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E8400 4GHZ Clock? - Page 2

post #11 of 98
Thread Starter 
Quote:
Originally Posted by DChat View Post
Indeed, the vcore does not seem to be the issue here. I think your ram isn't getting enough juice with 2.1v.. not sure though. What speed is your ram at in the bios?

And is this your ram? http://oc.adata.com.tw/1_product_det...id=AD21066EU2K
I've returned to safe clock at 3.8with auto settings and 1.2vcore , but i think the speed of the memo was 900mhz while i was testing. Yes, thats my Ram 2x2GB.
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post #12 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
I've returned to safe clock at 3.8with auto settings and 1.2vcore , but i think the speed of the memo was 900mhz while i was testing. Yes, thats my Ram 2x2GB.
Ok, just to rule out some known issues, in your bios:

- set Load Line Calibration (LLC) to "enabled"
- set Cpu Spread Spectrum to "disabled"
- set GPU/VGA/PCIE Spread Spectrum to "disabled"
- set Legacy USB Device to AUTO (it's in a different tab)
- set C1M virtualisation as well as Vanderbilt crap to "disabled"

ok, now for the overclock itself:

- manually set the multiplier to "9"
- fsb to "445"
- NB strap can be 400 or 333, they'll both give you a ram speed of 890Mhz. Preferably 333
- Mem timings to 5-5-5-15, rest of mem settings to AUTO
- vcore voltage to 1.4v
- Mem voltage to 2.2v
- NB voltage to 1.3v
- CPU PLL voltage to 1.3v (if you have that)
- transaction booster and other fancy stuff should be on AUTO

Let us know how that goes
Edited by DChat - 3/6/11 at 1:35pm
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post #13 of 98
By the way, you might want to try Intel's Burn test program found here: http://downloads.guru3d.com/IntelBur...load-2047.html

Prime95 isn't the most trustworthy program nowadays. Run the test for 10 passes. No errors? Then you can start having some real fun
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post #14 of 98
Thread Starter 
Quote:
Originally Posted by DChat View Post
By the way, you might want to try Intel's Burn test program found here: http://downloads.guru3d.com/IntelBur...load-2047.html

Prime95 isn't the most trustworthy program nowadays. Run the test for 10 passes. No errors? Then you can start having some real fun
With the settings above and with intel burn test I've stopped testing after 4 runs cuz the temps were around 75

//Edit. Prime just failed after 1-2 min with error

//Edit.2 With prime the temps were only at 52-54 max... i am confused... the difference of 20 degrees is huge!
Edited by Kuyumdzhiev - 3/6/11 at 2:39pm
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post #15 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
With the settings above and with intel burn test I've stopped testing after 4 runs cuz the temps were around 75

Edit. Prime just failed after 1-2 min with error
Yes, Intel Burn Test does that to your temps. In contradiction to what Intel says, let the 10 passes do their thing. I easily get temps of high 80's on my E8500 @ 4265.9MHz 1.448v while running the test. Intel Burn Test was made to use everything in your processor and push it 100%, therefore giving higher temps, and a more reliable outcome than any other stability test.

Hmm.. your vcore reads 1.376v. Did you enable LLC?

edit: to quote Psychlone on Guru3D forum:
"I don't trust a system to be completely stable unless it will pass a 24 hour run of Orthos Stressprime "Blend" at priority10, but if you just want to see how hot your system can possibly get, Linpack (IBT or Intel Burn Test) is the best. It will heat your system up faster than anything else, and it has a better chance of creating higher temps than anything else.
Only issue I have with IBT is that it only runs for roughly 600 seconds (depending on your CPU speed), and I refuse to trust a stability application that is limited in that way - even though it runs your rig hotter and faster than anything else, I've seen rigs fail a simple Prime95 in 20 hours where it passed 5 consecutive runs of IBT.

No matter what program you use, ensure you're paying very close attention to your full-load temps of the cores of your CPU, not the 'CPU' temp...there's a difference. The core temps are the actual temperatures of the cores on the CPU, and what most monitoring apps call 'CPU' is actually the socket itself, not the CPU. The socket can easily be 10*C lower than the actual cores - so it's the cores that you need to be paying attention to.

Foxconn's own monitoring software does a decent enough job, but you should back that up with CoreTemp as well as Everest Ultimate just to ensure you've got correct readings from your sensors.

DO NOT RUN ANY STABILITY PROGRAM WITHOUT MONITORING SOFTWARE RUNNING!"
Edited by DChat - 3/6/11 at 2:51pm
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post #16 of 98
Thread Starter 
Quote:
Originally Posted by DChat View Post
Yes, Intel Burn Test does that to your temps. In contradiction to what Intel says, let the 10 passes do their thing. I easily get temps of high 80's on my E8500 @ 4265.9MHz 1.448v while running the test. Intel Burn Test was made to use everything in your processor and push it 100%, therefore giving higher temps, and a more reliable outcome than any other stability test.

Hmm.. your vcore reads 1.376v. Did you enable LLC?
Yes I did, no idea why it doesn't read it as it is in the bios. CPU PLL Voltage cant be set to 1.3, lowest possible is 1.5 highest 2.1 i think. I will let Intel burn test to finish, but i am curious why Prime failed with error, i've no idea where the problem might be...
Edited by Kuyumdzhiev - 3/6/11 at 2:53pm
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post #17 of 98
What is your VTT at?

I'm always saying this, but bump your CPU multiple DOWN a couple notches and see what kind of FSB your board can do. Your CPU should be able to handle 4.0 on less than 1.4V.

Find your FSB max, and if it's only 430 or so you can try tuning a little with NB voltage and VTT. Don't go more than 1.4V on NB and keep VTT under your VCore setting. Bump VCore down to 1.36 after you decrease your CPU multiple.

After we know your FSB max we can figure things out better.
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post #18 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
Yes I did, no idea why it doesn't read it as it is in the bios. CPU PLL Voltage cant be set to 1.3, lowest possible is 1.5 highest 2.1 i think. I will let Intel burn test to finish, but i am curious why Prime failed with error, i've no idea where the problem might be...
My mistake on the PLL voltage. 1.5v is perfect for the E8400. Try to get a vcore reading of 1.4v in cpuz. Your vdroop is -0.024 so in your bios you'd have to increase your vcore to read 1.424ish to get a near perfect 1.4v, but i'd do that only if the Burn Test gives an error.
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post #19 of 98
Thread Starter 
I've set CPU PLL to 1.5v and lowerd the vcore to 1.3824 and now almost 10 mins Prime95 doesnt read any problems temps are around 53-56 max 58. I will do IBT test after this to check the stability. Should i use the maximum memory for the test?
Edited by Kuyumdzhiev - 3/6/11 at 3:27pm
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post #20 of 98
Quote:
Originally Posted by Kuyumdzhiev View Post
I've set CPU PLL to 1.5v and lowerd the vcore to 1.3824 and now almost 10 mins Prime95 doesnt read any problems temps are around 53-56 max 58. I will do IBT test after this to check the stability. Should i use the maximum memory for the test?
Progress in the making

How long do you intend on running Prime95?
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