC memory.

They are one-click BIOS profiles that run your memory at its rated speed — XMP is Intel and EXPO is AMD. Out of the box, high-speed memory often runs slower until you enable the profile in your BIOS/UEFI.

Place your order before 6pm on a business day and we dispatch it the same day. Delivery is free on UK orders over £250. UK delivery is typically 2–3 business days; elsewhere in Europe it is usually 2–5 business days depending on the country. European shipping is calculated at checkout, and tracking is emailed as soon as your order ships.

The United Kingdom plus 28 other European countries — see the full list just below.

We ship with trusted couriers including DHL, UPS, FedEx and GLS, with tracking provided on every order.

Every module is covered by a 2-year warranty. If a module is faulty on arrival we will replace it free of charge. See our returns and refunds page for full details.

Contact us within 30 days and we will arrange a free replacement or return. To avoid this, tell us your system model before you buy and we will confirm compatibility.

Email our support team with your motherboard model, laptop model or system specs and we will recommend the exact module — usually within one business day.