DDR5 buying is mostly about getting one matched 6000MHz kit, enabling its profile, and not overpaying for numbers your games never use.
Quick Answer
For university res students, 32GB of DDR5-6000 CL30 (around R2,400) is the build-once answer, and latency (CL timing) is worth paying for when your workload actually uses it. For pure 1080p/1440p gaming, capacity past 32GB and exotic speeds add little; for editing, VMs or many browser tabs, the extra headroom pays off.
When latency is worth paying for
Lower CL timings (CL30 vs CL36 at the same 6000MT/s) shave a few nanoseconds off every memory access, which shows up as better 1% lows in CPU-bound games - useful when an RTX 4070 is pushing high-refresh 1080p or 1440p. The real-world gap is a few percent, so pay for CL30 if it's within R200 of CL36, but don't chase CL28 boutique kits.
Match the kit to your board and CPU
Always buy a single matched kit, not two separate sticks - mixing kits is the classic cause of boot-loops. Confirm your motherboard's QVL supports the speed, and remember four DDR5 sticks often force a lower clock than two. For a Ryzen 5 7600 or Core i5-13400F gaming build, 2x16GB DDR5-6000 CL30 with EXPO/XMP is the dependable, frame-rate-friendly choice in SA.
FAQ
How much DDR5 RAM do I need today?
32GB (2x16GB) is the build-once floor for gaming plus multitasking. 16GB still plays games fine today, while 64GB only helps heavy editing, VMs or large datasets.
What's the best DDR5 speed for gaming?
DDR5-6000 CL30 on AMD (it runs 1:1 with the controller) and 6000-7200 on Intel. Higher numbers add little for most games and can even regress on Ryzen.
Do I have to enable EXPO or XMP?
Yes - DDR5 boots at a slow ~4800MT/s default. One BIOS toggle for EXPO (AMD) or XMP (Intel) unlocks the rated speed and the 5-10% performance you paid for.
Buy one matched 2x16GB DDR5-6000 CL30 kit, check it against your board's QVL, and enable EXPO or XMP in BIOS the first time you boot.