Cooler Master MasterCase SL600M Review: Subtle Style, Great Cooling

If you are in the market for a high performance gaming chassis but you don't necessarily want a case that looks like it belongs in a competitive eSports tournament, Cooler Master's MasterCase SL600M might be just what you are looking for. This gorgeous aluminum-clad chassis has more than enough cooling performance to keep a high-end system cool and noise output to a minimum, but, at $200 (£153), it comes with a premium price tag as well.  


TypeMid-Tower ATX
Motherboard SupportMini-ITX, Micro-ATX, ATX (E-ATX support up to 12 x 10.7 inches)
Dimensions (HxWxD)22.6 x 9.6 x 21.5 inches (573 x 242 x 544mm)
Space Above Motherboard1.5 inches + 1.5 inches above the frame (78mm)
Card Length12.5 inches (318mm)
CPU Cooler Height7.5 inches (191mm)
Power Supply FormatPS2-Style up to 200mm
Weight29.5lbs (13.4kg)
External Bays
Internal Bays4x 3.5 inches
8x 2.5 inches (x4 converted from 3.5)
Card Slots9 + 2 vertical
Ports/Jacks1x USB 3.1 Type C
2x USB 3.0
2x USB 2.0
audio/mic jacks
OtherProximity sensor for lighted USB ports
Front Fans
Rear Fans
Top Fans✗ (Up to 3x 120, two 140 / 200mm)
Bottom Fans2x 200mm
Side Fans
Warranty2 years, limited


The Cooler Master SL600M weighs just under 30 pounds (13.6kg) and measures 22.6 x 9.5 x 21.4 inches (573 x 242 x 544 mm). The combination of sand-blasted aluminum panels and a tinted tempered glass door make for a strikingly handsome chassis. The top of the chassis is essentially two bare aluminum panels separated by a black metal mesh screen. The rear portion of the top panel can be removed for additional airflow.

Sandwiched between the top and front panels are a USB 3.1 Type-C port, two USB 3.0 ports, a pair of USB 2.0 ports, headphone and microphone jacks, a fan speed switch, and power and reset buttons. You’ll also notice a small square proximity sensor nestled in the center of the USB ports.

Triggering this sensor causes the USB ports to light up, making it easier to plug in USB devices in the dark. Removing the front panel is a simple matter of grabbing the lower edge and pulling out and away from the chassis. The front of the chassis is one solid aluminum panel. 

The full-cover, tempered glass side panel is bonded to a metal frame and is darkly tinted. The entire assembly attaches to the frame via thumbscrews in the rear. The panel on the opposite side of the case is steel and painted black. This gives the chassis a very stylish symmetrical look.

The rear of the chassis is a bit different from what you would normally find in a standard ATX mid-tower: Its nine expansion slots (plus two vertical) can be removed and rotated 90 degrees to the left so that you can install all your cards vertically. You will also notice the lack of mounting locations for a fan and PSU. We’ll cover that more later.

On the bottom of the chassis is a full cover plastic mesh filter that covers two large 200mm intake fans. The filter is hinged in the center of the case and can be removed from both the front and rear of the case. The two large, rubber-coated feet are made of aluminum and elevate the case approximately 2 inches.

The fan-filtration system on the SL600M consists of a large one piece fan filter at the bottom of the case covering the massive 200mm intake fans and the black metal mesh in the top of the chassis we mentioned earlier. Cleaning and maintenance for the top panel is best done with the entire panel removed. The bottom filter is hinged in the middle and can be removed from the front or rear.

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  • emeralds1000000
    IMO , All cases test should have two configurations , Water cooling and Air cooling.

    some cases give better results if water cooling is used , and bad results compared to other cases if only Air cooling is used.

    a case X can win case Y in water . but at the same time , that case Y will win over X if only air cooling is being used.
  • richardzbien
    Doesn’t matter how good the cases I would never pay that kind of money for it no way
  • Samuel White
    Any case over $120 is too much. Unless its all metal with 0 plastic and Aluminum.
  • g-unit1111
    I'm not sure I like having the hard drive mounts where the intake / outtake fans are supposed to be mounted. That could be very bad in an air cooling situation.
  • SkyBill40
    Choking off the intake fan for your PSU by covering it with a metal plate doesn't make much sense to me even if it's somewhat perforated. I get the whole functionality thing by trying to utilize every bit of available space, but this one I find utterly baffling. Based on that alone, I wouldn't look at this case even if I were in the market for one where price is no object.

    The only way such a mounting makes sense is with one of the new PSUs that are largely passive in terms of cooling and the fan only kicks on under heavy load or when needed. Even still, I find this mounting position questionable.
  • csar87523
    This Cooler Master SL600M is WORTH the Money, they make Very Good PC Parts and they are 30-60% LOWER than the Middle of the road PC Parts makers!

    I used to have the bleeding edge hardware but things are slower for me and I ALWAYS had 1-2 or 3 Cooler Master Parts or one of their PC Cases!! IT is a Beautiful Case !!
  • PapaCrazy
    As an FT02 fan, this pulls on my heart strings, but not enough. Too many compromises, though it sure is a beauty.

    Kind of sad people aren't willing to pay for nice cases anymore. Led to companies giving up on quality and unique design due to materials and tooling costs. Atleast if you spend money on a good case it doesn't go obsolete, it will last multiple builds.
  • jcwbnimble
    I can appreciate Cooler Master trying something different, but there is one glaring mistake in this case. The power supply is dumping all its heat into the case. Yes, the exhaust is facing upwards so most of the hot air should just exit up and out of the case, but it just seems contrary to put the exhaust of one of the hottest components back into the mix, rather than directly outside.

    One other issue is with rotating the PCI slots so that they are vertical. Yes, your cards will be vertically mounted with the added expense and mess of PCIe riser cables, but what's holding your cards in place other than the PCI bracket at the end of the card? From what I can see, your expensive GPUs (most likely expensive since you want to show them off) are only being supported by a small/thin piece of metal at one end. I've got GTX 780s right now, and there is no way I'd want them hanging from that little bracket.

    I really wish Tom's would show more pictures with all the mounted hardware installed. Especially with cases like this one, where there are multiple configurations, such as rotating PCIe openings. I would really like to see how two GPUs would look when the mounting is rotated and the cards installed with riser cables.