RAM is the component people overpay for or under-purchase almost as often as the PSU. Too little, and the OS starts swapping — everything stutters even though the CPU and disk are fine. More than you need, and you’ve spent money that would have bought a better GPU.
The baseline: 16GB in 2026
16GB is the sensible floor for a new machine. It runs Windows or Linux, a browser with tabs, office work and a modern game at once. It is also the point where a single memory stick is a mistake — two matched sticks run in dual-channel and measurably improve frame pacing and compile times.
What your workload really needs
| Workload | Recommended | Why |
|---|---|---|
| Gaming + browser + Discord | 32GB | Modern games with background apps exceed 16GB |
| Software development (editor + build + containers) | 32GB | Docker and dev servers eat RAM quickly |
| Docker/Kubernetes + local databases | 32–64GB | Each container and DB instance reserves memory |
| Virtual machines | 64GB+ | Guests need their own headroom on top of the host |
| Video editing / rendering / 3D | 64GB | Timelines and previews scale without bound |
| Local AI models / training | 64GB or GPU VRAM | Models live in VRAM first; system RAM feeds it |
Where extra RAM is wasted
For pure 1080p gaming with nothing else open, 32GB equals 16GB — games rarely want more. For most people the difference between 32GB and 64GB shows up only with VMs, local AI, or serious editing. When in doubt, buy the larger number of gigabytes you can afford IF the workload list above matches — otherwise put the money toward a better GPU.
Speed, DDR4 vs DDR5, and matching
RAM generation must match your motherboard — DDR4 and DDR5 are physically incompatible. Enable the memory profile (XMP/EXPO) in BIOS, and buy matched kits: two sticks of the same speed and capacity. Mixing RAM of different speeds makes the whole system run at the slowest stick.