Originally Posted by cyclometric
Ran 4 tests in OCCT, 30 minutes each time with the following setups and results:
With Shroud in Push+Pull
Intake: Push Fan>>Rad>>Shroud>>Pull Fan
Max Temp: 46
Exhaust: Pull Fan<<Rad<<Shroud<<Push Fan
Max Temp: 49.5
Without Shroud in Push+Pull
Intake: Push Fan>>Rad>>Pull Fan
Max Temp: 45
Exhaust: Pull Fan<<Rad<<Push Fan
Max Temp: 49
I just realized that I screwed up the test for Shroud/Exhaust. I put the shroud between the Push & the Rad, and it should go between the Pull Fan & the Rad. Will retest and expect better results with that setup, but so far the winner is No Shroud, Intaking air.
Whenever running H50 fans as intake, I would flip the top front fan to exhaust, also, so the air at the top of the case should be a straight shot over the radiator and directly out the front, the only obstacle being the Corsair Heatsink itself.
I know some have said the shroud wouldn't be worth putting on, but I never imagined I would get cooler temps *without* the shroud at all.
I'll rerun that Exhaust/Shroud test and report back again.
OK, I reran the Exhaust test, using the shroud between the pull fan and the rad, and I also received my second shroud in the mail today, so I ran both intake and exhaust tests with shrouds between both the push & the pull fans -- the results astounded me, but it looks like I am going to be removing both shrouds and running as intake, push pull (next 4 tests: one fan only, push intake, pull intake, push exhaust, pull exhaust).
All of these tests were conducted with a Xigmatek Dark Knight fan on full speed (2000rpm, 89cfm) on the outside face of the rad, and an ACRyan Blackfire4 fan on full speed (2000rpm, 79cfm) on the inside face rad, flipping the fans in place from intake to exhaust & back, depending on the test.
No Shroud: 49
Pull Shroud: 49.5
2 Shrouds: 49
No Shroud: 45
Pull Shroud: 46
2 Shrouds: 48
I guess that guy who said putting a shroud on won't do any good was more right than I expected -- the shrouds on my system actually raise the temps. I wonder if that speaks to the low static pressure of my fans, more than being shrouded... Now I think I'm at at the point where only better fans will improve my temps.