How to compare two controllers
Connect both controllers to your computer via USB or Bluetooth, select Controller A and Controller B in the top slot selector, and move your sticks and triggers to compare live readings in real time.
Our split-screen diagnostic engine samples both gamepads simultaneously under identical browser conditions, rendering parallel stick circularity plots, deadzone radar charts, trigger linearity bars, and composite health scores side by side.
What to compare, and what actually matters
When comparing two controllers, prioritize resting center drift, circularity error percentages, and trigger actuation depth over cosmetic wear or external shell condition.
A pristine-looking refurbished gamepad may conceal heavily worn potentiometer carbon tracks, while a scuffed controller may retain perfect factory centering. Stick resting coordinates (under Âą0.03 is ideal) and full trigger actuation (1.00 at full pull) are the true indicators of hardware condition.
Checking a used controller against your own
Side-by-side comparison allows you to benchmark a newly purchased pre-owned or refurbished controller against a known healthy baseline before your return window closes.
By testing both gamepads concurrently on the same computer, you eliminate host variable factors like USB hub latency or Bluetooth interference, proving immediately whether the pre-owned controller matches OEM specifications.
Has my controller degraded?
Comparing your primary controller against a brand-new backup gamepad reveals subtle potentiometer spring fatigue, loose stick tension, and degraded trigger springs.
Controller degradation occurs gradually over hundreds of hours. Comparing an aging controller against a fresh unit shows exactly how much resting deadzone has developed and whether analog stick return springs have loosened.
Reading the comparison result
Focus on the Health Score delta: a score difference greater than 15 points indicates noticeable in-game performance degradation in accuracy and response time.
If Controller A scores 94 while Controller B scores 68, Controller B suffers from pronounced drift or truncated trigger pull, requiring either firmware recalibration or stick replacement.
Frequently Asked Questions
Can I test two controllers at once?
Yes. Connect both and this page reads them in parallel, showing drift, range, latency and health score side by side under identical conditions.
How do I tell if a used controller is worth buying?
Compare it against a pad you know is healthy. Resting drift and full stick range are the two readings that matter; visible wear is a poor indicator.
How many controllers can I connect?
Two at a time for direct comparison. The homepage tester handles up to four connected pads separately.
Do both controllers need to be the same model?
No. Different models can be compared, though stick hardware differs, so compare against the same model where you can.