Crimson Tweaks Ultimate
Every optimization and every tool, including advanced tuning for experienced players. Everything in Premium, plus 120 more tweaks.
Everything in Premium, plus the advanced tools.
Ultimate adds the deeper changes. Advanced tweaks are clearly labelled, explained and never applied without you choosing them.
All 279 optimizations
The complete library, including 120 tweaks not in Premium. Advanced ones are labelled and opt-in.
Maximum FPS mode
The full-power configuration for players who want every frame their hardware can give.
Guided GPU & CPU tuning
Step-by-step tuning with explanations and limits, so you know what each change does.
Smart NVIDIA profile
Driver settings matched to your specific GPU, applied through NVIDIA's profile system and reversible.
Crimson Lab
A/B test a tweak on your own PC: run with and without it and compare measured results.
Everything in Premium
One-Click Optimizer, Game Boost, NVIDIA Optimizer, timer resolution, Autopilot and profiles.
Buy, unlock, measure.
Check out
Pay with card or PayPal in the secure checkout.
Get your key
Your license key and download link are emailed to you. One key, one PC.
Unlock
Run Crimson Tweaks and enter your key on the Unlock page. SmartScreen warning? More info → Run anyway.
Measure
Run the FPS Test, apply your optimizations, then test again. Undo anything that doesn't help.
Results depend on your hardware. Crimson removes Windows defaults and background load that hold your PC back; how much that gains depends on your CPU, GPU and what was slowing them. Measure it yourself with the FPS Test. Problems with a purchase? Open a ticket in the Discord.
Want everything unlocked?
One-time $20. Advanced tweaks stay opt-in, and Restore All puts everything back.