Maximum PC

Hey guys,
Well.. I had typed out a very detailed description of my case circulation setup, however as soon as I clicked the "SUBMIT" button, a network notification popped up stating "ethernet cable unplugged."
(Just went out for a smoke to chill out an regain my senses lol)

I'll be making it shorter now..Here is the just of it in point form..
Upgraded to Antec 900 case
Upgraded air-cooling to a Corsair H50 water cooler
Upgraded motherboard to an Asus Maximus Gene 3 (Micro-Atx)
Upgraded GPU setup from single GTX 280 -> SLI'd GTX 280's

*Due to increased GPU temps (being both of the 280's have NO gap on micro-atx mobo), added a PCI Dual Fan Vantec device to the BACK of the Antec case and directly behind both GPU exhausts.(In hopes to assist both GPU's heat removal)
*New Antec 900 case includes a 200mm exhaust fan at top+back section.

Reason of inquiry?
1) Never have had any other form of exhaust from a computer other than the stand back+rear standard. The new H50 setup injects cool intake air from outside of the case to optimally cool the radiator.
2 The new SLI'd 280's generate alot of heat which is hard to exhaust for those who have micro-atx mobo's. (Both GPU's sit COMPLETELY together on a mobo such as this.)
3) Air is now being exhausted from bottom PSU + Forcefully exhausted from Hot GPU's via Vantec + exhausted from top 200mm fan. (As opposed to the typical rear/top exhaust method)

A- PSU cables consume this area and restrict airflow
B- Two 120mm fans in isolated tunnel to force more cool air into GPU's
C- This is just to confirm the side of the case has one 120mm intake fan
D- Two 120mm intake fans and H50 radiator inbetween to cool CPU (push-pull air). Aswell as 200mm exhaust fan above.

Paint.exe diagram I composed to give you a visual. (Hope it is clear enough)



Tips/Advice appreciated peeps

Honestly that's a pretty well-thought-out setup. Cleaning your cables up might make a difference. I don't know the 900 that well, but I'm fairly sure there are decent cable routing options. Is there room behind the motherboard tray to route cables? If so, try to make use of that as much as is humanly possible- removing cables that restrict airflow is one of the easiest ways to improve case cooling. Additionally, I know older 900s don't have a lower vent, but I was under the impression that newer ones do have a PSU vent. If that's the case, I would suggest flipping the PSU in the other orientation, as that will stop it from competing for fresh air with your hot GTX 280s. Basically all modern bottom-mount PSU cases have that vent, and it certainly helps. Otherwise, it looks good to me. Are your temps acceptable?

"D" is actually pulling in warmer air that has been exhausted by the GPUs and PSU. I doubt it's getting any cooler air than it would be by exhausting case air, and it's going opposite of the general airflow of the case, disrupting the "flow" of air through it.

If you want to get fresh air across that rad, you could try putting it in "B" (maybe put A on top and B on bottom for space?) and then having a regular exhaust fan at "D".