Corsair OPX vs Kailh Speed Silver
The Corsair OPX and the Kailh Speed Silver are often cross-shopped. The main differences: they are not interchangeable: the Corsair OPX is a proprietary Corsair optical switch that only fits keyboards built for it, not the standard MX hot-swap sockets the Kailh Speed Silver uses; the Kailh Speed Silver is lighter to actuate (40g versus 45g); travel is 3.2 mm on the Corsair OPX and 3.5 mm on the Kailh Speed Silver.
Choose the Corsair OPX if
- you want a switch popular for Corsair optical boards.
- you want a switch popular for speed gaming.
- you want a heavier, more deliberate press (45g).
Choose the Kailh Speed Silver if
- you want a switch popular for competitive gaming.
- you want a switch popular for fast actuation.
- you want a lighter keystroke (40g).
Corsair OPX vs Kailh Speed Silver, spec by spec
| Corsair OPX | Kailh Speed Silver | |
|---|---|---|
| Type | Linear | Linear |
| Compatibility | Corsair optical boards only | Standard MX sockets |
| Actuation force | 45g | 40g |
| Bottom-out force | n/a | n/a |
| Pre-travel | 1 mm | 1.1 mm |
| Total travel | 3.2 mm | 3.5 mm |
| Stem | n/a | POM |
| Top housing | n/a | PC |
| Bottom housing | n/a | nylon |
| Spring | n/a | single-stage |
| Factory lube | n/a | none |
| Pins | n/a | 3-pin |
| Price / switch | n/a | $0.35 |
| Sound profile | optical gaming linear | light, clacky |
| Released | 2021 | 2016 |
Highlighted rows are where the two differ; a check marks the objectively stronger spec (price, battery, modability). Feel and preference rows never get a check. Fields marked n/a are unpublished by the maker; we list only verifiable numbers.
Where they sit among all 227 switches we track
22% of the 198 switches tracked here actuate lighter than the Corsair OPX; 7% of the 198 switches tracked here actuate lighter than the Kailh Speed Silver.
6% of the 224 switches tracked here have shorter total travel than the Corsair OPX; 16% of the 224 switches tracked here have shorter total travel than the Kailh Speed Silver.
30% of the 193 switches tracked here cost less per switch than the Kailh Speed Silver.
Where to buy the Corsair OPX
No verified retailer link right now. Check the maker or your usual switch retailers.
Where to buy the Kailh Speed Silver
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