• Full mesh on the front panel and top with large vents on the side panel for superior cooling
  • 3 designated places for radiators: 240mm: top, front; 120mm: rear
  • Supports up to three 200mm large fans for extreme  airflow with support for up to 9 total fans (KKN1: 9 fans, KWN1: 7 fans, WWN1-V2: 7 fans)
  • New ODD tool-less design EZ tray for quick installation
  • Supports up to 10 SSDs (4 in the removable HDD/SSD combo cage, 1 behind the M/B tray) and 7 HDDs with HDD/SSD combo trays
  • Dual Super Speed USB 3.0
  • High-end component support long graphics cards up to 423mm and tall CPU coolers up to 171mm
  • Multiple removable dust filters (top, front, PSU) for improved system maintenance
  • Top compartment with cover to place personal belongings

Introducing the new generation of iconic CM 690 series – CM 690 III!

CM 690 III is a revolutionary update to the popular CM 690 II mid-towers.The exterior retains the curved metal mesh look the series is known for. The interior has been completely updated the HDD/SSD combo cage can be switched between 3.5-inch or 2.5-inch drives by adjustable trays without any screw.There's enough room for a 240mm liquid cooling radiator at the top or front, 120mm in the rear and supports up to 9 fans, including 3 large 200mm fans for extreme airflow. And cleaning is hassle free thanks to the multiple dust filters at the bottom, top, and front.


  • Removable top cover for easier installation and maintenance
  • Supports long VGAs up to 423mm / 16.6 inch
  • Large slide-out dust filter for easy maintenance
  • Dual SuperSpeed USB 3.0; The cover protects I/O area and top compartment
  • Removable HDD/SSD combo cage with adjustable HDD/SSD trays
  • Extra cable management space (27mm); Supports one SSD behind the M/B tray


  • Supports a 240mm radiator at the top
  • Supports a 120mm radiator in the rear
  • Supports two 120mm fans or one 180/200mm fan on the side panel (CMS-693-KKN1)
  • Supports a 200mm fan at the top
  • Supports a 240mm radiator in the front
  • Includes a front 200mm fan for high airflow


  • Top: 120/140mm fan x 2, or 200mm fan x 1 (optional)
  • Front: 200mm fan x 1 (installed), or 120/140mm fan x 2 / 180mm fan x 1 (optional)
  • Rear: 120mm fan x 1 (installed)
  • Side: 120mm fan x 2 or 180/200mm fan x 1 (optional) for CMS-693-KKN1
  • Bottom: 120mm fan x 1 (optional)
  • HDD cage: 120mm fan x 1 (optional)

Liquid Cooling Compatibility List


Model Number

Green: CMS-693-GWN1 (with side panel window)

Available Color



Polymer, mesh front bezel

Dimensions (W x H x D)

230 x 507 x 502 mm / 9.1 x 20.0 x 19.8 inch

Net Weight

8.9 kg / 19.6 lbs

M/B Type

microATX, ATX

5.25" Drive Bays

3 (exposed)

3.5" Drive Bays

7 (hidden)

2.5" Drive Bays

10 (hidden; 7 from the HDD/SSD combo cages, 1 under the ODD cage, 1 behind the M/B tray,1 at the bottom)

I/O Panel

USB 3.0 x 2, USB 2.0 x 2, Audio In & Out (supports AC97 / HD Audio)

Expansion Slots


Cooling System

Top: 120/140mm fan x 2, or 200mm fan x 1 (optional)

Front: 200mm fan x 1 (installed), or 120/140mm fan x 2 , 180mm fan x 1(optional)

Rear: 120mm fan x 1 (installed)

Side: 120mm fan x 2 or 180/200mm fan x 1(optional) - for CMS-693-KKN1 (standard version) only

Bottom: 120mm fan x 1 (optional)

HDD cage: 120mm fan x 1 (optional)

Power Supply Type

Standard ATX PS2

Maximum Compatibility

VGA card length:

423 mm / 16.6 inch (without cage)

312mm / 12.3 inch (with SSD cage)

280mm / 11.0 inch (with HDD cage)

CPU cooler height: 171mm / 6.7 inch

No additional files, specification sheets, guides or documentation found for product.

Warranty: 12 Month Return To Base

Full manufacturers warranty details are available at the manufacturers (CoolerMaster) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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