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E8400 4GHZ Clock? - Page 6

post #51 of 98
Quote:
Originally Posted by DChat View Post


thx to your post, you inspired me to try 4.25GHz.. 500x8.5@1.45v

but enough threadjacking

http://img268.imageshack.us/i/95447799.jpg
IBT on standard is for pussies
90%-100% of free ram and 20 runs atleast
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post #52 of 98
Thread Starter 
Quote:
Originally Posted by donrapello View Post
Kuyumdzhiev, i really recommend you try the method what i used for finding stability.
You won't get it stable in weeks if you go like that

Just start with 500x6 for example, put your vcore to 1.25v max, Cpu PLL to 1.54-1.58v, Gtl ref x.65, Fsb term/Vtt 1.26-1.32, vNb 1.26-1.3v, Sb 1.2. Disable almost everything at that page. Then try running P95 with large fft's.

With 500x6 your ram should go with 1:1 divider to 1000mhz? It's not dangerous
Also too much voltage on my mem made it unstable. tried with 2.1-2.2v and failed.. then 2.04v was the right one.

My board was very unstable if i put too much Vtt or vNb.. .02 made difference to either way.

If Prime95 fails, make a small change in ONE setting and see how it goes.. better or worse. If you change too many settings on every boot you won't find out what's helping you and what's not. But don't change vcore because it isn't needed atm.

Otherwise it's gonna be endless cycle.. or with a lot of luck you'll find the settings
I will do that, thanks. If i make some kind of progress i will post the update. Cheers guys!
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post #53 of 98
Quote:
Originally Posted by donrapello View Post
...and 20 runs atleast
And burn my cpu chip? No thanks! Will run it on high and see what happens
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post #54 of 98
Thread Starter 
@donrapello So far the system seems stable. Almost 1h 30 min Large FFT's test no errors. Now should i start messing with multiplier and the bus or?
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post #55 of 98
Quote:
Originally Posted by DChat View Post
Huh? Memtest will show at least that his ram CAN run at the desired timings.. if they don't like 5-5-5-15@890MHz with his board, he needs to know that. No use in stressing the current ram settings when one at least doesn't know that much.
Memtest is next to useless. Good for finding defective sticks but takes forever and doesn't always show errors when RAM is unstable in certain apps.

@Kuyu: Keep following what donrapello suggested. He's finding the stability of your mobo/RAM. You need 4-6 hrs of Prime95 to know if you're really stable.

Once you know your RAM/NB is stable at 500-510, you can go back to stock multiple and tune your CPU, starting at a reasonable FSB.
Edited by 2thAche - 3/8/11 at 4:58pm
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post #56 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
@donrapello So far the system seems stable. Almost 1h 30 min Large FFT's test no errors. Now should i start messing with multiplier and the bus or?
First you should get your mobo and ram prime stable using 500x6 and stock vcore. After atleast 4 hrs of p95 you can go to the next step.. That's about getting up multi to 8x500 for 4ghz and running IBT with max free ram and 10-20 runs. If it fails, up vcore a notch and try again.

This way you'll get your mobo and ram stable for high fsb with prime and overclocking of cpu is made with vcore and multi only using IBT.

This is the easiest way to get your system rock solid. First by getting the mobo stable and then cpu.

Sorry if my writings are a mess... I'm typing this with my cellphone and 1/4 screen is broken
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post #57 of 98
Thread Starter 
Quote:
Originally Posted by donrapello View Post
First you should get your mobo and ram prime stable using 500x6 and stock vcore. After atleast 4 hrs of p95 you can go to the next step.. That's about getting up multi to 8x500 for 4ghz and running IBT with max free ram and 10-20 runs. If it fails, up vcore a notch and try again.

This way you'll get your mobo and ram stable for high fsb with prime and overclocking of cpu is made with vcore and multi only using IBT.

This is the easiest way to get your system rock solid. First by getting the mobo stable and then cpu.

Sorry if my writings are a mess... I'm typing this with my cellphone and 1/4 screen is broken
No problem mate, I'm using a phone myself. I Ran all tests with the current 6x500 and the system seem to stable, I'll up the multi to x8 and I'll try again.
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post #58 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
No problem mate, I'm using a phone myself. I Ran all tests with the current 6x500 and the system seem to stable, I'll up the multi to x8 and I'll try again.
it might worth you a try
post #59 of 98
Thread Starter 
Ok, 1.h 54 minutes of Prime95 Blend test and an error occurred "Hardware Failure, rounding 0.5 expected less than 0.4" I will try IBT now on Max with 10 runs, if fails I'll up the voltage with a step or two and test again.
@Edit. IBT on Max level didn't fail, it was successful. But Prime seems to fail no mather what IBT says. I gonna test more atleast 5-6 hours Large FFT's 500x6 to see if it is really stable as Don have said.
Edited by Kuyumdzhiev - 3/9/11 at 4:40am
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post #60 of 98
my E8400 is running 4.23 GHz at 1.350000 V and it's so stable ...

if your memory run at 1066 MHz stock .. you should increase it's voltage after OCing..

if your memory runs stock at 1.8 you should push it to 1.940+ after OCing
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