Oc'ing E8500

Craiig

Craiig

Craiig

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Joined
16 Jun 2009
Posts
181
hey, im not really experienced at overclocking so heres my problem...

*SPECS*
E8500
Asus Striker II Formula - Bios version 2201
3GB DDR2 OCZ 1066mhz but is only running at 800 in bios
enermax galaxy 1000W PSU
9800GT 512Mb

I've been running my E8500 at 4.01GHz for quite some time with no problems and had it running in orthos for 2 and a half hours with no errors (quit it, due to being bored) and my vcore was 1.36250. Unlicked to memory fsb speed 1690.

Recently i tried to clock it to 4.5Ghz, but it wasnt having it so i decided to clock back to the 4.01GHz that has been working for quite some time. but when i try to boot my pc on 1690 fsb speed the bios freezes half way loading the picture (only in white, and no colour :S)

so i put the fsb to 1691 making it 4.015GHz i think and it seemed to be okay. But i only ran orthos for 40mins. Then i keep getting crashes with css loaded. so i went back to stock. reset cmos and im stock everything now.

any ideas whats going wrong? and how i can get back to 4GHz ?
 
well,

you may have degraded your cpu by putting too much voltage into it i.e jump from 4Ghz to 4.5ghz

your meant to go up in increments.
 
The result is that it needs more and more volts for a given clockspeed than what it needed before. The overclock get's less and less too.

I have first hand experience of this with a E8500 when they first came out. Got it to 4Ghz and got greedy and wanted more. I got it to 4.2Ghz and then gave it 1.52v for 4.5Ghz and started prime. After a couple of hours it failed so i went back to 4.2Ghz and could'nt get it stable. Same with 4Ghz. 3.8Ghz needed 1.45v but still failed prime after a few hours. 3.6Ghz was the best i could then get out of it and even that needed 1.42v.

My current E8500 only needs 1.285v for 3.8Ghz and does 4.5Ghz on 1.4v. I will not make the same mistake again.
 
awww man :'(

well i currently have it running 4GHz at 1.4 vcore

ran orthos for 2 hours then stopped it. got to 58C

Is this okay?
 
Yeah you're fine, but lesson learnt. My chip had the same issue at 4.5GHz, kept losing stability every month or two until I dropped to 4.25GHz. Generally 1.4V is where people draw the line, but 1.36 is the safe limit.
 
I accidentally had it running at around 1.5v for a few minutes after swapping my e6750 for e8500. Will this cause any damage? Thought the voltage would reset automatically with a new CPU but it didnt :(
 
IF it was a few mins then i would'nt worry about it, that kinda volts is generally heat problems when underload, but if it was'nt loaded and sounds like it was'nt then no worries.

To put ur mind at ease iv had my E8400 on 1.55v under water fully loaded up when benchmarking, so for only a few mins it will be fine.
 
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