Memory frequency is measured in MHz (or MT/s in more precise terms). DDR4-3200 versus DDR4-3600. DDR5-5600 versus DDR5-6000. The numbers are different — but does it translate into meaningful gaming performance?
The Short Answer
On Intel platforms: memory frequency has a moderate impact on gaming — roughly 3-8% improvement going from DDR4-3200 to DDR4-4000, more noticeable on integrated graphics.
On AMD AM5 platforms: memory frequency matters more because the Zen architecture uses the memory clock to determine the processor's Infinity Fabric speed. DDR5-6000 is the sweet spot for AM5 — at 6000 MHz, memory and fabric speeds align optimally. Going higher often requires tuning the fabric separately and can actually hurt performance if done incorrectly.
When It Does Not Matter
When you are GPU-limited — which is most gaming at 1080p and above — memory speed rarely moves the needle. The GPU is the bottleneck, not memory bandwidth. At 4K gaming, CPU and memory influence is even smaller.
Memory speed matters most in CPU-limited scenarios: very high frame rate 1080p gaming (200fps+ in competitive titles), applications with high memory bandwidth requirements (video editing, data science), and integrated graphics where GPU and CPU share the same memory pool.
What Matters More Than Speed
Capacity matters more than speed for most buyers. 32GB at DDR5-5600 will outperform 16GB at DDR5-7000 for multitasking, game streaming, and anything involving large datasets.