Corsair’s K70 gaming keyboard updated with more responsive optical switches

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Corsair’s K70 gaming keyboard updated with more responsive optical switches
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The original had standard mechanical switches.

with more traditional Cherry mechanical switches. Aside from the switch change, the new K70 is broadly identical to last year’s model, with a detachable USB-C cable, RGB lighting, and a tenkeyless layout.

The reason you might want a gaming keyboard with optical switches comes down to debounce delay, which typically affects keyboards with traditional mechanical switches. When you press a mechanical switch, there can be a brief period when its metal contacts clatter together before eventually settling, and this means the keyboard can take a moment to register a keypress.

Ocbina declined to share who is manufacturing Corsair’s OPX optical mechanical switches but said it’s a linear switch with a 1mm actuation distance. That compares to a 2mm actuation distance for Cherry’s MX Red switch or 1.2mm for its speed-focused Silver switch. The K70 scans for keypresses at 4,000Hz internally and reports them to a connected PC at up to 8,000Hz . Corsair says this keeps median latency below 0.25ms.

Other features of the K70 include durable PBT double-shot keycaps, a hardware tournament switch to disable macros during competitive play, media keys, a volume roller, and the ability to coordinate the keyboard’s lighting effects via Corsair’s iCUE software. For an idea of how the non-switch parts of the keyboard perform in practice, check out our review of the

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