

🚀 Build Bold, Cool Smart — Own the Cosmos!
The Cooler Master Cosmos C700M is a premium E-ATX full-tower PC case featuring curved tempered glass panels and versatile interior layouts. Designed for enthusiasts and professionals, it supports extensive liquid cooling options with dual 420mm radiator brackets, customizable ARGB lighting, and advanced I/O including USB Type-C. Its modular design and superior cable management empower builders to create visually stunning, high-performance systems with ease.
| ASIN | B07H6MKSXZ |
| Antenna Location | Gaming |
| Best Sellers Rank | #757 in Computer Cases |
| Brand | Cooler Master |
| Built-In Media | Tower |
| Case Type | Full Tower |
| Color | Black / Grey |
| Compatible Devices | Various cooling systems, multiple expansion cards |
| Cooling Method | Fan, Water Cooling |
| Customer Reviews | 4.4 out of 5 stars 462 Reviews |
| Enclosure Material | CURVED TEMPERED GLASS, STEEL / STEEL |
| Global Trade Identification Number | 00884102047527, 04719512075036 |
| Hard Disk Form Factor | 3.5 Inches |
| Internal Bays Quantity | 1 |
| Item Dimensions D x W x H | 25.6"D x 12"W x 25.6"H |
| Item Type Name | grocery |
| Item Weight | 52.5 Pounds |
| Light Color | Any Color |
| Manufacturer | Cooler Master USA, Inc. |
| Material | CURVED TEMPERED GLASS, STEEL / STEEL |
| Model Name | C700M |
| Motherboard Compatability | Extended ATX |
| Number of Fans | 2 |
| Other Special Features of the Product | RGB Lighting, Curved Tempered Glass Panel |
| Power Supply Mounting Type | Bottom Mount |
| Recommended Uses For Product | Gaming |
| Supported Motherboard | Extended ATX |
| Total Expansion Slots Quantity | 8 |
| Total USB 2.0 Ports | 2 |
| Total USB 3.0 Ports | 1 |
| Total Usb Ports | 5 |
| UPC | 884102047527 |
| Warranty Description | 1 year |
J**E
Amazing, but expeensive
God d*** this case is expensive, but if you want complete control, a full tower, are an enthusiast, but don’t like the look a black metal box, then it’s perfect. This is the perfect example of “I’m getting it because I love it, not because it is in any way practical.” There are plenty of full towers at half or quarter the cost making them more practical, but NONE of them look this good IMO. PROS: - it’s beautiful - comes with amazing front io (4x3.0, 1x3.1 USB C) - comes with DRGB controller and fan controller (minimizes plugs and cables running to board), rgb on case looks amazing btw. - completely customizable. EVERYTHING comes out and can be unscrewed with basic tools. - super water cooler friendly (max 420mm radiator) - super easy to remove sides and get to what you need to get to. - amazing cable management options. CONS: - HEAVY. By itself, it’s like 30-40lbs. - Hard to find. No one really carries it. - accessories are hard to find. (Since no one carries it) - top RGB lights on work with front panel attached. So if you like the look of just the mesh, then you have to sacrifice the top rgb. They should have just ran another rgb cable to the top instead of whatever they did. - only comes with 2 radiator/fan brackets. There’s one on the top and one on the front, so you have to order another one if you want full control over water cooling, but no one sells the parts so you have to pick having top/front fans or mounting stuff to the bottom rails.) Honestly, I started unscrewing things then realized “oh, this comes out too?” And my 2 hour build turned into 10 hours. So just be ready to have complete control. Sometimes it’s overwhelming. Not trying to shill, i’ve just built in a lot of constraining cases where I spend more time figuring out how I CAN build it and less time on how I WANT to build it. This case does not have that problem.
F**O
Very well advance case
This has to be the best case I have ever own. Durable, very advanced with new features, great cable management, wifi6 and BT, my Gigabyte motherboard fits well, all the lights look beautiful, although it’s heavy you can still manage to carry, the doors are very accessible at all time, beautiful glass door because it seems I have no door so I could see inside clearly, the color of the case blends in with my office, it looks so good especially next to my old case, and best of all it fits so well with. Y system which is very fast: Ryzen 9 cpu Threadripper, Gigabyte board Master, 128 Corsair memory RGB, 1200 W Termaltake PSU, Nvidia 3080 GPU, M5 Hdrives, 14tb Gold WD HD, 2 customer LED cables for Motherboard and Graphics card, and all the extra cables it hides perfectly. Amazing purchase!!!!
