My first test run was on an older Abit KR7A that I volt-modded to allow for a higher vcore up 2.7v! I used a Duron 600 MHz (AST1B) as I didn’t want to ruin my Athlon XP in case something went wrong. So I booted up the system and was able to clock this Duron up to 1320 MHz using an unreal 2.7v vcore. Using my trusty calculator
I ended up with a heat dissipation of 150~170Watt! The system was running at -13°C and after a few adjustments even dropped down to -19°C under load!
I started experimenting with my own mounting system; I used the 4 holes around the CPU socket and also created my own copper spacer to protect the CPU’s core. When remounting the evaporator I turned one of the 4 screws too hard and ended the life of this great Duron 600 prematurely. Good thing this happened to my “cheap” Duron instead of my XP1700+ XPMW 0308 which is known for its very good overclocking potential!
I installed the XP1700+ on an Abit NF7 motherboard and successfully mounted the evap-head. First results were quite disappointing, only 2650 MHz and not even “prime”-stable
. I tried everything I could and thought that maybe it was a heat problem so I exchanged the NF7 for a KD7A which is powered by the VIA KT400 chipset, with this board I can measure the internal CPU diode and report more accurate temperatures. 2860 MHz was the maximum stable OC I reached with this particular XP1700+, not too bad, but I wanted more.
I plugged in a new XP2000+ (AIUHB 0316 MPMW) and started increasing the multiplier and FSB, it didn’t take too long for me to reach 3045Mhz @ 2.275v vcore, it was stable in Windows but continued failing Prime until I lowered the OC to 2920Mhz for full stability!
How cool is it running?
Idle temp: -15°C
Load temp: -7°C !!
I think it is time to build a cascade
setup :-). So stay tuned and wish me luck...
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