Per-Key Quality Testing

In order to test the quality and consistency of a keyboard, we are using a texture analyser that is programmed to measure and display the actuation force of the standard keyboard keys. By measuring the actuation force of every key, the quality and consistency of the keyboard can be quantified. It can also reveal design issues, such as the larger keys being far softer to press than the main keys of the keyboard. The actuation force is measured in Centinewton (cN). Some companies use another figure, gram-force (gf). The conversion formula is 1 cN = 1.02 gf (i.e. they are about the same). A high quality keyboard should be as consistent as possible, with an average actuation force as near to the manufacturer's specs as possible and a disparity of less than ±10%. Greater differences are likely to be perceptible by users. It is worth noting that there is typically variance among keyboards, although most keyboard companies will try and maintain consistency - as with other reviews, we're testing our sample only.

The machine we use for our testing is accurate enough to provide readings with a resolution of 0.1 cN. For wider keys (e.g. Enter, Space Bar, etc.), the measurement is taking place at the center of the key, right above the switch. Note that large keys generally have a lower actuation force even if the actuation point is at the dead center of the key. This is natural, as the size and weight of the keycap reduces the required actuation force. For this reason, we do display the force required to actuate every key but we only use the results of the typical sized keys for our consistency calculations. Still, very low figures on medium sized keys, such as the Shift and Enter keys reveal design issues and can easily be perceptible by the user.

Unsurprisingly, the performance of Cherry’s genuine switches is exceptional. Cherry’s products are of excellent quality and we always receive very consistent readings from them. We measured the average actuation force across the main keys of the keyboard to be 44.3 cN, almost in perfect alignment with the manufacturer’s specification (45 gram-force, or 44.1 cN). The disparity is at just 2.6% across the main keys of the keyboard, a low reading even for Cherry MX switches. Only figures above 8-9% could be discernable by touch and we consider everything below 7% to be a very good reading. 

Hands-on Testing

I always try to use every keyboard that we review as my personal keyboard for at least a week. My typical weekly usage includes a lot of typing (about 100-150 pages), a few hours of gaming and some casual usage, such as internet browsing and messaging. I personally prefer Cherry MX Brown or similar (tactile) switches for such tasks but I do not find linear switches to be uncomfortable either. For professional use, the Cherry MX Red switch may not be ideal due to the lack of feedback, yet it is very comfortable for long term use. Generally speaking, the Corsair K63 with Cherry MX Red is comfortable for long-term professional use, with a good wrist rest and soft, comfortable switches. However, it is a tenkeyless keyboard, which is good for portability for the wireless keyboard, but can be an issue for gamers (or power-users in general) who are accustomed to having a numpad.

For gaming, the keyboard is both very practical and comfortable for long gaming sessions, especially on the software side, as the provided iCUE software can be used to work miracles in more complex games. The size of the keyboard also means the keyboard isn't competing for desktop space with a mouse quite as much, making the K63 ideal for several game genres but especially idyllic for FPS/TPS action games. The wrist rest and linear switches make it very comfortable for long gaming sessions. When paired with the wireless Ironclaw mouse, it becomes an excellent desktop for advanced living room gaming.

For any users intending to use the K63 as a mobile solution, the keyboard's battery life should suffice for short trips and events. The K63 has a battery life of nearly a week with the backlighting turned off, however this plummets to as little as 6-7 hours of continuous use with the backlighting at maximum brightness. That should be long enough for a typical LAN party or couch gaming session, but it is not the kind of device that one can rely on to operate for weeks without a recharge.

At this point, we should also discuss the connectivity options of the Corsair K63, especially in parallel with the Ironclaw mouse. Both the keyboard and the mouse offer three connection modes – wired, 2.4 GHz wireless, and Bluetooth wireless. The keyboard can be connected to a USB port and operate as a wired keyboard, capable of switching to either the 2.4GHz USB dongle or Bluetooth connection on the fly. This makes it easy to get the keyboard setup, and while this isn't strictly an on-label feature, it also effectively allows the keyboard to be simultaneously connected to three devices at once.

