What's the difference between these cpu water coolers?

[Tweed]

https://pcpartpicker.com/parts/compare/corsair-cpu-cooler-cw9060020,corsair-cpu-cooler-cw9060021ww/

Corsair H100i gtx

 

[Gam3r01]

280mm variant vs 240mm.
One has two 120mm fans, the other has two 140mm fans (and requires the mounts for them as well on the case)

 

[USAFRet]

What about those specs is not clear?
CFM, fan speed, noise level, size, price.

 

[Tweed]

My case is the InWin 805. Does it matter which one I get? Which do you recommend and why? Performance is the same?

 

[USAFRet]

My case is the InWin 805. Does it matter which one I get? Which do you recommend and why? Performance is the same?

"Which one" depends on why, the size of the case, and the rest of your parts.

 

[Tweed]

http://pcpartpicker.com/p/cy44XL

 

[Dark Lord of Tech]

http://www.corsair.com/en-us/cooling/cpu-coolers
CPU Coolers