Introduction

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.

Material	Aluminum front panel, SECC body
Color	RC-840-KKN1-GP (black)
	RC-840-SSN1-GP (silver)
Motherboard	ATX, mATX, eATX
Drive Bay	Exposed	5.25” x 63.5” x1 (Uses a 5.25” bay)
	Internal	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	7
Front I/O Port	USB 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)
Dimension	(W) 9.57 x (H) 22.83 x (D)24.80 inches