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Overclocking e8400 step by step help... biostar tpower i45

post #1 of 21
Thread Starter 
well ive put alot of time into trying to overclock this, and ive read a ton of forums, reviews, helps and finally decided that i need more help then that. i am unsure if i am doing this correctly, or if i have faulty equiptment. i'm asking for a basic walkthrough on what to do and what to look for... step by step would be nice.

Here are my Comp Specs-
Mobo: Biostar Tpower I45
CPU: E8400 E0
Mem: OCZ Reaper 2x2g DDR2 1066
GPU: Gigabyte 9800gtx+ 1g
HD: 500g Seagate
Case: CollerMaster HAF 932
CPU Cooler: Zalman 9700 LED (with AS5)
NB Cooler: mobo came with Larger HSF for NB which i put on with AS5

i would like to get 4.0+ghz stable under 60c with 65c max. keep in mind that this is the mobo with 675 stable FSB with an e8400 @ 6.0 ghz, so i know its suppose to be a good combination.

i know how to use all the software and change stuff in bios and take screenshots and pics of it all, its just Prime95 keeps failing over ~3.6 i even bumped all the voltages up to a little under 1.5v which is too high and scary for me... gave me really high temps too

I suppose a good starting point would be for me to find the "Auto" voltages of the Vnb, Vcore, and Vfsb. and the temps for those idle and load

let me know if anymore information is needed and thx in advance for the help
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Pwnzor
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post #2 of 21
Thread Starter 
Ok. i put the Voltages on Auto and took the clock down to stock. i kept the ddr2 @ 2.128V and 533 frequency (1066). they are rated 1066 @2.1v. i saved bios and restarted and noted down what the bios said the Voltages are.

Vcore-1.200
Vchipset-1.088
Vfsb-1.104
Vram-2.128

logged into windows and started up HWM and took down idle temp and then loaded it with orthos and got the load temp here is a pic of the stuff..



and now the software that came with the mobo...



now i guess i start raising the FSB until i get an unstable clock? i will throttle the Ram back to under 1066 so it wont be the factor
Pwnzor
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Pwnzor
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post #3 of 21
I would back the RAM down to DDR2 800, to give you some headroom in that department.

Make sure all of the BIOS options like C1E, Speedstep, all of that crap are disabled, or you will get false speed readings.

Go into the BIOS, make sure your RAM is linked to the lowest speed (mine is a 333/400 link, your's may be 1:1 or something, depends on the mobo). Then, raise your FSB 10 MHz at a time. Just use it normally for a while, see if it crashes. If it doesn't, use a stress test and test it for maybe 15 minutes. If it still doesn't crash, go into the BIOS and raise it another 10 MHz.

When you get your first crash, raise your CPU VID 1 notch, and try again. Then, keep repeating that.

Just as a ballpark for settings outside of the CPU to get a high CPU OC, set RAM timings to 5-5-5-15, and the RAM voltage to probably 2.0V. Set the NB Voltage to 1.4V or something close, and go from there.
post #4 of 21
Thread Starter 
Quote:
Originally Posted by pow3rtr1p View Post
I would back the RAM down to DDR2 800, to give you some headroom in that department.

Make sure all of the BIOS options like C1E, Speedstep, all of that crap are disabled, or you will get false speed readings.

Go into the BIOS, make sure your RAM is linked to the lowest speed (mine is a 333/400 link, your's may be 1:1 or something, depends on the mobo). Then, raise your FSB 10 MHz at a time. Just use it normally for a while, see if it crashes. If it doesn't, use a stress test and test it for maybe 15 minutes. If it still doesn't crash, go into the BIOS and raise it another 10 MHz.

When you get your first crash, raise your CPU VID 1 notch, and try again. Then, keep repeating that.

Just as a ballpark for settings outside of the CPU to get a high CPU OC, set RAM timings to 5-5-5-15, and the RAM voltage to probably 2.0V. Set the NB Voltage to 1.4V or something close, and go from there.
Yup all of that stuff is disabled and i have the ram @ 5-5-5-15 @2.128 and running them well below 1066

so i need to set my Vnb to about 1.4 from the start? what about Vfsb?
Pwnzor
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Pwnzor
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post #5 of 21
Hmmm, I am not sure what the VFSB is. However, don't use the software to OC. It isn't as stable, it's annoying to reset every time you boot up, and it makes more problems than it's worth. Just use the BIOS options.

Here's a beginner's guide: http://www.overclock.net/intel-cpus/...ing-guide.html
post #6 of 21
Thread Starter 
Quote:
Originally Posted by pow3rtr1p View Post
Hmmm, I am not sure what the VFSB is. However, don't use the software to OC. It isn't as stable, it's annoying to reset every time you boot up, and it makes more problems than it's worth. Just use the BIOS options.

