Keyboards are one of the few areas in computing where technology appears to have receded rather than progressed. The first keyboards on computer systems used mechanical switches to detect the depression of the keys. As time passed, economics took over and cheaper alternatives to mechanical switches were found. The cheapest of these alternatives is the dome-switch; which took over as the mainstream technology. These dome-switches are by all accounts an inferior technology. Whilst not in the scope of this review, a full recounting of the benefits of mechanical switches is available: http://www.overclock...-keyboard-guide
Having researched thoroughly the available mechanical keyboards, and taking into account my bad track record with Razer products, I finally decided on Corsair's K90. Without further ado.
Specifications
Courtesy of Corsair's product page
- Light, responsive Cherry MX Red mechanical switches for fast, efficient gaming action
45g actuation force
2mm to actuation and 4mm to bottom
Rated for 50 million operations
Gold contacts - Tuned silicon dome key switches: F1 through F12, Esc, PrtScn, Scroll Lock, Pause/Break, Insert, Home, Page Up Page Down, Delete, and End
- Three banks of eighteen G Macro Keys with Macro Record and Bank Select hot keys
- 36Kb of on-board memory for storing up to three sets of eighteen G keys for gaming on the go
- Laser-etched, backlit keys with four illumination levels (off, 66%, 75%, and full illumination) selectable from the keyboard
- Six multimedia keys — Stop, Previous, Play/Pause, Next, Mute, Volume Up/Down — with Solid metal, weighted volume “drum roller”
- Windows Lock key for uninterrupted game play
- Metal top plate for increased strength, durability and rigidity
- USB pass-through connector giving easy access to a USB port on the back of the keyboard
- 2m non-tangle cable Adjustable feet tilt for optimum personalisation and positioning
The K90 is sold as a premium product, and first impressions of the packaging bear this idea out. The box is solid and has enough weight to feel like a quality product. Inside, the packing holds the keyboard firmly in place with plenty of protection from accidental damage during shipping.


The Keyboard
First impressions of the keyboard are good. The keyboard feels sturdy and looks great. The cable provided connectivity is extremely sturdy and has two USB connectors to allow for a USB socket at the top of the keyboard. Also worth noting is the unique design of the keys on the board. They are positioned above the baseplate which gives the appearance that they are floating. Aesthetically this gives the keyboard a great look and in practicality should allow for much easier cleaning of the keyboard.




Usage Impressions
I admit that coming into this review I was sceptical of the benefits of a mechanical keyboard as opposed to other keyboard technologies. It seemed unlikely that the simple change in switches would lead to a noteworthy change in usability or typing habits. I was wrong.
The mechanical keys are outstanding. My typing speed has increased dramatically. While I could not tell you why this is, I suspect it is due to the much faster rebound and the significantly lighter actions of the keys. Having typed the entire review above with this keyboard, I find myself wondering how I last so long with such a mediocre keyboard previously. The texture and feel of the keyboard is outstanding and the action of the keys makes you want to press them repeatedly just for the novelty of feeling their action.
Unfortunately, this brings me to the largest short falling of the keyboard. This keyboard is not entirely mechanical. As noted above in the technical specification, all of the escape, F (function), G (macro) and the key cluster above the direction arrows are in fact dome-switches.

Conclusion
The K90 represents Corsair's first crack at a mechanical keyboard. It's a worthy first attempt and represents a great buy if you can get past the hybrid nature of the dome-switch/mechanical-switch key blend. It is worth noting that with the premium market this keyboard targets, corsair ask a premium price. At $160 Australian, the K90 is far and away the most expensive mechanical keyboard on the market. I would be inclined to say however, that it is well worth it with outstanding aesthetics and a great feel.
It is also worth mentioning the K60 keyboard offered by Corsair. The K60 is $30 cheaper and is the same mechanical keyboard as the K90. The K60 lacks the keyboard width wrist rest (replacing it with a WASD wrist rest), blue LEDs and the programmable macro keys. In all other regards it is the same keyboard. If you are looking to save some money or don't need these extra features, the K60 is well worth your time.
Pros
- Great aesthetics and build quality
- Outstanding touch and feel
- Strong blue back-lighting
- Programmable macro keys
- Comfortable (removable) wrist rest
- 2 year warranty
- Expensive
- Not entirely mechanical
- A noted issue with LED lights failing
24/03/2013 - Corrected the address discussing the pros/cons of the various switches.
Edited by articuno1au, 23 March 2013 - 20:25.







