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-- GlobalWin SAK38 Cooler
-- 12.13.2001
-- By: GideonX
-- Page: 1

   We haven't heard much from the heatsink folks at GlobalWin around here lately.  So I was quite excited when this new item arrived on my front stoop.  GW has been quietly working on some newer coolers and venturing in the aluminum case scene.

   The first huge heatsink I purchased was actually from GlobalWin, their FDP32 a few years back.  This was for my C366 and come to think of it, it was probably overkill for that chip.  Anyway, fast forward and we're up to today where aluminum and copper are machined perfectly for the best cooling possible.

   GW's next cooler to emerge that combines these two materials is the SAK38.  That's right, the SAK!  And you thought the CAK was a funny name, dig the SAK.  Anyway, the first impression of the unit is that it is a bit taller than most units.  Coming in at about 70mm in total height with the fan on, small case users beware!  Check your power supply position, do not waste your money to buy this and not have it fit!

   Here are some quickie specs:

  • Fan Speed: 700015 % RPM, 38.415 % CFM, 46.72 Dba
  • Dimension: 60 x 60 x 45 mm
  • Material: Aluminum Alloy with Copper insert
  • Total Weight: 280g
  • Supports AMD TB/XP and PIII S370s up to 1.8Ghz

   This fan is not exactly the quietest, so brace yourself.  I believe its a re-labeled Delta fan, the one we all love and hate.

   One of the newer additions to the design of the SAK38, is the new 3 hole clip.  This clip is a lot better for stabilizing the heatsink on top of your CPU.  Also, if you happen to have broken off the middle tab on your socket (Kile!), this can be a nice alternative.  It will still allow you to have a heatsink to be used on your motherboard.  One downside of this clip is that it gets stuck in between the fins a bit too much.  It probably would be easier to maneuver if the fins were a bit wider apart or if the clips were thinner.

   The fins of the unit have this uneven pattern, one row is never aligned with the next.  Not exactly sure if this helps much in cooling, but it probably was easier to machine the unit

   On the base of the unit, you can see the forged copper insert in the middle of the aluminum heatsink.  Kind of reminds of the way the Alpha heatsinks look underneath, but that may just be me.  The paper covers the TIM (thermal interface material), which we happily removed with a credit card.  The bottom is smooth without much roughness or uneven spots.  The picture above doesn't show much shine to it, but it is as smooth as it can be without us lapping it.

   I noticed that the fan is lifted above the heatsink with these grommets.  I would assume with these lifting the fan, some air would leak out from the sides.  This does cushion the unit from vibration of the fan, thus lowering the sound level a bit.  But, after a bit of testing it still sounds loud and it still cools pretty well, go figure.

  Our trusty old test rig is as follows:

  • IWill KK266 Socket A Motherboard

  • AMD Thunderbird 800Mhz CPU

  • Crucial PC133 CL2 Ram, 128MB

   The test will consist of an idle temperature check and a full load temperature check.  The full load will be accomplished by using the RC5 program and running 3DMark 2001 for 30 minutes.  Arctic Silver II Thermal Paste used without a doubt.

   Here are some results:

Models

AMD Tbird 800 Stock

AMD Tbird 800 @ 1003 (1.85V)

Ambient Temp. ~ 27C Idle Full Load Idle Full Load
ThermalRight SK-6 31C 34C 36C 40C
GlobalWin CAK38 34C 37C 38C 42C
ThermalTake Dragon Orb 3 35C 37C 38C 43C
Vantec CCK-6035D 32.5C 35.5C 36C 42C
Swiftech MCX370-0A 31.3C 33.7C 34.3C 38.5C
SVC Golden Gate 40 33.5C 36C 39.5C 43.5C
Thermal Take Volcano 5 35.9C 37.5C 39C 43.8C
Thermal Take Volcano 6Cu 35.6C 37.4C 38.6C 43.3C
Thermal Take Volcano 6Cu+ 35.2C 37C 38.2C 43C
Bits Power NP60D 31.3C 35.2C 36.7C 42.4C
Bits Power NP80D 31C 34.8C 36.5C 42.4C
 Dynatron DC1206BM0 31C 33.5C 37.2C 40.6C
Vantec CCk-6027D 31.8C 34.9C 35.7C 41.5C
Alpha PAL8045 31.5C 32.8C 34.8C 38.1C
Dynatron DC1206BML 35.8C 38.4C 40C 44.2C
Dr. Thermal TI-V77(N) 34.7C 37.2C 39.5C 42.7C
GlobalWin SAK38 30.6C 33.3C 36.4C 40.5C

   Very nice, one of the better units we've come across in our testing rig.  Some of the temperatures achieved are the lowest we hit overall.  With a kick ass aluminum/copper combination and a great clip design, this is one you should keep in mind when diving in for a good performing cooler.  They also include a GW case badge to boot!

   Thanks to GW USA for sending over this sample, expect to see even more from them in the near future.

  Pros:
  • Great performer
  • Easy to install, great clip design
  • 7000rpm fan is not as loud as my older 6800 screamer

  Cons:

  • Clip is too tight between the fins

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