Reasonable noise, good performance – Joe
SUMMARY: Although not for general P4 use, a good heatpipe CPU cooler.
A friend (Brett) dropped by for a chat and brought over Shuttle’s PH4 Heat-Pipe. This is designed for use in Shuttle’s small form factor systems (Model #s SS50C, SS51G, SV51F and SB51G), and as such is NOT necessarily suitable for general P4 use. Two factors limit its use:
- The heatpipe fin assembly overhangs the motherboard by quite a bit (3″ – 4″)
- The fan assembly is designed for mounting in Shuttle’s case; mounting it to the radiator requires a user mod.
I should also note that the fan wire is very short – you might need to lengthen it. Shuttle is selling these for $39.
The fan assembly slips over the fins:
The four knurled screws are to mount the fan to Shuttle’s chassis – to adapt it, you would need to design a different method; it should not be too difficult.
The fan is an Sunon Model #KD1208PTB1 – an 80 x 25mm unit rated at 39.5 cfm @ 3000 rpm, 33 dBA¹. I found it to be tolerably quiet – I measured its noise at 61 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 (2.3 watts).
The base is a copper baseplate:
Affixed to it is an aluminum finned top piece. I’m sure it adds to the cooling – good airflow over these fins may increase performance a bit. The heatpipes have a liberal application of thermal grease to enhance heat transfer.
The clip is a good one:
It’s easy to mount and very secure.
Overall, the build quality is a step above other heatpipes I have seen and has a very sharp appearance.
I tested the Shuttle P4H on an Acorp 4S845A motherboard with a modified P4 1500 to read CPU case temps.
CPU Case Temp
C/W = Delta / CPU Watts