Everything you listed will work. 

Will corsair h100 fit on alienware area 51 alx?

Not 100% sure but I think it will. I do know a double 120 will fit but that one is 122. I can't say for sure because of the extra 2mm.

I see. I guess ill have to go buy it and see if it fits. And any silent fan would you recommend from the back? 92mm?

Hey Dextroz let me know if it does fit. Thanks for the reply btw.

I see. I guess ill have to go buy it and see if it fits. And any silent fan would you recommend from the back? 92mm?

I bought a Scythe Gentle Typhoon 92 fan for mine. It moves a lot of air and you can't hear it. Get one of them or a Noctua if you want a good fan that is quite.

Hey Dextroz let me know if it does fit. Thanks for the reply btw.

I just went to Frys and bought the Corsair H100. It does fit perfectly but the screw holes doesnt match. Well not all them unless if you put the radiator in the middle then only 4 screw holes will match. So to sum that all up Corsair H100 wont work for Alienware Area 51/ALX. I mean not that it wont work but you can only screw 4 holes instead of 8 lol.

I see. I guess ill have to go buy it and see if it fits. And any silent fan would you recommend from the back? 92mm?

I bought a Scythe Gentle Typhoon 92 fan for mine. It moves a lot of air and you can't hear it. Get one of them or a Noctua if you want a good fan that is quite.

The Scythe Gentle Typhoon is out of stock or discontinued. I might have to go with Noctua NF-B9- 1600 92mm at Newegg. The liquid cooling fan is a bit loud and a bit hot on top of the vents. Is that normal? My cpu is overclock to 3.6ghz. CPU Pump shows 1300+ RPM.