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JMC 400094 Socket 478 Heatsink Review
JMC 400094 Socket 478 Heatsink Review
Abstract: The actual heatsink is composed of two parts; the first being the central fined extrusion, and the second being the base plate.

 Manufacturer  Category  Published  Author 
JMC Products   Cooling / Heatsinks   Oct 14, 2002   Max Page  

JMC 400094 Socket 478 Heatsink Review

Remember the days of the original Thermaltake Orb? Well this new heatsink from Austin based JMC Products is sure to give you flash backs. The two heatsinks may appear similar at first glance, but underneath it all the are some big differences. JMC mainly supply OEM's with heatsinks, so it shouldn't be much of a shock when you hear that the volume dependent per-unit price of this cooler is just $6-7USD. The ultimate destination for the JMC 400094 SkyJet 60 is desktop servers, but we'll have to wait till after we look at the thermal test results before we offer our own opinion.

The actual heatsink is composed of two parts; the first being the central fined extrusion, and the second being the base plate. The extrusion is press-fit into the baseplate through a 35mm diameter hole, and the base plate is then sanded flat, and smooth.

Heatsink Specsheet:
  • Model Name: 400094
  • Fan Specs: 7000RPM, 25CFM, 34dBA, 12V, 0.25A
  • Fan Dim: 25x65x65mm
  • Heatsink Dim: 61x83x69mm
  • HS Material: extruded aluminum
  • Weight: 290grams
  • Mfg by: JMC

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Heatsink Audio Sample Included.

Now, this heatsink is officially rated for Pentium 4 processors up to 64watts in power so we will be stressing it just a little on our 100W test in just a second. But then again, we've stressed every other heatsink to that level, so the comparison will be interesting to say the least!

The assembly of the JMC 400094 is pretty simple, but it's also worth a close look. The heatsink has a small recess milled from the center of the finned extrusion which is where the fan sits. When the power is switched on, the fan sucks in air from the top and blows it out through the bottom of this small recess, and through the fins.

Recess for the 60mm x 25mm fan to sit into. The fan is nothing more than a motor attached to a small frame. This assembly fits into the recess milled from the aluminum extrusion.
° Next Page 

Table of Contents:

 1: — JMC 400094 Socket 478 Heatsink Review
 2:  The heatsink: a view from each angle
 3:  Heatsink Test Parameters
 4:  Acoustic Test Results
 5:  Synthetic Thermal Test Results

List all JMC Products heat sinks that Frostytech tested?

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