Rad for SLI configuration

Hello all,

I've recently upgraded my system and now have 2 6600GT on a Asus A8N-SLI with a 3500+
I want to watercool the gpu's, the NB, the cpu and the mosfets.

My doubt lies on the radiator:should i choose a BIP-III or a BIPII or a BIXII?
I have from my previous system 2 BIP (120), and don't know if they can handle the heat.
What's your opinion?

Maybe ask it to Rosco. He's the boss of Water cooling. Nice configuartion

It depends if you overclock or not, if you want silence, perfs... 2 BIP are enough for silence and honnest perfs. BIP3 should be the best choice to keep very good perf and silence (3 undervolted fans) because it's thinner than BIX2 so a bit more efficient with slow fans (BillA made some measurements on Procooling). But a BIP3 is longer (+pricey) so if you can mount it and have the money, go for it
The difference on water T° between the 3 rads should be about 2-3°C IMO under heavy load (depends of fans).

Why not trying with your current radiators ? 2 BIP would give approximately the same performance as a BIPII, so if you have to upgrade, i think that a BIXII would be the best choice, but i'm not sure the gain will be worth the price you'll pay

Well, overclocking (are you kidding?) - sure, although this board isn't like the DFI.
There is also the space factor (didn't want to cut the top of the case - lian-li PC-71), so i was thinking:

1- either using a BIP for the 2 x 6600Gt+NB, and the other BIP for the CPU+mosfet with a MCRES-525 and a DDC,
2- buying a bigger radiator.
3 - Fans: maybe Nexus 120mm or the Coolermater aluminum 120mm (1200rpm/56.10CFM)

Another question: even with the reduced thickness of the BIPIII, isn't there a pressure loss, since the water has to travel a longer area, than with a smaller radiator?

My idea of placing the radiator(s) is like this one, only a bit lower, near the base of the case:

Longer rad = bigger pressure drop, it's an evidence
The case seems to be very small to put a BIP3 inside , a triple fan rad is quite enormous

Rosco,
It's not the case in the pic., but a Lian-li Pc-71.
The picture was just to show how i was planning to mount the radiators.

PC71 = perfect for the BIP3, but better on the top i think.

Mastaba,

Well, that's wasn't exactly my idea, especially because this case is very expensive...

Rosco, I managed to get my hands on a Corsa? radiator - it's a Harrison but with half the thickness of the normal Big Momma,(all the other dimensions are the same) maybe it's a little Momma
The only question is if it can handle all the blocks (cpu+ 2x gpu + NB + mosfets) with a similar performance of the BIP II, seeing that they ware made fot delta Tº far higher that the ones present in an ordinary WC loop.
What are your opinions on this?

i think you take your rad in an OLD corsa isn't it ?
less wider, so more air flow rate with low speed fan...good rad
sorry for my poor english

Yep, your rad should be enough IMO to have good perf. Anyway, you aren't at full load all the time, so no problem for water temp . "Normal" Big Momma has a thickness = 5 cm.

Ok, thanks all for your replies.

vous maitrisé l'anglais waaouw