Corsair K70 RGB Pro Review

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Corsair is back at it again with a new version of their popular K70 mechanical keyboard – this one is called the… K70 RGB PRO. Innovative, I know! But then again, so is the price, at £170, or $160-170 without tax. For your money, you do get genuine Cherry MX switches, double shot PBT keycaps, and 8,000Hz polling. That’s all well and good, but is it actually worth that pretty hefty price tag? Let’s take a look.

Corsair have stuck to their guns for the K70 and are still using the original Cherry MX switches. You have 5 options, Reds, Browns, Blues, SILENT Reds, or SPEED Silvers. Personally, MX Browns are still my favourite out of those options so that’s what I’ve got here, although since building my own keyboard last year I’ve been getting accustomed to the Glorious Panda switches I picked for that.

On top of those switches, you will find double shot PBT keycaps, with a slight textured finish to them. While these should be pretty durable, and I can’t quite explain why, they just feel very… cheap. They feel like cheap plastic, and they have a less-than-premium sound too – have a listen.

On top of the sound, the typing feel isn’t all that special either. I’m not sure if I’ve just been spoiled by the Panda switches I now use every day or if the rumour that the quality of the Cherry MX switches has gone downhill since their patent ran out is true, but it just doesn’t feel all that great to me. The tactile bump is really, really difficult to feel, and the amount of slop in the travel isn’t all that pleasant either. Don’t get me wrong, it’s not terrible, but it just doesn’t feel very premium.

For gaming though, it’s fine. It’s not an absolute standout, but I had a decent enough time with it. The feel still wasn’t the best and the tacky clacking (and pinging space bar) were a touch off putting – not deal breaking of course but for £170 I’m not sold. With that said, the extra features might sway you. The first of which is the 8,000Hz “hyper-polling” – as in the keyboard will send the keypress to your PC in as little as 0.125ms after registering it, down from the standard 1ms of a 1,000Hz keyboard. I say after it registered it, because the internal controller scans the keys at 4,000Hz, or once every 250us, so the minimum time to register a key is 250us, and more realistically it’s likely to be anywhere from 0.25ms to 1ms depending on how the scan and transmit events line up. Either way, this should mean a slight reduction in input lag which is always welcomed, although isn’t something I would say is the biggest selling point, at least on a keyboard anyway.

Now since they are using a mechanical key switch instead of an optical one, you might be wondering how they handle having the springy metal bouncing around when you actuate a switch. In short, they register the key press on the first signal they receive, then pause for a few milliseconds before registering any other keypresses from that switch. The traditional method is the other way around, where they normally wait for the “steady state” signal to form before registering it – the reasoning being they don’t want to have a random pulse to trigger a keypress if you didn’t actually press it, but happily in my admittedly limited experience with this board I didn’t have any issues with keys triggering if I didn’t want them to so it’s all good there.

Lastly on the gaming feature front is the new tournament switch. This is something we’ve seen before on their K70 TKL Champion series, and is something I think makes more sense on that TKL board than this. Basically it’s a little switch, locking flap and LED that when activated, disables any macros or custom keybinds and profile switching, and sets the RGB lighting to a fixed, solid colour (by default it’s red although you can change it in their software). They say fixing the lighting is to reduce distractions from RGB lighting, although Dominik, a high level tetris and clone hero player gave me a great rundown of how setting a fixed LED colour can actually improve the keyboard’s performance thanks to the controller not needing to spend time animating LEDs and can instead actually scan the keys instead. Corsair says the controller is multi-threaded so in theory this isn’t as big of a deal but it’s interesting to know anyway.

What’s also interesting is the feet on this – looking at the bottom what you see is absolutely massive chunks of rubber. In theory they should grip your desk like there’s no tomorrow, but on both my mouse mat and the bare desk it still slides at least a little. With either stepped foot up or down, it slides around. Now I can’t say I noticed that while actively using the keyboard, but I thought it was worth noting for any prospective buyers watching.

A few other little bits you should know – this uses a detachable USB C cable with quite a deep and tight recess, although most type C cables I have around fit in just fine so it’s no big deal. The cable itself is nice enough, it’s braided and feels fairly premium, as does the palm rest. It’s a soft touch sort of foam feel, although palm rests like this never work for me, they are always far too flat and close to often even touch my hands while typing or gaming – but it’s included in the box anyway. The media keys at the top right are a weird mix – the playback controls are these glossy plastic buttons with what I’m certain is mushy membrane keys beneath them, but then you have a milled metal volume wheel (that is pretty sharp, it can take the skin off your finger if you aren’t careful), and a mouse switch under the mute button next to it. The profile, lock and brightness buttons on the other side are also mouse switches, meaning you get three different kinds of switches on this board (and if I’m being honest none I’m all that fond of).

Here’s the thing, a shed load of people are going to buy this thing, regardless of what I say. In fact, some will be watching this video to confirm their buying decisions and will probably be screaming confirmation bias in the comments, and that’s fine. The board is decent enough – if you like Cherry MX switches, you’ll have a perfectly fine experience gaming and typing with this. Personally I can’t say it’s something I enjoyed using all that much, and for the price tag there are a whole load of options I’d rather spend my own cash on – Corsair’s own K70 MK.2 is about £50 cheaper right now, or Wooting’s Two HE is on preorder for a tenner less and is considerably more feature rich – but if the brand name means that much to you then fair play to you. I certainly wouldn’t stop you, but if you are looking for a recommendation I’d pass on this one personally.