How to choose your RAM

A practical guide to picking memory that actually works in your machine — written for builders, not for search engines. Five minutes here saves a return.

Browse all memory →

🧩1. Start with your motherboard

RAM compatibility is decided first by your motherboard chipset and CPU socket. Get this wrong and nothing else matters.

AMD AM4Ryzen 3000–5000 · DDR4

AMD AM5Ryzen 7000–9000 · DDR5

Intel LGA170012th–14th Gen · DDR4 or DDR5

Intel LGA185115th Gen Arrow Lake · DDR5

Older Intel / AMDDDR3

Not sure? Check the QVL (Qualified Vendor List) on your motherboard manufacturer page, or email us your model and we will confirm the exact module.

📊2. Capacity: how much do you actually need?

Use case	Recommended
Office, web, light gaming	16 GB
Modern gaming (1440p and up)	32 GB
Content creation, 3D, VMs	64 GB
Workstation, ML, heavy multitasking	128 GB+

Headroom matters more than peak capacity. Modern games happily use 20–24 GB on their own, so 16 GB systems start to swap — 32 GB is the new comfortable baseline for gaming.

⚡3. Speed and latency — what matters in 2026

The first number on a kit (for example 6000 MT/s) is bandwidth. The CL number (for example CL30) is latency — how many clock cycles the memory waits before responding. Lower CL at the same speed is faster, but the real-world gap is usually small until you exceed roughly 10% CL difference.

DDR5 sweet spots: AMD AM5 — 6000 MT/s CL30 (going above 6400 forces the Infinity Fabric off its 1:1 ratio and the gains evaporate). Intel 14th/15th Gen — 6400–7200 MT/s; the memory controller tolerates higher speeds than AMD.
DDR4 sweet spot: 3200–3600 MT/s CL16 on both AM4 and Intel LGA1700 — faster kits exist but the returns are tiny.

🛡️4. ECC vs non-ECC

ECC (Error Correcting Code) memory corrects single-bit errors silently and detects double-bit errors. It is essential for servers and workstations where silently corrupted data is unacceptable. It does not make a consumer gaming PC measurably more stable.

AMD AM5: supports unbuffered ECC on most B650 and X670 chipsets.
Intel consumer chipsets: no ECC — you need Xeon W or AMD Ryzen Pro.

Browse server and ECC memory →

📏5. DIMM vs SO-DIMM

DIMMDesktops and servers · 288-pin (DDR4/DDR5)

SO-DIMMLaptops, mini-PCs, AIOs · 260-pin DDR4 / 262-pin DDR5

The two are not interchangeable. Always check which form factor your machine takes before ordering. Shop laptop SO-DIMM →

👥6. Single stick vs kit (2× or 4×)

Two sticks unlock dual-channel mode, which roughly doubles memory bandwidth. Always prefer a kit of two matched modules over a single stick of the same total capacity.

Mixing kits — even of the same brand and rated speed — often fails to boot at the rated XMP/EXPO profile. Buy the right kit the first time.

🔧7. XMP, EXPO, AMP

These are pre-validated overclock profiles stored on the module and enabled in BIOS. Without one, your RAM runs at the slow JEDEC base speed — so you paid for speed you are not using.

XMP (Extreme Memory Profile) — Intel boards
EXPO (Extended Profiles for Overclocking) — AMD AM5 boards
AMP (AMD Memory Profile) — older AM4 boards

Enable the profile in BIOS after installing the modules.

✨8. RGB or no RGB

Functionally identical. RGB modules add 1–2 mm of height — check clearance against tall air coolers (Noctua NH-D15 and similar). Choose based on aesthetics and your case window.