Performance

The system being used to test the heatsink is as follows:

CPU:	Intel E6850 Core2 Duo
Clock speed:	9 x 333 MHz = 3.0 GHz, Memory at DDR2-667
Motherboard:	Asus P5W DH Deluxe
Memory:	2 x 1GB G.Skill F2-6400PHU1-2GBHZ
Video Card:	HIS HD 3870X2 PCI-e
Harddisk:	200 GB Maxtor 7200 RPM IDE
Power Supply:	Antec 500W
Software:	Windows XP Pro SP2, Catalyst 8.1

Ambient temperature was kept to 22º Celsius (+/- 1 degree) and was measured by a standard mercury thermometer. The rest of the watercooling system used is listed below:

Pump:	Danger Den D5 (variable speed: pump set to "5")
Radiator:	Swiftech MCR320-QP-K
Fans:	3 x Yate Loon D12SM-124B
Tubing:	Tygon 3603 1/2" ID
Fittings:	1/2" OD barbs

At stock speeds the EK Water Blocks EK Supreme manages to keep the system cooler than any of the other waterblocks tested so far. A full three degrees Celsius cooler under load is extremely impressive.


With the speed and the voltage increased, the EK Supreme continues to outshine the rest of the contenders. This time, the margin grows to an impressive four degrees Celsius under load.