Heatsink test – Joe
SUMMARY: An excellent choice for P4/K8 cooling.
The good guys at Thermalright were nice enough to send their XP-90 P4/K8 heatpipe heatsink for a test spin. In contrast to some heatpipes I have tested, the heatpipes are soldered to the copper base – some used thermal paste instead, with performance suffering as a result.
Mounting is straight forward – ther are two clips which engage the P4 retention bracket. The preferred mounting procedure is to engage the two clips at the back end of the heatsink and then rock it forward toward the RAM slots to engage the retention bracket. There are parts for a K8 barcket as well.
The base is well finished:
When I ran my nail over it, I could not feel or hear any ridges. Note also the relative elegance of the design – a base, heatpipe and fins; this is not a heavyweight by any means.
Parts that ship with the unit allow for P4 and K8 mounting.
The Thermalright 90 mm P4 Heatpipe was tested on an Acorp 4S845A motherboard with a modified P4 1500 to read CPU case temps. For testing, I used 90 mm Vantec Tornado – I varied rpms to give a noise and performance range. Thermalright recommends using a Panaflo #FBL09A12M fan – this is a 92mm unit that specs at 2450 rpm, 48 cfm, 30 dBA.
| Motherboard |
CPU Case Temp
|
Ambient Temp
|
Delta
|
C/W
|
MBM Temp
|
| Vantec 4821 rpm, 76 dBA² |
34.1 C
|
26.7 C
|
7.4
|
0.13
|
31 C¹
|
| Vantec 4035 rpm, 72 dBA² |
34.4 C
|
26.6 C
|
7.8
|
0.14
|
31 C¹
|
| Vantec 3004 rpm, 64 dBA² |
35.3 C
|
26.6 C
|
8.7
|
0.15
|
32 C¹
|
| Vantec 2456 rpm, 58 dBA² |
36.4 C
|
27.2 C
|
9.2
|
0.16
|
34 C¹
|
| Vantec 1500 rpm, <50 dBA² |
39.0 C
|
28.4 C
|
10.6
|
0.18
|
37 C¹
|
