Would another rad help?

[Fuganater]

So I have a 2x140mm Phobya G Changer rad cooling my i7 2600k and 2x GTX 560 Ti's. I was thinking of adding a single 140mm rad to the back. Would be a cheap way to get a cooler system.

My water temp gets up to about 40C when everything is folding. My 560Ti temps are 44/41C when folding and my i7 is 62C. Ambient temp is between 22 - 28C. I make it colder when I'm not in the office.

Air temps inside the case are (as of this writing with the AC OFF):
25C intake for the front 200mm fan
31C and 35C for the top exhaust 200mm fans
30C exhaust for the rear 140mm fan

And apparently SpeedFan says my CPU is 128C and Speecy says my Mobo is 128C... but 3 other apps say my CPU is 62C.

Should they be running cooler? Would the 140mm single rad help a few C?

Thanks for the help.

[Kayin]

It might, but it'll almost certainly get you a lower dT. That's worth the upgrade right there.