The mouse is a little bit more complicated matter, with the USB cable overriding the Bluetooth connection if connected to a PC. This means that the mouse has to be disconnected entirely from the USB port in order to switch to a Bluetooth connection. However the same isn't true for the 2.4GHz connection: if the mouse is switched to the 2.4 GHz mode, it ignores the USB cable.

On the software side of matters, although there is profile synergy between Corsair’s different products via the iCUE software, there is no option for connectivity synergy between the different devices. This means that if, for example, the keyboard switches over to another device, the mouse will not follow unless manually switched too. That feature is especially useful for users that have multiple devices and want one desktop capable of switching between all of them (PC, laptop, tablet, and even a phone). Only very few office-oriented desk sets offer such a feature and it would be very interesting to see a gaming desktop with a mechanical keyboard capable of such swift connectivity changes.

The Corsair K63 Wireless Mechanical Gaming Keyboard Final Words and Conclusion


View All Comments

  • Marlin1975 - Monday, September 16, 2019 - link

    Still more MicroUSB devices/cables/etc... that C right now. Be dumb for Corsair to go after a smaller market and limit themselves.

    Type C will take over eventually, but not over night.
  • TheinsanegamerN - Monday, September 16, 2019 - link

    USB C came out 4 years ago. Most new android phones today use usb C outside of budget models.

    Dont make excuses for them. Type C is here, now. There is no reason to use microUSB over type C unless you are lagging 5 years behind the competition. This would be like releasig a parallel CD ROM drive in 2004, years after USB became universal.

    They should have used type C in something this price.
  • Marlin1975 - Monday, September 16, 2019 - link

    USB-C is still a mess and barely getting better. Don't take my word for it, there are plenty of reviews/reports that go into it.

    Its why so many new phone, laptops, etc... still use MicroUSB.
  • DanNeely - Monday, September 16, 2019 - link

    The mess of mutually incompatible fast charging standards barfed on top of USB is a cluster on micro-b too; not something new for C. For a keyboard with a small battery and presumably a simple battery controller it's almost certainly a moot point with no fast charging modes being supported. Stacking thunderbolt, and multiple optional video output options on top of basic data is irrelevant for a keyboard.

    Meanwhile reversible plugs being easier to use, and the USB-C socket being stronger than the micro-B one are very relevant; especially since the rear location of the charging port means a lot of people will be trying to plug it in blind.

    OTOH if this is a 2016 model not having C isn't that surprising since it was a fairly avant-garde feature at the time.
  • catavalon21 - Monday, September 16, 2019 - link

    It's not that old. It was announced at CES in January 2018, and reviews all over the Net started in the months after that. Reply
  • Korguz - Monday, September 16, 2019 - link

    " Don't take my word for it " based on your previous FUD comments, dont worry :-) Reply
  • Lord of the Bored - Tuesday, September 17, 2019 - link

    Except back in 2004, compatibility and support for older hardware was a thing people concerned themselves with.
    If some barbarian needed an external CD drive, it was almost certainly for a laptop, and even odds if their machine even had USB ports. (The smart money would've been a CD-ROM with a PC Card interface, but I don't think anyone ever actually shipped those.)
  • piiman - Saturday, September 28, 2019 - link

    Go buy an adapter then Reply
  • snowmyr - Monday, September 16, 2019 - link

    I would imagine when most people complain about not having usb type C they are probably just referring to the micro-usb end only.

    I have a ducky keyboard with micro usb and of course i could't care less that the cable attaches to the keyboard that way considering it's a wired keyboard and i don't plan on ever removing it.

    For a wireless keyboard that cost a fair amount of money... well there is the hardware failure point for most of them one day.
  • dan82 - Monday, September 16, 2019 - link

    I wish Type A would die as well, but I pointed out microUSB because for an accessory the device side is more important given that you can always swap out the cable. And also, microUSB feels more legacy than Type A, given how Android embraced it years ago on their phones.

    Type A is going to stick around for a long time unfortunately. No company sells a real Type C hub (as opposed to a connect-your-legacy-devices-hub). Heck, even Tesla still puts it in its cars. I’m pretty pessimistic there.

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