TTIC-NPH-101 P4 Heatsink

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Two fan heatpipe – Joe

SUMMARY: Excellent performance, fairly quiet.


Weight: 717 grams ex fans

The good guys at Thermal Transtech were nice enough to send the TTIC-NPH-101 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 heatpipe is clearly visible through the copper fins:

Heat Pipe

This is the Socket A version, but the heatpipe is the same.

The heatsink mounts to the motherboard using a backing plate:


To mount it, you need a Phillips head screwdriver to reach the mounting screws in each corner:


The bracket mounts to the back of the motherboard and is a snug fit. The screws can only tighten so far, so there is no real danger of unduly flexing the motherboard. Overall, a good system.

There are two 70 x 15 mm fans spinning at 3622 and 3733 rpm. I found them to be tolerably quiet – I measured noise at 59 dBA¹ 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 headers (3.4 watts each).

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.


I tested the TTIC-NPH-101 on an Acorp 4S845A motherboard with a modified P4 1500 to read CPU case temps.

TEST RESULTS – Motherboard

CPU Case Temp

Ambient Temp



MBM Temp


28.9 C

19.7 C



26 C¹

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