I'm building a new gaming PC with a Ryzen 7 7800X3D and Radeon RX 9070, and RAM is the last part I need. I mainly play Counter-Strike 2 and Rainbow Six Siege, but I'd also like to play newer games such as War Dogs and other demanding titles in the future. Some games currently show around 14–15GB of RAM usage on a 16GB system, although they don't appear to use all available memory. The PC is intended to last at least six years, so should I buy 32GB now, or would 16GB be enough for gaming, Discord, a browser, and similar background apps?
4 Answers
For a new gaming build you should get 32GB, ideally as a matched 2x16GB DDR5 kit. Sixteen gigabytes still works for many games, but it’s increasingly the minimum, especially if you keep Discord, a browser, music, or recording software open. The extra capacity gives you more headroom and should help avoid stuttering as newer games become more demanding.
I wouldn’t plan around buying one 16GB stick now and adding another much later. The exact kit may be discontinued, and mixing modules can sometimes cause compatibility or speed issues. On this platform, a matched 2x16GB kit is generally the better setup because it runs in dual channel. If you absolutely can’t afford 32GB today, 16GB is usable as a temporary solution, but I’d treat it as an upgrade priority.
Sixteen gigabytes can still handle games like CS2 and Rainbow Six with a few background apps. RAM usage also isn’t a perfect indicator of what a game strictly requires—games often make use of available memory for caching. However, newer AAA titles can get close to or exceed 16GB, so 32GB is the sensible choice if you want this system to remain comfortable for several years.
You only need more than 32GB for heavier multitasking, virtual machines, video editing, huge modded games, or similar workloads. For ordinary gaming, 32GB is the current sweet spot; 64GB is optional rather than necessary.
The difference may show more in frame-time consistency and 1% lows than in average FPS. A game can remain playable with 16GB, but running out of headroom makes background tasks and occasional stutters more likely.