Title : An overclocking saga with the Hedgehog
Submitted by : Lord Armitage
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Product : Kanie Hedgehog 238M
Price : £41.42 (Price includes VAT)
Available from : Overclock UK
Related reviews : [Alpha PAL6035]
I was running my PIII 700E (cB0 stepping) at 933MHz (FSB 133 - VCore 1.75) using a Globalwin FOB32 cooler with some silicion thermal paste. This setup provided me with a stable, working computer, however the temperatures were a bit on the high side, at 39C idle and 57C stressed, so I thought it was time to experiment with a few other coolers to see how much I could bring down the temperature.
To start off with, I bought the Golden ORB (which is reviewed here), and that helped push down the temperatures, bringing it down to 34C idle, 48C under full load. However this was still too high for my liking and went out in search of something to lower my processor temperatures a bit more. Then I noticed the fact that my Intel 815 chipset didn't even have a greenie for cooling which surprised me a little.
To combat this, I ordered some Arctic Silver paste (reviewed here) and a Blue Orb cooler (reviewed here) for the chipset. Installing the Blue ORB onto the chipset wasn't a very hard task, and applying the Arctic Silver grease was even easier, I was then able to run my rig at 1GHz (FBS 143 - Voltage 1.80) with 32C idle, 44C under full load, which is a significant improvement from what it was before. Another indication that cooling the chipset has some advantages.
While I was broswing Anandtech, I found their latest roundup on Socket CPU Coolers. Initially I was impressed by the Alpha PAL6035 (reviewed here), but what really caught my eye was the Kanie Hedgehog 238M with the awesome 7000rpm Delta fan. The Hedgehog is a solid copper heatsink, and because it is made out of copper which is a much better thermal conductor than other aluminium heatsinks. The Alpha range of heatsinks meets this half way, while having the heatsink itself milled out of aluminium, the base has got an embedded copper sheet, which is designed to give the same effect over the processor core as the Hedgehog, but without the full-on cost of a solid copper heatsink. However the extra performance comes at a price, since the Hedgehog is over 60% more expensive than the Alpha PAL6035.
Finding a retailer who will deliever to Ireland and stocks the Hedgehog heatsink isn't the easiest thing to do, however OcUK were able to, and I recieved the package a few days after my order. What blew me away was the sound of the fan (pun intended). However this is something us overclockers have to bear with, since the performance of the Hedgehog is stunning.
With the CPU running at 1GHz at a VCore of 1.80 the temperature was now 28C idle and 37C under full load. This represented a 20C temperature drop under full load, which is very substantial (35% drop).
Test rig specifications:
CPU: Pentium III 700E (Stepping cB0) @ 1GHz
Motherboard: Microstar MS-6326 815Pro
Chipset: Intel 815i
Ram: 256 Crucial PC133 CL2
Cooling: Kanie Hedgehog 238M with Delta Fan, ThermalTake Blue Orb & Cardcooler
Graphic card: GeForce 2 GTS
Hard drive: Western Digital ATA66 20Gb OS: Windows Millenium
After this, I felt like pushing the processor a little bit more, and tried raising the FSB some more, and at 145 (which equates to 1015MHz) it was stable, and so I moved onto 148/1036Mhz, which again prooved stable. At 150/1050Mhz the RAM started to be the problem, 256MB Crucial PC133 CL2 which was running at CL2. I am sure that 1050MHz at CL3 would work, but considering the performance hit I would suffer from dropping to CL3, I felt it wasn't worth it. After this experimenting I felt that it's best to keep it around the 1GHz mark for a reliable system rather than push it for another 30-50MHz, and this also allows me to use 1.75V instead of 1.80V.
So what have I learnt from this experiance? For socket cooling, there no better heatsink than the Hedgehog. The Hedgehog's advantage can be put down to the fact that the material used to make the Hedgehog is simply a better heat conductor. Hopefully we can look forward to more all copper heatsinks with some funky (and maybe more efficient designs).
This article was edited with the permission of it's author.