J**T
A VERY GOOD FULL-TOWER COMPUTER CASE
The Cooler Master "Cosmos" C700M full-tower case is, to my eyes, a beautiful thing to behold - sleek, powerful design which is - admittedly - heavy but designed to be carried with its two handles at its top. Anyone looking to buy this case is more than likely familiar with assembling their own computer, and therefore able to figure out how best to install their components as they would like into this case, which allows a wide range of installation possibilities. I find it to be very quiet in operation, and its glass door allows easy access to the inside of the case for cleaning and inspection. This case also seems to be quite effective at filtering out dust, the enemy of all computers. I rate it highly for its design and quality of materials. The assembly-instruction diagrams which come with the case can be a bit daunting to interpret, so you have to rely on your own visual skills to figure out just what the possibilities are with respect to configuring the layout of your case to fit your needs. This size of tower case is essential for anyone using large, complex graphics cards like the NVIDIA GeForce RTX 2080 Ti I installed. I also like the way the power supply and its cabling is neatly mounted in a compartment below the main board and graphics card and hidden from view, yet is readily accessible. I am glad I did my homework by doing a Google search for "best computer tower cases for 2019," which came up with this particular case being listed as the #1 recommendation in the Full Tower category.
M**L
If you got the Cash!
I bought this case with little to no idea of a theme. Have to say, the case is pretty spacious. Pros: Spacious as hell. Definitely a good option for a tricked out Water Cooler case. ARGB is bright and the owner loves them. Build quality is amazing. Honestly, there aren’t any out of the box pros to say about this case. It does exactly what you’d expect it to do. Cons: Because of price tag, these are cons, otherwise it would just be nitpicks. No included GPU bracket holder, Light Panel, and RGB fans for an RGB case. Could been packaged with a storage box for Screws. All these things were included in their MC500mt which I got for 50% less. Also, be mindful of your eATX boards, the MSI creator x570 is just barely allowing the 24pin to snake through. Might be best to go with some custom PAU cables for better fits otherwise get ready to pray it’s flexible. It’s a good case though just one that, for its price tag, should have been given more bells and whistles when comparing it to cheaper cases.
S**R
Very Pretty, Pretty Heavy, and Somewhat Nonsense
At a price point of $600, I expect a case to be well thought out and not so wasteful. The case itself is awesome with slick details that took some craft, but the included drive bays are absurd and they may pose conflicts in staging your build. Cooler Master ought to be thinking this case will house a radiator, high-quality fans, 2.5-inch SSDs, and a motherboard with M.2s. But this chassis - with its beautiful façade - is built for an ATX motherboard and a stack of 3.5-inch HDDs. The included fans and fan/lighting controller will probably be thrown out by anyone spending this much on a case. Four HDD bays and an optical bay are likely to be recycled. Cooler Master specifications say that this case will accommodate an EATX board and 360 AIO cooler. But you cannot fit either without stripping out all the extra stuff loaded into this case. By the time I decided to return mine to Amazon, I'd been thinking a lot that this seems like a way they used the computer case exclusion to dump otherwise tariff steel. It is so heavy! The guy at the UPS Store had to shove it along the sheer carpet floor, shoulder low, leveraging the box with his lower leg. I returned this eye-popping case because there are conflicts between what Cooler Master says will fit, what I need to fit, and what they already stuffed into it. At this price point, I think it is a clear decline. Please decline before Amazon ships... unless you really just want an ATX with a RAID HDD array in a BIG chassis that will surely impress your officemates.
N**8
A terrific case for full-scale PC systems!
If you are building a "serious" system, where airflow and adequate HDD space (5 drives in my case) are important, along with lots of clearance around an EATX-sized MB, and a larger liquid cooling capability, then this case is for you. You'll need good mechanical acumen and dexterity to to go about it, as always. A few things to consider: 1) The newer 1200 W power supplies with side-mounted output power connections will not fit in the included power supply shelf - you'll need to mount such a supply without that shelf and provide support underneath at the inner end in order to counter the cantilevering that results. Again, not a problem if you are mechanically adept. 2) Mounting an optical drive at the top in the front end will significantly block one of the top fans. I elected to not keep such a drive permanently installed. 3) A 420 mm CPU liquid cooler frame might have an interference fit with the lower front edge of the optical drive mounting bay, should you go that route; OTW, a 420 mm cooling frame with 3 fans fits in the front quite nicely. 4) Fully loaded and ready to go, the final assembly will be HEAVY compared to what you are probably used to in more compact configurations. 5) CoolerMaster refers obliquely to firmware for the RGB LED/Fan board in the case manual, but you'll find no such thing on their website, go figure!
