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: 7000±15 % RPM, 38.4±15 % CFM, 46.7±2 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:
AMD Tbird 800 Stock
AMD Tbird 800 @ 1003 (1.85V)
|Ambient Temp. ~ 27C
|ThermalTake Dragon Orb 3
|SVC Golden Gate 40
|Thermal Take Volcano 5
|Thermal Take Volcano 6Cu
|Thermal Take Volcano 6Cu+
|Bits Power NP60D
|Bits Power NP80D
| Dynatron DC1206BM0
|Dr. Thermal TI-V77(N)
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.