Help: E8400 Overclocking

Nomi929

Nomi929

Nomi929

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Joined
16 Jan 2009
Posts
45
Hi Guyz,

I got my E8400 Overcloked to 4.5ghz.

Its stable, and passes almost all benchmarks.

But some how not stable in stress testing and sometimes crashes during Crysis.

Can u please help me in getting it more stable.

Here is the screenshot of my Bios Settings @ 4.5ghz.



So please guys, have a Look, and suggest me some changes.

Thanx in advance.

Best Regards.
 
Your cpu voltage is a bit high, are you using watercooling?

You might be pushing the chip a bit much.
 
No WaterCooling!

I am Using Sunbeam Core Contact Freezer!

Its E8400 E0 Overclocked to 4.5ghz.

Regarding vcore, less than that, system gives problems.
 
What sort of load temps do you get with that? 1.5 is high, even more so as the E8400 is 45nm.

Congrats on the 4.5Ghz though.
 
1.5V? I'm also interested in load temperatures

If it's loading hot and running at 1.5V, I would be very interested to know how long the chip lasts. It may well be years, but I'd be inclined to guess it's going to have problems soon


edit: oh yeah, should say helpful things too. What's the fastest stable settings you have for it? The approach of drop fsb until completely stable, then increase it until unstable, tweak voltages until stable again then repeat is probably the only viable one. You may well not be able to get 4.5ghz stable out of the chip. I'm going to place my guess at temperatures being the problem, have you got a fan aimed at the northbridge?

If that's a P5Q, the internet believes it overvolts ram by 0.08V. Did you check your ram actually needs 2.1V set to be stable?
 
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Nomi929 said:
...But some how not stable in stress testing...QUOTE]

pretty sure that is the difinition of unstable. personally i think its prob a little too much for the chip. 1.5v.... i was scared to put 1.4 through mine xP very brave of you, can ya tell us ur idle/load temps? from doing research it may well be stable in benchmarks but they dont really completely max out the cpu like stress testing does, also which test are you doing? the cpu only or cpu and ram? as if its the cpu and ram, the ram might be letting you down. but personally i would bring it down to 4.4 and see if its stable then.

gratz or doing things at 4.5 tho xP i could only dream of that hehe
Click to expand...
 
If you do not reduce the vcore you will kill that cpu. No more than 1.45v for a 45nm cpu and preferably 1.4v. I killed my first E8500 with 1.52v!!
 
Yeah, Intel recommendation is 1.368v, so even on water, 1.5v is a crazy amount of power to provide it.
 
pastymuncher said:
I killed my first E8500 with 1.52v!!
Click to expand...

What symptoms did you get if you don't mind me asking? Maximum achievable overclock decreasing with time, abrupt death, other?

Also curious if it still worked fine at stock settings after the damage done by the 1.52V, and how long it took to hurt it

Its not often I see someone who's burnt out a chip through overvolting, definitely interested
 
JonJ678 said:
What symptoms did you get if you don't mind me asking? Maximum achievable overclock decreasing with time, abrupt death, other?

Also curious if it still worked fine at stock settings after the damage done by the 1.52V, and how long it took to hurt it

Its not often I see someone who's burnt out a chip through overvolting, definitely interested
Click to expand...

Rapid degrading of overclocking ability. First was able to do 4.2Ghz, then 4Ghz, then nothing over 3.6Ghz. At that point i gave up on it. Still worked at stock at the time but for how much longer i don't know.
 
I am pretty sure your overclock is deffo not STABLE.

If it crashes under stress tests then no way is i stable.

Running benchmarks doesnt always stress components 100%.

As above, take a few steps back and get to a clock where it does not crash, and go from there.
 
4GHz doesn't require much more volts than stock, to get 4.5GHz on AIR thats insane!

Even if it was stable in tests you never know when it would give up.
 
Voxination said:
rjkoniell and Yewen got a i7 950 D0 to 4.87Ghz using a Fenrir and a Delta fan :D. LINK
Click to expand...

Whats that got to do with this!

Congrats on the OC mate but i think thats abit high Vcore wise too ive got 4.2 from mine with 1.3ish volts but it wasnt really game stable so setled for 4ghz
 
kerrgreg said:
Whats that got to do with this!
Click to expand...

Dam mentioned how 4.5Ghz on air was insane :D.



I'm still curious as to load temps.

Actually (Not to sound doubting here) I'm keen to see a CPU-Z Validation as anyone can hop into the BIOS, change those values, take a picture, and claim that the OC works.
 
Trying to not get off topic here but thats a i7 i assume that Dam was refering to a 775 OC and i guess the OP is using this as a daily clock though i really hope not
 
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