Two fan heatpipe – Joe
SUMMARY: Very good performance, moderate noise.
The good guys at Thermal Transtech were nice enough to send the TTIC-NPH-201 heatpipe for a test spin. This is a two fan heatpipe; the major difference from other heatpipes I’ve seen is that the heatpipe is fairly large – it measures 25.4 mm x 100 mm long. There are 34 fins arrayed along the heatpipe, with two fans for cooling (push-pull configuration).
The TTIC-NPH-201 tested had two fans – one 70 x 15 mm and one 80 x 25 mm thick; the 70 x 15mm ran at 3730 rpm while the 80 mm ran at 4092 rpm. I found them to be moderately noisy – I measured noise at 65 dBA with a Radio Shack sound meter 8″ from the fan’s intake, less than a Delta 38 (about 69 dBA). You can use motherboard fan headers for each.
The heatpipe is clearly visible through the copper fins:
The base is not particularly well finished:
When I ran my nail over it, I could feel ridges; a good lapping could improve results somewhat.
The TTIC-NPH-201 was tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences.
| Heatsink |
Die Temp
|
Ambient Temp
|
Delta
|
C/W
|
| TTIC-NPH-201 |
40.9 C
|
21.5 C
|
19.4 C
|
0.28
|
C/W = Delta / CPU Watts
