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T.I.T.I. Dr. Thermal TI-A8641L

Manufacturer: Thermal Integration Technology
Supplied by: Thermal Integration Technology
Street price: $18

by Dean Barker (4/30/2004)


Cooling isn't always about having a two pound heatsink capable of keeping the engines on the space shuttle cool.  While there are fantastic cooling solutions available, typically you have to pay dearly for them.  More often than we appreciate, we need an inexpensive cooler for a OEM processor.  Say you are building a system for a relative; are you going to give grandma a $60 copper heatpipe cooler with a dustbuster-ish fan or are you going to put together a stable and quiet system for her?  Thermal Integration offers a range of cooling solutions.  One of these that we have today, is aimed squarely at the AMD OEM replacement cooler market.  It is the TI-A8641-L hybrid cooler.  Let's start off with some specs then take a look see.


  • Application: AMD Athlon K7 processor up to XP 3200+

  • Dimensions: 60 (W) x 72 (H) x 80 (D) mm

  • Construction: Copper / Aluminum hybrid

  • Observed Weight (without fan): 442 gms

  • Fan: 70 x 70 x 25mm

  • Fan speed: 3800 RPM

  • Air flow: 32.4 CFM

  • Fan noise: 36.5 dBA

  • Three pin fan power connector

  • Clip: three prong latch

The pendulum seems to be swinging away from the all copper cooler to the aluminum/copper hybrid.  The reason is three fold; cost, weight and performance.  The hybrid coolers we have played with here have performed right on the heals of their all copper counterparts.  The weight differences goes without saying as copper is much heavier than aluminum.  Lastly, aluminum is cheaper than copper, so material wise they are cheaper to make and represent a more cost conscious product for the end user.  The A8641-L is one such cooler utilizing this three fold thinking.

The Dr. Thermal unit embraces the high fin count design we have grown accustomed to seeing over the past few years.  More fins means more surface area for convection, which means more efficient cooling.  Forty-one fins (including the aluminum side brackets) are bound together tightly by two screws going through the base laterally.  If the first pic below, you can see the aluminum guides for the screws on the bottom of each side.  A copper spacer measuring 10 x 45mm rests between each fin separating it from the next.  Twenty-seven aluminum fins surround twelve copper ones.  While the copper superficially appears off center it actually is not.  The processor's contact point is smack dab in the middle of the copper fins at the base.




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