Spire CoolGate SP450B0 Heatsink/Fan

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Aug 1, 2004 by Edward Ng

Spire CoolGate SP450B0 HSF

Spire heatsinks are not new to SilentPCReview; we've seen in past reviews that this company makes good quality products at modest prices. This time around, we're taking a close look at their latest creation, the CoolGate heatpipe cooler. The CoolGate is designed for "high performance applications." It uses vertical dual heatpipes to transport heat away from the CPU.

  • Dimensions: 84x56x75 mm (l x w x h)
  • Noise Level: 29.7dBA
  • Ball Bearing 70x70x15 mm Fan
  • Rated Speed: 3700 RPM +/-10%
  • Air Flow: [email protected],700 RPM
  • Current: 0.25A
  • Life Hours: Ball: 50,000


Dual heatpipe, all-aluminum heatsink
Power Connector: 3-pin mainboard
  • Intel: Celeron ~2.8GHz (FC-PGA2)
  • Pentium 4 ~3.4GHz (Prescott)
  • Pentium 4 ~3.4GHz (Willamette/HT N)


CoolGate is a hybrid design comprised of two all-aluminum, high-fin-density heatsinks, welded together at the sides, with their open sides facing each other. The fins are approximately 0.7mm thick with 1mm gaps between them; the fins of the two sinks do not come in contact, but reach within 0.5mm of each other, tip to tip.

Two HS, bonded fin-to-fin, is the essence of the CoolGate design.

The Spire web site describes the heatsink as pure aluminum, but they also included the, "Copper Base," icon on the product page. Perhaps this is an error, as my sample is quite obviously pure aluminum save for the heatpipes. The dual heatpipes are copper, and extend from base to the top along one side of the cooler. The cooler itself is dressed up in a translucent plastic shroud, which hides the unfinished appearance of the top sink. A 3-pin power connector provides fan speed monitoring.

While CoolGate comes with its 70mm fan preinstalled,
its aluminum clips aren't; the user simply attaches them with the four screws that are provided.

CoolGate's dual copper heatpipes: The shroud provides some protection. The two holes for mounting the clips are also visible. The small chrome screws keep the shroud on.

Cleaner than the other side, the caps covering up the holes for heatpipe entry can be seen;
it is assumed that the heatpipes come through most of the way, but don't poke through.
Blue plastic guides at the bottom keep the heatsink snug and securely centered when installed.

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