Cooler Master ATCS 840 Review 21

Cooler Master ATCS 840 Review

Packaging & Contents »


I would like to thank Cooler Master for supplying the review sample.

Cooler Master started out with offering computer cases a few years back. The ATC series was a huge success and the cases were incredibly well made. The ATC-201 aluminum case was part of the Maximum PC "Dream Machine 2001". In 2009, Cooler Master has released the ATCS 840, which is defined by the same high quality aluminum construction we have seen in the ATC line, along with a new look and all the modern features we would want in a chassis like this.

The new chassis comes in two colors - silver or black. We received the latter for review.

Aluminum front panel, SECC body
RC-840-KKN1-GP (black)
RC-840-SSN1-GP (silver)
Drive Bay
5.25” x 63.5” x1 (Uses a 5.25” bay)
3.5” x 6
Cooling System
Front: 230 x 30 mm standard fan x 1, 700 RPM, 19 dBA (included)Top: 230 x 30mm standard fan x 2, 700 RPM, 19dBA (included)(can be swapped for three 120mm fans)Rear: 120 x 25mm standard fan x 1, 1200 RPM, 17 dBA (included)Bottom: 120mm (optional)HDD Module: 120mm fan x 2 (optional)External Air Duct: 120mm fan x 1 (optional)
Expansion Slot


Front I/O PortUSB 2.0 x 2, eSATA x 1, Firewire 400 x 1, Audio x 1, Mic x 1
Power Supply

Dual Standard ATX PS2 / EPS 12V (optional)

Net Weight
Net Weight: 13.25 kg (29.21 lbs), Gross Weight: 15.75 kg ( 34.72 lbs)
(W) 9.57 x (H) 22.83 x (D)24.80 inches
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May 17th, 2022 00:18 EDT change timezone

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