Here's a beginner's guide: http://www.overclock.net/intel-cpus/...ing-guide.html
nah i do it thru bios... just use this to stress it and collect info

i changed the voltages to +.025 from auto so it wouldnt up the voltages when i raise the clock... new voltages are as follows in bios-

Vcore-1.224
Vnb-1.112
Vfsb-1.128
Vram-2.128 (same as before)

i raised the bus to 355x9... idle temp was still 37c here is the info



i am going to raise the Vnb to 1.4 and keep testing 10 at a time till i get instability. i will post back when that happens
Pwnzor
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Pwnzor
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post #7 of 21
Thread Starter 
ok... i kept going up by 11 clock last night and the last test i ran 445x9 for almost 8 hrs at 1.224 Vcore and 1.408 Vnb. when i went to 456x9 i got erros from Orthos in the two tests i did (less then 25 mins to failure). so i raised the Vcore up by .025 to 1.248 and started testing again. been running steady at 456x9 for 26 minutes and climbing. i havent gotten a load temp of over 52c on that setting yet. im well over the 4.0ghz mark. im going to push it a little further and see what i can get.

after i find my clock that runs stable, i guess then i can up the speed of the ram and memtest it and make sure. the ram OC functions are very minimal on this mobo, so i will do the best i can.

i think on the OC run i had before where i couldnt get stable was because i raised the Vfsb up and the other ones... for some reason i think this mobo likes lower voltages for overclocking. and i think my chipset Temp sensor is screwed up... it hovers around 17-20c which is 68f and the temp of my house is around 75f...

im going to end 456x9 at 30 mins and try to pump it up to 467x9... maybe i should lower my stepping to 5 or 6 now... i was doing 10 because it is approx 100mhz jump. i will take a picture of that clock and post it. stay tuned and thx for the help
Pwnzor
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Pwnzor
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post #8 of 21
Thread Starter 
Failed on 467x9 @ 1.248 Vcore so i lowered it down to 461x9 and it still failed after 30 mins. i upped the Vcore another .025 and is now 1.272 running 461x9... testing, i'm assuming at some point im going to hit a wall and i would need to increase the Vnb. i'm not sure how much above 1.4V on Vnb i should go with my lil 45nm core...
Pwnzor
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Pwnzor
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Crucial 64g SSD, WD Caviar Black 640GB and 2 LG and ASUS burners Vista Home 64 2 x SCEPTRE 22" Wide 
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post #9 of 21
The NB should be safe up to maybe 1.45V, but you may want to think about aftermarket NB cooling soon. Sounds like your CPU is a beast, though. You got 4GHz at 1.22V, and that's quite a feat. I need close to that voltage to keep my CPU stable at 3.6 GHz. Your CPU should be safe up to 1.35V or so, so I would keep trying to pump it up. If you increase the NB Voltage and it gets stable, then I would back it off for a little bit until you can get a better NB cooler, and then go for it again. I wouldn't want to run the NB at a much higher voltage 24/7 on stock cooling, though.
post #10 of 21
Thread Starter 
Quote:
Originally Posted by pow3rtr1p View Post
The NB should be safe up to maybe 1.45V, but you may want to think about aftermarket NB cooling soon. Sounds like your CPU is a beast, though. You got 4GHz at 1.22V, and that's quite a feat. I need close to that voltage to keep my CPU stable at 3.6 GHz. Your CPU should be safe up to 1.35V or so, so I would keep trying to pump it up. If you increase the NB Voltage and it gets stable, then I would back it off for a little bit until you can get a better NB cooler, and then go for it again. I wouldn't want to run the NB at a much higher voltage 24/7 on stock cooling, though.
i would really like to know which temp is the NB temp... i hope it isnt the one on MBM and speedfan and my software that came with the mobo that reads below 20c... i think the sensor is messed up. is there anyway to tell what TMPIN # is for the NB? i got the mobo as open box, so i dont think i can return it. its been over a month. the heatsink on it seems beastly enough...
Pwnzor
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CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte EP45-UD3P 5850 4 x 2GB OCZ Reaper DDR2 1066 
Hard DriveOptical DriveOSMonitor
Crucial 64g SSD, WD Caviar Black 640GB and 2 LG and ASUS burners Vista Home 64 2 x SCEPTRE 22" Wide 
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Logitech Mutimedia Thermaltake Toughpower 700W modular Cooler Master Storm Scout Cooler Master Inferno 
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Pwnzor
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CPUMotherboardGraphicsRAM
E8400 E0 Gigabyte EP45-UD3P 5850 4 x 2GB OCZ Reaper DDR2 1066 
Hard DriveOptical DriveOSMonitor
Crucial 64g SSD, WD Caviar Black 640GB and 2 LG and ASUS burners Vista Home 64 2 x SCEPTRE 22" Wide 
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Logitech Mutimedia Thermaltake Toughpower 700W modular Cooler Master Storm Scout Cooler Master Inferno 
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