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Used to overclock much better

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About a two months ago I got fed up with the amount of fan noise from my system and decided to replace my system fans with some 120mm, and to remove the Chip Set Fan and replace it with a home made passive heat pipe one based on a CPU cooler.


So I pulled the system apart most carefully, removing all cables and lifted the Venus MoBo out of the case but left the RAM, CPU and it cooler mounted on the Mobo intact as I did not need to touch them, and fitted the new Chip Set cooler.


Cleaned up the case, moved a couple of drives about for better air flow, fitted the new 120mm case fans and put it all back together again most carefully.


However when I tried to start-up the system it would not boot, I double checked everything and tried again but still no boot. So I cleared the CMOS and went back to NONE overclocked default setting, tried to boot again and the system came up and ran fine. So I started to overclock and found that now no matter what I try I can not get the CPU to go beyond 2520 MHz where before the system rebuild it worked all-day every day without a hitch or crash at 2800 MHz at vcore of 1.35 .


Now I know you may think that I have mist something but I kept very careful notes of the original overclock, pages of them with all the result at various speeds being well recorded.


(By the way the chip set now runs a couple degrees cooler, and is silent so I don't think I have caused any damage there)


Any Ideas please many thanks in advance IMK


This is the system as of today BUT with its previous 100% stable overclock

Enermax NoiseTakerEG701AX

DFi Venus Ser. #079

CPU Opertron 170 280*10=2800 full load temp 53c Vcore 1.35 Zalman 9500

G.Skill 2x512MB TCCD DDR550 at 560 2.5,3,3,7

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You may have chipped the chipset when changing the cooler?


Read thats its easy to do and must admit i was bricking it whilst i was changing mine.

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