Well guys I went back to air. The H50 was pretty neato mosquito but being an air man myself, the thought of having liquids coursing through my system all day just didn't sit well. Granted, there has only been one reported incidence of leakage as far as I know, I just wanted some peace of mind especially since I typically leave my computer on 24-7 downloading. Public domain stuff from the Library of Congress, of course.
I had looked at the usual suspects of high quality air - Noctua NH-U12P, Venomous-X, Ultra-120, Megahalems, True Spirit - when I kept coming across this "Titan Fenrir" dilly that was holding its own at half the price.
First let me be clear that I had no delusions about the H50. I bought it knowing it would not be a substitute for legit water. I bought it for a quiet solution that happened to keep my i7 920 D0 within reasonable temps at tame (3.8 @ stock vcore) overclocks. Based on this criteria, I'm pretty stoked on the Fenrir!
I definitely had to move things around though. For starters, with the EVGA X58 SLI LE having the socket so friggin close to the top, I had to nix the top 140mm. I decided to ghetto hack it (read: zip ties) to the front. Positive pressure city, I know, but I figure the 140mm at the bottom wasn't going to be moving much air what with 4 HDs right in front of it.
Along with the 140mm, I had to relocate the CCFL goodness too. So what do you with a 12" white rod in an already crowded Scout? Electrical tape the crap out of it and bury it in an orgy of sleeving, of course lols.
I've only been able to put the Fenrir through a couple thermal cycles but it's definitely kept the leash on the 920 at 3.8 with Prime65 full FFTs topping out at 75C vs 70C with the H50 (same thermal paste, single Scythe S-Flex in push, no mods). I'm idling right now in the low-40s same as the H50.
The db's are what's surprising me. I figured the Fenrir fan would surely out-db the H50. No dice. Right now it's chugging along at 1k RPMs and I can't hear enough to even notice. Under prime it cranks up to 2k+ and still hardly noticeable.