Sleeth 1 Waterblock

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Waterblock Test – Joe

SUMMARY: OK choice for non-aggressive CPU cooling with moderate-high power waterpumps.

Sleeth

The good guys at PCCooler sent a their Sleeth I waterblock to test.

The Sleeth I features

  • Quick release fittings for 8mm and 10mm tubing
  • All copper construction
  • Mounts for Intel P4 and AMD Socket A/K7

The Sleeth features a mounting system which concentrates all force on the center of the CPU – much preferred to other mounting schemes. Note also that it ships with two sets of fittings for 8mm and 10mm tubing:

Fittings

The base appears well finished:

Base

There were no polishing marks apparent to the touch.

The mounting system includes mounts for Intel P4 and AMD Socket A/K7 CPUs:

Parts

THE TEST

The Sleeth I 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

Sleeth I

0.24

1.04

29.9

NOTE: These results are NOT comparable to tests done by others.
Unrounded data: 0.240 C/W with 0.0007 std dev.

Test Results indicate that the Sleeth I’s pressure drop (or head loss) across the waterblock is on the high side; flow resistance such as this means that the Sleeth I requires a moderate-large waterpump to maximize performance, depending upon how restrictive other components are in system.

I found that reducing flow to 0.5 gpm resulted in a performance decrease of about 0.7ºC and increasing flow to 1.44 gpm resulted in a gain of about 0.4ºC.

For a comparison of the Sleeth’s performance to other waterblocks tested to date, see Overclockers.com Waterblock Test Results.

CONCLUSIONS

The Sleeth I Waterblock is an OK choice for non-aggressive CPU cooling. Flow resistance is on the high side and performance is fair; the Sleeth I will require at least a moderate power waterpumps (300 gph) for best performance, as long as other components do not unduly restrict waterflow.

Thanks again to PCCooler for sending this our way to test.

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