Overclocking GPUs and CPUs in 2025: what is still worth it and what is not
Overclocking raises the clock speed of a GPU, CPU or memory beyond its factory setting to gain performance. With modern boost algorithms already extracting most of the headroom, manual GPU overclocks yield 3–8 % and CPU overclocks rarely more than 5 % in games, while memory tuning and undervolting often give better results for less heat.
OC · GPU overclock · CPU overclock · PBO · memory overclock
Key figures
From the FPSHQ database, as of Oct 15, 2026
What still gives gains
The FPS calculator on FPSHQ predicts stock performance; add a few percent for a stable overclock — rarely enough to change a buying decision.
| Target | Typical gain in games | Risk / cost | Worth it? |
|---|---|---|---|
| GPU core +100–200 MHz | +2–5 % | low; instability only | moderate |
| GPU memory +1–2 Gbps | +2–6 % at 4K | low; silent error correction | yes at high res |
| GPU power limit +10–20 % | +2–5 % | heat, noise | only with good cooling |
| Ryzen PBO + Curve Optimizer | +2–5 % | low | yes — automatic |
| Intel all-core OC (K chips) | +0–5 % | heat, degradation risk on 13th/14th gen | rarely |
| RAM: XMP/EXPO + timings | +5–15 % in CPU-bound games | stability testing needed | yes |
| 3D V-Cache CPUs | limited (locked or PBO only) | — | not needed |
Why the returns shrank
Boost algorithms (NVIDIA GPU Boost, AMD Precision Boost 2, Intel Thermal Velocity Boost) already run chips at the edge of their power and thermal limits. Pushing further mostly raises power consumption quadratically for linear clock gains, and new high-end chips are power- rather than silicon-limited. Memory overclocking stays relevant because bandwidth is often the bottleneck at 4K, and RAM tuning helps CPU-bound games because latency improves.
Degradation is real on Intel 13th/14th-gen Raptor Lake at high voltages — Intel issued microcode limits in 2024 — so conservative settings and current BIOS are advisable.
Doing it sensibly
Undervolting delivers most of the sustained-performance benefit of overclocking with less heat and is the better first step on laptops and compact PCs.
- GPU: Afterburner — core +100, memory +500 (×2 for effective), test in 3 games and 3DMark; back off on artefacts or crashes
- Ryzen: enable PBO, set Curve Optimizer negative offsets, verify with Core Cycler
- RAM: enable XMP/EXPO first; then tighten timings if comfortable; test with TestMem5/Karhu
- Keep an eye on temperatures and power — the real limiter
On your PC
Enter your GPU (and CPU) — we calculate the effect of "Overclocking" with the unified FPSHQ model using Cyberpunk 2077 as the example.
Save your PC in the account · Detect hardware with the app · Unified FPSHQ model estimate, not a measurement.
Where to use this on FPSHQ
Forum discussions
What is Overclocking?
Overclocking raises the clock speed of a GPU, CPU or memory beyond its factory setting to gain performance. With modern boost algorithms already extracting most of the headroom, manual GPU overclocks yield 3–8 % and CPU overclocks rarely more than 5 % in games, while memory tuning and undervolting often give better results for less heat.
- of GPUs since 2020 have ≥ 12 GB
- 67%
- tier S GPUs
- 52
FAQ
Is overclocking worth it in 2025?
Does overclocking void the warranty?
Can overclocking damage hardware?
Should I overclock a 7800X3D or 9800X3D?
Sources
FPSHQ Team · methodology · methodology · Updated
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