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Question: What are the fan sizes, it says supports so many fans but doesn't list which sizes? please help, I am getting this case...
Document: (1) There are too many LED cables to control LED lights for fans. Remember that you don't get transparent side panel for this casing. So what is the use of having all the LED light control cable. (2) This case claims that it is SSI EEB form factor compliant. Unfortunately when I installed an Intel Server Board S2400GP2, the motherboard housing tray short of 1 screw position to hold the motherboard in position.
Easy access. I especially like the removable door panels and the open access to the back of the CPU heatsink bracket. Changing CPU cooling solutions won't require dismantling the system and removing the system board. Fan connections: I have never seen so much space for case fans. It is study and has enough space and options for just about any system configuration you could want. It even has built-in power plugs for fan LEDs. Fan speeds are controlled via a control panel with 3 speed selections.
This case will havew more than enough space to fit whatever build you are doing!The built in fans work incredibly well and I have never seen better cable management!The only bad things are that I had to cary this 50 lb case up 3 floors and back down. It is a giant, and I had to put it in the passenger seat with a seatbelt on. If you are thinking about getting one, this would be the case, as it will be very hard to find a better case.
Ordered this case for my company server. It is spacious with plenty of HDD expansion option. Finishing is of high quality and technically well designed. Cable management is easier than Cosmos S. Giving it some patient and time, you can manage the cable route nicely and professionally. Ventilation is excellent. I have plenty of Cooling Fans installed. (Noise is not a problem as I used it in Server Room).
I received my Cosmos II and it is freaking awesome. I love it. If your looking for a tower that you will just throw motherboard after motherboard in it then I'd say this will be your last tower for a very long time. Definitely worth the money. This tower can support two water cooling systems one at the top of the case and one on the bottom where the double fan cage is if you remove the drive bay and its rack from the very bottom of the case.
Hands down the finest case I have ever purchased, and I've bought some good ones over the years. Like everyone else stated, it's large. My son's godmother saw this beast and said "Oh cool, a beer fridge." There have been a lot of other reviews previous to mine, so I'll only state what I found interesting during the build:There are a LOT of wires, many (probably most) of which you don't need. Don't let them intimidate you.
This is by far the best case I have ever owned. I usually don't write reviews because I am incredibly lazy but this case is so great I just had to. I've owned mostly Corsair cases and was a big Corsair fan boy from the beginning of my computer enthusiast life style. Cases I have recently owned from Corsair are the; 900d, 800d, 750d and 350d. As well as several Thermaltake cheap cases.
Ok, maybe not. But here's what it will do.Eat up anything and everything you throw at it. There isn't much you are wanting if you have a lot of junk to keep in the trunk.I wanted a case that would handle 15 or more HD's and this one does - with a little addition.Cooler Master makes a 4 in 3 HD bay converter that takes the 3x 5.25 optical bays and turns them into a 4 HD with a blue LED fan that matches up nice.
Everything works so nice and cleanly inside this case. It has room for everything, and enough cable management to make wires almost invisible on the motherboard side. It comes with lot of fans and has room for more. I am running the water coolerThermaltake Water 2.0 Extreme/All In One Liquid Cooling System CLW0217on the top of the box with the fans on the outside and radiator on the inside. It seems to be working fine and temps are low. Cooler Master it is. Very cool.
Bought this case for my new Intel x79 build. The case itself provides enough space for all my parts and even the two radiators  (one 240 and one 360). The construction itself is very sturdy and it does not feel weak of flimsy at all. My only issues with this case are that I would have liked to have the option of a factory installed side window and also the led controller only works certain cooler master fans. Would have liked to have more options as far as led fans are concerned.
Answer: Comes with - Front: 200mm x 1, Top: 120mm x 1,  Rear: 140mm  x 1, Bottom HDD: 120mm x 2.  I did however add two optional top 120mm fans to increase the airflow out of the case.  There are three other optional 120mm locations: 2 Side fans and 1 Mid HDD.