I did 24/7 mode OC & tests this morning - and what can I tell:

1) Watercooling is awesome! Sorry if I sound too excited but this has by far exceeded my expectations.

It took ca. 6h to bleed, there is

I'm totally hooked now

2) i7 980X is great OC'er!
Success in second attempt @4.43Ghz @1.36v load 1.09v idle (by offset 0.13v)

3) OC Temps (I don't even post stock temps, so low there's no point
Ambient: 17.8C
Load OC CPU (4.43Ghz @1.36v) Max Water: 25.2C
IBT Load Max CPU Temp: 53C (max on single core 57C)
Prime95 Load Max CPU Temp: 57 (max on signle core 59C)

Load OC GPU (850Mhz @1.075) Max Water: 28.8C
Load OC GPU (850Mhz @1.075) Max Temps (Vantage): 45C
Load OC GPU (850Mhz @1.075) Max Temps (Furmark): 51C

Flow: 199 l/hour

4) Fans:
My oh my. Those Apache push some serious air.
I know GT are "industry standard" and this is fairly new boy on the block, but if you can, try it.

5) Problems:
Flow sensor seems to give clicking noise, not too much but I can hear it.
I wonder if I got faulty one - this would expect low flow reading (I set it to 169), I reckon with this flow I would not get these temps with all this gear also flow estimations suggested ca. 2x flow that I got.

But anyway even with this I'm very, very happy with temps so all good!

IBT quick pass after couple hours of Prime95


GPUs @Stock, PhysX off


GPUs @850Mhz Mem 1950Mhz @1.075v


Is it result #16 in ORB for GTX 480s ? :-)

Next week I'll try do all @950 ~ trying to get over 44K but right now, after week of bulding - time to play!