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Overclocking E4500

post #1 of 7
Thread Starter 
I just switched my E6400 from my HTPC to a E4500 from my dad's PC. Main reason is to overclock, since the E4500 can reach higher overclocks than my E6400: the 6400 topped at 2712 MHz because of my MSI G41M-P21 mobo FSB wall (339*8, if i got to 340 i would not POST no matter the volts), and the 4500 has been going strong and stable at 2884 MHz, and the 4500 can withstand higher temps than my 6400 (61°c vs 73°c) so i could run more volts through it.

At the moment, the 4500 is going 315*9 @ 1.4v (i highly believe i'm overvolting it, since my 6400 needed 1.2v to run stable @ 2.71GHz even tho it is stable). I also run it @ 64°c at full IBT load with my H50 exhaust (under 60°c with BOINC loads, and 55-57°c with gaming), and i plan to lap my CPU and the H50 tomorrow, so i do have the headroom.

I want to reach at least 3 GHz (or as close as i can get), since i heavily doubt i can reach more on the mobo, but i know very little of OCing C2D's due to my FSB wall on my mobo, and i feel an i3 is different. What guides, or what do you recommend i could do to get this done?
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post #2 of 7
What RAM are you using? Looking up the specs of the board, it supports an FSB of 1333 rated, so you should at least be able to push it that far, which would net you your 3 ghz overclock.
Edited by Flying Toilet - 6/8/11 at 8:48pm
post #3 of 7
Ok, what you need to do is mod the CPU.

I got my old E4500 to 2.9GHz on stock voltage with a DELL mobo.
http://www.overclock.net/intel-cpus/...mod-guide.html

My temps were in the mid 50s with my current cooler.
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post #4 of 7
Thread Starter 
Flying Toilet: I'm using 'Sair XMS3 1333 MHz RAM, currently at stock timings. I've also changed my sig rig to my HTPC so you can see what i have

kora04: No need to do so, my mobo can OC via BIOS and i've already gotten to 315 MHz FSB. I can boot at 3 GHz (300*10) and 3.08 GHz (280*11) but they're unstable. Plus, it brings a small switch to do auto OCing, but i don't trust it.
I just hit a FSB wall because my mobo sucks at extreme OCing.
My issue is most likely with volts, and not just vcore (i'd guess i have to raise VTT, it's on AUTO atm)
Edited by Starbomba - 6/8/11 at 9:04pm
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post #5 of 7
Try running it at 273*11. Some of the Core 2's don't like it when you drop the multiplier. Don't bother with the OC switch. Also do you have any options for voltage in the NB/SB/HT?
post #6 of 7
Thread Starter 
Yup, haven't bothered with it. Hell, it doesn't even modify the voltage, just the FSB.

The voltage options i have are Vcore, NB, VTT and DRAM.
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X79 The Hydra
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post #7 of 7
Try bumping the voltage of the Northbridge up, as well as VTT. The higher the VTT, the more likely you'll have a stable overclock, or so I've been told. Max should be 1.55v.
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