S**.
Beautiful case but Giant
Love this case although I didn't know that it was gonna be this big looked like the delivery guy was delivering a refrigerator lol the lighting looks amazing although sometimes its a bit buggy but works as it should mostly had this case for 3 years now and its holding up well the removable side panels are really high quality and the tempered glass panel feels high quality very easy to build in this case with a enormous amount of room inside it says it fits a E-ATX motherboard but mine was a tight fit (Z390 Aorus Xtreme) Overall very happy with this case but the high price tag at 500 makes it a tuff buy but worth it imo for the great build quality.
E**F
~$600 Case With Exploding Controller and Underpaid Lethargic Customer Support
TL;DR: Systemic RGB / Controller issues known and ignored by Cooler Master. CM support will lie about if it is a known issue. Use a SATA splitter, read the manual, do everything you're supposed to do and then still have to pray nothing explodes so you don't have to rely on CM technical support. Price is sky-high for a crap product. Don't waste your time or money. I'll start off by saying I bought this case for $591.47 net. Before taxes it was ~$558. So a roughly $600 case with components that will smoke at first boot. The fan and rgb controller for the C700M is /garbage./ Having gone through two of them now despite Cooler Masters technical support assuring me that the wiring configuration was correct. Note, in the picture I was using the multiple connections of a single SATA cable daisy chained onto the controller. At the point of second failure, I started asking questions regarding what might be wrong. I sent them the pictures of the damage, I inquired about various possible causes, I asked to confirm how I should be testing to ensure PSU/cables/MOBO is fine. The responses from CM were "unengaged," to say the least. This is NOT necessarily their fault; I understand if you're paid the same as someone at a Home Depot you probably aren't prepared to deal with your employers components regularly failing. But at the very least, I shouldn't have to beg for a reply to my emails / questions. Even if the response is "we don't know," that's better than ghosting me and acting like I'm annoying you. When you finally do get them on the phone, they will straight up just lie and say this isn't a common issue. Looking through the Amazon reviews I see that this definitely is a well known issue. For the third controller I ended up buying a multimeter to verify my ADD_GEN, USB, CHA_FAN motherboard headers were all fine, as well as a SATA>Molex adapter to test the SATA cables (which also returned as fine). I also bought a SATA splitter since it's the only thing I could think was wrong other than potentially a grounded wire somewhere in the case. Powering on the PC worked without smoke at that 3rd time. I began explaining to tech support I'll start plugging my components back in one by one and testing the same way, hopefully with nothing bad happening. A logical next step. In the middle of explaining it, CM technical support just hung up on me. I guess they figured since now the controller isn't literally exploding, they don't have to listen to me anymore?? I bought a ~$600 case, I'd expect customer support to be on par with that price. Other companies like Corsair give you top-of-the-line customer support for products that are half that price. This is a ~$600 case, it should last at least 6 years if not more. I've had a ~$175 Roswell case last me for over 5 years. If something goes wrong with this case now, how on Earth can I expect Cooler Master Technical Support to even do anything about it knowing they'll act like this? The whole time I'm thanking them when they actually do respond, apologizing and saying I empathize with their position, just being polite and cool with them -- their response is to be rude, uncaring, and unhelpful. Looking at other reviews here I can see that they literally don't fix this problem. They'll send "repair kits" and replacement parts that will band aid and then continue to fail within a few months down the road. Horrid. The quality of material is obviously garbage since the "material" can at any moment short out and catch on fire. The case itself is easy to assemble, and the cable management is nice, but with the controller causing this much grief "assembling" the PC has been a nightmare. The style is actually really beautiful, and is exactly what I wanted for this build, but style means nothing when the product is hazardously malfunctional and customers are treated like trash. I'll be getting my refund from Amazon and going with a case merchant that actually cares about whether or not their product works.