help - water cool - Intel Core 2 Quad Extreme

Hi there,

I am going to build myself a water cooled PC, I quite new to this method, and would very much appreciate an experts opinion.

The CPU is a Intel Core 2 Quad Extreme Edition QX9650 "LGA775 Yorkfield" 3.00GHz 1333FSB……

And to keep it cooled I am thinking of using:

1 x XSPC RS360 120mm Radiator (attached to the top of Coolermaster RC-1100 case)

3 Fans attached to Radiator
- Dimensions: 120 x 120 x 25mm
- Rated speed: 2200 RPM ±10%
- Air flow: 88.00 CFM

and water pump + tank: 750 lph:
(http://www.overclockers.co.uk/showproduct.php?prodid=WC-011-XS)

Do you think a single radiator would be enough? Would stacking 2 layers of 3 fans onto the single radiator make much difference?

I have considered using external cooling methods, but wanted to try and keep all the cooling contained within the single case.

Many Thanks.