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***The Official Wolfdale 8200/8400/8500 Overclocking Thread ***

My E8500 E0 below is waiting to be installed. Searches on this stepping show 4.4GHz at stock volts on air, 4.8GHz with extra volts and 5.131GHz on water. I am holding back on the install until my new Ultra Extreme cooler arrives tomorrow. Hoping for 4.5GHz on my Rampage Formula.
img3168av9.jpg

...and before anyone asks, it was not purchased here.
 
555BUK said:
My E8500 E0 below is waiting to be installed. Searches on this stepping show 4.4GHz at stock volts on air, 4.8GHz with extra volts and 5.131GHz on water. I am holding back on the install until my new Ultra Extreme cooler arrives tomorrow. Hoping for 4.5GHz on my Rampage Formula.
[snip]
...and before anyone asks, it was not purchased here.
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I got the exact same CPU, with the bottom number only differ by 26, my 9a1112 to your 9a1138. Hope you are right with the Overclock!
 
I couldn't wait until tomorrow so had a quick play using an old Scythe Mine for air cooling. I can run 4.2GHz on stock vid (1.25) but 4.5GHz takes 1.45v. I may be able to reduce voltages slightly, once I have had time to play with the other tweaks my board offers. Temps are 35idle and 64load. Only Prime tested for 30mins.

So far it's doing better than most E8600's.
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I know it's a cool day, but I am amazed at how cool this runs at 4.5GHz and 1.45v. My old E8400 C1 ran hotter at 3.9GHz with less volts using the same Scythe. Will try for 4.6GHz once my Thermalright 120Ultra Extreme arrives. 1.5v should be ok with that.
 
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555BUK said:
Will try for 4.6GHz once my Thermalright 120Ultra Extreme arrives. 1.5v should be ok with that.
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4.6ghz would be a very good clock for an E8500, but to be using 1.5v on air to get that clock is ridiculous. If it was for benching, then it would be ok, but 24/7 on air ? i think not. But if it has the same caracteristics as the E8600's, the heat generated at that Vcore will kill it, if indeed the Vcore itself dos'nt.
 
There are not that many posts from people who have actually killed their wolfies by feeding them too much voltage. I think that so long as cooling is adequate, these chips can take "reasonable" ammounts of volts. The only processor I ever killed was a q9450 which was dropped from 2 feet onto the floor and it never worked again.

1.5v will probably be the max for my personal benching and if temps go above 60deg I will avoid even that. I prefer to use 60degrees as a redline rather than voltage. My 24/7 clocks will realistically be somewhere around ~4.2GHz. I do not need 4.5 or more for anything other than benches. I also enable C1E which keeps low MHz and Volts when idle. 4.5GHz (500x9) @1.45v equates to 3GHz (500x6) @ 1.15v on my mobo with this chip - I just tried it:).

edit: here's another screenie of my wolfie @ 1.45v. Temps should improve greatly when I fit a decent air cooler.
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E8500 E0 / TRUE air / Asus Rampage Formula / 4x2GB OCZ ReaperX
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NOT Prime stable (faile after 10-15mins), but 3DMark and everything else passes. I was just aiming for a sub 10sec SuperPI:D. These speeds are only for benching and I will back down to 4.2 for 24/7.

edit: Added some 3DMark scores @4.75GHz with a single HD4850.
3DMark01 66624
3DMark03 48826
3DMark05 26290
3DMark06 15363
SuperPI 32MB = 10m 40.052s

After owning and testing a Q9450 @3.4GHz, a Q6600 @3.6GHz and this E8500, I can honnestly say Dual cores are still the way to go. The only area where my quads could compete was in HD Video encoding (I backup all my legitimately owned Blu-Rays), and even here the E8500 is only a shorth distance behind. For current apps 2x4GHz+ cores are better than 4x3GHz+.
 
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Good chips these, I've got my one to 4GHz just by upping the FSB. I've only got a Arctic 7 on it with fan profile set to silent so it's good enough for me.

I'm going to leave it at that for the time being as my computer was playing up this morning and I suspect it was a dodgy ram stick, but when it's stable, and booting from cold ok, I'll up the overclock to see what it can do.
 
Got my bargain E8400 off the bay this morning. :)

Vcore is set to 1.3v in bios and cpuz reads 1.264 so should be able to drop it a little to shave a few degrees off the temp as long as it holds.

Vid is 1.25

Will give it a thorough 8 hours tonight. An Akasa Evo 120 is sat on it with a Yate Loon D12SL-12 Fan strapped to the HSF.

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Wiggins said:
Got my bargain E8400 off the bay this morning. :)

Vcore is set to 1.3v in bios and cpuz reads 1.264 so should be able to drop it a little to shave a few degrees off the temp as long as it holds.

Vid is 1.25

Will give it a thorough 8 hours tonight. An Akasa Evo 120 is sat on it with a Yate Loon D12SL-12 Fan strapped to the HSF.
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You should run small ffts, not blend to stress your CPU mate.
 
Was bored so I thought I'd see what my e8500 could do (SuperPi wise) on my new Gigabyte x48t board! :)

I'm sure there more in here...BTW, fails ORTHOS after 20 odd minutes at this speed and voltage. Obviously, voltage is not anywhere near that high 24/7! LOL

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Voltage does have an impact on processors as Gurusan states, but it is heat that will generally kill them/degrade their lifespan. Sensible voltages are upto 1.5v providing that your cooling is sufficient (so 1.5 on water, 1.7 on phase and 1.40-1.45 on air)

People are tooooo paranoid about voltages!!! :)
 
I had to up the voltage to 1.32v to get it stable at 4.05Ghz. Cpuz reports 1.296v idle and 1.28 under load. Vdroop?

I left the machine running small ftt's for 4 hours last night while I went out and Realtemp reported max temps of 61c.

Is that ok?
 
I thought as the temps were hitting the 60's mark, I would drop the clock down a little to 3.8Ghz with 1.275v and see what I get.

Not sure which one to trust for temps as Everest is reading 61c and Realtemp is 53c-56c. I might have to strap a higher RPM Fan onto the heatsink.

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