Overclocking E8400

[Sharp-Shooter]

Hi im new here and new to overclocking i need help

right now "so far" i have 3.8ghz stable 423*9 1700mhz fsb 2.66C

specs
E8400 C0 1.28125V(BIOS) 1.216v(WINDOWS)
EP45-DS4P mobo (p45)
2x2gb mushkin 1066 mhz memory 5-5-5-15
temps 33-47

i tried raising the voltages to a bit above 1.3v to get to 4 ghz, i can get to windows but as soon as i run Orthos it fails 5 seconds in, what do i need to do?

thanks

[gingerbee]

max vcore is 1.36 i think so. ram v and northbridge v would help

[Gellidius]

increase the voltage step by step, in small increments, testing for stability every time.

i'm sure someone else will be of greater help than i, as i've done this only once.

[Sharp-Shooter]

is there even a real world difference between 3.7ghz and 4ghz? cause i can keep my stock voltage at 3.7ghz should i just leave it at 3.7?

[Sharp-Shooter]

you know what, 3.8 is a nice number,theres only one thing i wanna know, how long will this CPU last me with these settings, i want atleast 3 years, will it survive?

[gingerbee]

almost none besides benchmarks from what i can tell. by stock voltage do you mean auto. cause sometimes auto go's way to high imo.

[gingerbee]

and if your happy with it then that's all that matters?. keep it there

[geokilla]

Originally Posted by gingerbee

max vcore is 1.36 i think so. ram v and northbridge v would help

Even though max vcore is 1.36V, many have pushed their CPUs over this limit. I'm personally comfortable with going up to 1.4Vcore in CPU-Z. Any higher then I'll start to worry.

@Sharp. You can always use OCCT and stress test the CPU for 3 hours. To me, if it passes OCCT for more than 3 hours, then it's stable.

If you've been raising the Vcore and still getting errors while keeping the CPU speed the same, try raising the FSB and MCH voltage by 0.1v. If your CPU becames stable after raising either the FSB or MCH voltage, then it could mean that there wasn't enough voltages going to either the FSB or MCH.

[Realityshift]

Max VID is 1.36 not max vcore, if you read up on your product documentation it lists 1.45 as max safe voltages hence the reason we have been running our c2ds over 1.36 vcore. Just means that these CPUs will not come with a VID of higher then 1.362 (some very unlucky people out there if they got anywhere close to that number =(..) Id have to say you have a very good overclock at a decent Vcore right now so if your happy with it there wont be any real world difference between what you have and 4ghz.

[Silvgearx]

3.7 GHZ vs 4GHZ?

Differences? Yes, for CPU hungry games you will see an increase in frames/second and video encoding you will shorten the times by a few minutes to hours

I lost 30FPS with a 2.66ghz cpu compared to a 3.8ghz