Overclocking
Pushing a CPU, GPU, or memory above its rated clock speed for extra performance. Possible on most desktop CPUs/GPUs and on "K" / "X" / "XT" SKUs; uncommon on laptops.
Overclocking exploits the silicon lottery — chips binned for a given rated speed often run higher with more voltage and better cooling.
Returns are shrinking
Modern CPUs and GPUs already boost aggressively from the factory, often using every watt the cooler can dissipate. Manual overclocks add 3–8% headline performance on top — far less than the 20–30% gains of the Sandy Bridge / Pascal era.
Memory overclocking still matters
DDR5 XMP / EXPO profiles take RAM from its JEDEC baseline (4800–5600 MT/s) to enthusiast speeds (6400–8000 MT/s). The gain on AMD Ryzen — especially with Infinity Fabric tuning — can hit 10%+ in games.
Costs
- More heat, more noise, more power.
- Reduced silicon lifespan (marginal at typical voltages, real at extremes).
- Risk of instability that surfaces only weeks later.
In comparisons
We do not include overclocked scores in Mars Score — only stock performance. A "K" CPU that out-overclocks a non-K still wins on stock benchmarks too.