EK-WW block for P4 and OPTERON

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Waterblock Test – Joe

SUMMARY: OK choice for CPU cooling.

EK

EK-WW block for P4 and OPTERON

I received a waterblock from the good guys at EK Water Blocks to test out – the EK-WW (WW = Wave Water). This product is not currently available outside Slovenia but could change.

The EK-WW features

  • Chrome-plated barb connectors for ½” ID tubing
  • Lucite Top
  • All copper base

The interior design is one of the more interesting ones I’ve seen:

Inside

Pic coutesy of EK Water Blocks

You can see where the “WW” comes from – lots of twists and turns to enduce turbulence.

The base

Base

appears polished, although I could see slight ripple patterns in it.

THE TEST

The EK-WW was tested using the CPU Die Simulator and Waterblock Test Rig.

WATERBLOCK TEST RESULTS

Test Conditions: Inlet Water Temp: 28.5 C; Mounting force: 15 pounds; Heat Load: 70 Watts.

Plot
Waterblock

C/W

Pressure Drop – psi

Pressure Drop – inches H2O

EK-WW

0.17

0.63

17.4

NOTE: These results are NOT comparable to tests done by others.
Unrounded data: 0.172 C/W with 0.0011 std dev.

Test Results indicate that the EK-WW’s pressure drop (or head loss) across the waterblock is moderate.

I found that reducing flow to 0.5 gpm resulted in a performance decrease of about 1.8ºC and increasing flow to 1.5 gpm resulted in a gain of about 0.7ºC.

For a comparison of the EK-WW performance to other waterblocks tested to date, see Overclockers.com Waterblock Test Results.

CONCLUSIONS

The EK-WW Waterblock is an OK choice for CPU cooling, but with moderate flow resistance, the EK-WW needs a waterpump of something like 300 gph to function effectively. Other components, such as a radiator or GPU block, will add to system resistance, increasing the waterpump requirement.

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