CPU & GPU Bottleneck Guide + Popular PC Configurations

Popular CPU/GPU Builds & Bottleneck Guide

Explore community-favourite desktop combos, check the bottleneck in one click, and learn how to read CPU/GPU usage. (Pure comparison)

CPU & GPU Usage Patterns — How to read them

Low CPU + Low GPU

Light workloads. Plenty of headroom; smooth multitasking.

Low CPU + Maxed GPU

Graphics-bound. Lower heavy effects or upgrade GPU for more FPS.

High CPU + High/Max GPU

Balanced, near-optimal. Cap FPS or trim shadows to stabilise 1% lows.

Max CPU + Low GPU

CPU-bound (AI/simulation/strategy). Faster cores or CPU upgrade helps.

Max CPU + Max GPU

Full utilisation in very demanding scenes—watch thermals to prevent throttling.

What to expect by resolution

ResolutionTypical limitPractical tuning tips
1920×1080 (1080p)CPU-bound in esports; mixed in AAAPrefer higher CPU clocks; cap FPS for consistent frametimes.
2560×1440 (1440p)BalancedBest value sweet spot. Trim shadows/RT first if 1% lows dip.
3840×2160 (4K)Mostly GPU-boundUse DLSS/FSR/XeSS, watch VRAM; textures & RT are heavy.
Ultrawide (3440×1440, 5120×1440)GPU-boundReduce post-processing and high-cost AA before geometry.

Resolution guidance: where bottlenecks usually appear and what to tweak first.

Frequently asked questions

Is a GPU bottleneck a problem?

No—at higher resolutions it’s expected and often preferred. The GPU sets FPS while the CPU keeps headroom for background tasks.

How can I reduce a CPU bottleneck?

Lower CPU-heavy settings (crowds, view distance, traffic/physics), enable a frame cap, close background apps, or upgrade to a CPU with stronger single-thread boost.

Do I need more RAM?

For modern games 16–32 GB is the practical range; heavy creators and high-res texture packs may want 48–64 GB.