Blue Cooling MPP85W Waterblock

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SUMMARY: An interesting entry from a new watercoolng company.

Blue Cooling

Inside

Apart

Parts

Anchor

The good guys at Blue Cooling were nice enough to send a sample of their peltier waterblock, model MPP85W. Blue Cooling is a new entrant to the watercooling market.

The fan is an Everflow Model #R127015DU – a 70 x 15mm unit rated at 26 cfm @ 4200 rpm. I found it to be tolerably quiet – I measured its noise at 62 dBA with a Radio Shack sound meter 8″ from the fan’s intake, substantially less than a Delta 38 (about 69 dBA). It’s also safe to use a motherboard fan header.

In summary, a fairly conventional aluminum extrusion heatsink with a very secure and easy to use clip.

THE TEST

The SLK600 was first tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences. I then tested it on an Iwill KK266+ and Shuttle AK31, modified to read AMD’s on-die diode, as an example of what users might see on their systems.

TEST RESULTS – CPU Simulator

Heatsink
Die Temp
Ambient Temp
Delta
C/W
SLK600/YS Tech 26 cfm
45.5 C
20.2 C
25.3 C
0.33
SLK600/Delta 38 cfm
43.7 C
20.0 C
23.7 C
0.31
SLK600/Delta 44 cfm
38.8 C
20.2 C
18.6 C
0.24

TEST RESULTS – Motherboard
CPU/Motherboard

CPU Die Temp

Ambient Temp

Delta

C/W

CPU Back Temp

Palomino 1200, Iwill KK266+

31.9 C

19.5 C

12.4

0.23

33.8 C

XP @ 1467, Shuttle AK31

31.5 C

20.2 C

11.3

0.21

35¹ C

¹In-socket thermistor per MBM

Delta = CPU temp – Ambient Temp
C/W = Delta / CPU Watts

Interpreting C/W: For every watt (CPUw) that the CPU
consumes, the HSF will limit the CPU’s temperature rise to (C/W x CPUw)
plus the temperature at the HSF’s fan inlet. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that CPU temp will increase 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.

Die Simulator results place the SLK600, with the ultra-noisy Delta 44, in the top rank of heatsinks (Heatsink Ranking). With the more tolerable YS Tech, the SLK600 ranks among the best of heatsinks tested.

Interestingly, the difference between a relatively quiet YS Tech 26 cfm fan and the noisier Delta 38 is not that great. Users might consider using a rheostat on the aggressive Delta 44 or Delta 38 to moderate noise as requirements dictate. For users seeking superior performance at low noise levels, the SLK600 with a 26 cfm fan looks promising.

CONCLUSIONS

Thanks again to Blue Cooling for sending this our way.

Email Joe

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