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-- Zalman Heatsink Round Up
-- Category: Review
-- Posted by: GideonX
-- Posted on: 2001-07-31
-- Price: ~ $N / A USD
-- Pages: 1 2 3 [ 4 ] 5
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   The Zalman CNPS5000 follows the more traditional approach to making heatsinks. Instead of having the fan mounted on a bracket they have mounted the fan to a plastic sheath that eliminates the sounds caused by the fans vibrations. The CNPS5000 is a very heavy heatsink one of the heaviest I have ever tested. The CNPS5000 uses the AMD bolt through the motherboard specs, while good in theory the CNPS5000 doesn't implement it very well. The CNPS includes everything needed to mount the HSF to the motherboard, and some spare parts. The base of the CNPS5000 is very smooth except where you can see little lines from the folding process extending into the middle. I would of liked to see a solid base on the bottom of the CNPS5000. Also I would of also liked to see the core of the CPU actually land in the middle of the HSF instead of near the edge by the aluminum bars.

   I didn't get to test this heatsink as much as I wanted because we were having problems with the bolt through design. I followed the instructions to the letter, and thought everything was fine, but I noticed my idle temps (around 50C and rising) were higher than the CNPS2005. As I was monitoring the temps, it happened, black screen and post. At first I thought that the power went off then I remembered I had an UPS. So I thought my power supply was going on the fritz, since I just installed an Enermax 431 watt. I let the computer reboot into windows and I started my idle temp test over. About 5 min later it did it again. I knew it wasn't the power supply the CPU was overheating. I unplugged the computer, opened it up and took off the Zalman CNPS5000. To my horror the thermal paste on the heatsink indicated that just under 3/4 of the heatsink was touching my core! The computer gods had smiled upon me I was really lucky I didn't fry my CPU. But then I noticed something else the CNPS5000 had taken a huge bite out of one of the corners of the core, and nibbled on another. I couldn't understand how this happened; I followed Zalman's instructions to the letter, all the screw appeared to be the same height, and all the screws on the motherboard were tight. I found it hard to believe that with all of the screws at the same height that only 3/4 of the heatsink would be touching the core, and crushing to corners of my core. I will never touch, own, or recommend this heatsink to anyone as long as I live. I wouldn't wish this heatsink upon my worst enemy.

CPU

Ambient

Idle

Full Load

1400 MHz @ 1.75v Normal

27C

ABORTED

ABORTED

1400 MHz @ 1.75v Quiet

27C

ABORTED

ABORTED




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