Overclockers

Kit test – Joe

SUMMARY: One of the more interesting watercooling kits – OK performance.

The good guys at Global Win were nice enough to send the Jefi watercooling kit for a test spin. This is a very innovative watercooling kit – one that the “bong” watercoolers in our audience will appreciate.

Key features include:

• Mounts for Intel P4 Prescott, Intel P4-478, AMD Athlon 64 XP3400+, AMD Athlon XP 3200+ CPU
• Glass reservoir
• 3 watt 120 volts waterpump, rated 180 lph
• Temperature controlled fan 2000 – 4000 rpm, 27 to 55 cfm, 20 – 41 dBA

The reservoir included in the kit is made of glass:

The fan (temperature controlled) assembly features a number of “pegs”:

The fan assembly sits on top of the reservoir:

Once filled with water, there is a floating aluminum ring unit:

The aluminum ring sits on the plastic floating donut:

And here is where the evaporative cooling takes place. Water circulates around the fan unit and drips down the pegs underneath the fan:

The aluminum ring spreads water over a large surface area; the fan directs air over the aluminum ring, evaporating water – hence this is a very compact evaporative watercooler.

The waterblock is an aluminum body with a copper base:

The copper base is adequately finished:

There were no gross finishing marks or ridges, although a good lapping will increase performance a bit. The mounting clips are great – they center mounting pressure over the center of the CPU core, where it should be.

The waterpump is rated at

3 watts, 120 volts, with a flow rate of 180 lph. There is a rheostat

included with the kit as well. The parts that ship with the kit

include Socket A and P4 mounts and a glass thermometer to mount inside the reservoir.
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The Jefi was tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences.

Fan noise was very low, as were rpms. Pump noise was minimal – if you listened real hard, you could hear a slight hum close up. The only other sound was a very slight dripping noise. Overall, under normal use, this is a low-noise system.