Understand RAM speed ratings, CAS latency, and memory timings. What actually matters for performance.
Key Takeaways
- Always check compatibility before purchasing any upgrade. Use our model-specific guides for verified specifications.
- DDR4 and DDR5 are not interchangeable – verify which generation your device supports.
- Form factor matters – laptops use SO-DIMM, desktops use DIMM, NAS devices typically use SO-DIMM.
- Maximum capacity limits vary by device – exceeding them causes boot failures or wasted money.
Practical Recommendations
Based on testing across hundreds of devices:
- Office work: 16GB RAM + 500GB SSD
- Gaming: 32GB RAM + 1TB NVMe SSD
- Content creation: 32-64GB RAM + 2TB NVMe SSD
- Servers: 64-128GB ECC RAM + enterprise NVMe
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Related Guides
FAQ
How do I check compatibility?
Use our model-specific guides or check the manufacturer QVL. Always verify DDR generation, form factor, and max capacity.
Where to buy upgrades in the UK?
We recommend Amazon UK for best pricing, selection, and returns.
Will upgrading void my warranty?
Most manufacturers consider RAM/SSD upgrades user-serviceable. Check your specific warranty terms.
Updated April 2026.
Practical Advice
When choosing components, always verify compatibility with your specific system first. A compatible mid-range component will always outperform an incompatible premium one. Check your system’s user manual or our compatibility guides for supported specifications.
Consider your actual workload when deciding what to buy. There’s no benefit to paying for performance you’ll never use — but equally, skimping on a critical component can bottleneck your entire system.
Find Compatible Upgrades
Use our guides and tools to find the right parts for your system.
RAM Guide SSD GuideRelated Guides
Recommended RAM Upgrades
How we verify this guide
Every compatibility figure here is checked against manufacturer specifications, official service manuals, and the standards that govern fit — memory type and speed (DDR4 / DDR5 / LPDDR5), maximum supported capacity and slot count, SSD form factor and interface (M.2 2280, NVMe PCIe vs SATA, keying), and charger wattage and connector (USB-C Power Delivery, GaN). We’re explicit about soldered or non-upgradeable parts, prioritise primary sources over retailer listings, and re-verify the data on a regular cycle. More on our method →
