All SpecsCalc Tools
Free, data-driven calculators for building and tuning a PC — each one gives a real, verifiable answer, not a generic number.
Auto PC Builder
Budget-to-parts list, balanced and bottleneck-free, $500–$2000+.
Bottleneck Estimator
Honest CPU/GPU balance by resolution, game type and upscaling.
PSU Wattage Calculator
Recommended power-supply size with a transient-safe buffer.
LLM VRAM Calculator
Will a local AI model fit your GPU? Weights + KV cache + overhead.
SFF GPU Clearance Checker
Does that GPU fit your small case? Length, thickness, height, bend.
RAM Latency Calculator
True latency in ns — compare DDR4 and DDR5 kits fairly.
FPS & Frame-time Calculator
Convert FPS to ms and see which refresh rates you saturate.
Valorant ↔ CS2 Sensitivity
Carry the exact same aim between Valorant and CS2.
New to building? Start with the No-Bottleneck PC Building Guide.