E8400 OC

[Eddie313]

I just got my E8400 and im running it at 4.0ghz on 1.30 To 1.33 volts and its stable, is it ok for a 24/7 OC ??


Thanks

 

[jeffw2767602]

yep

 

[disports]

perfectly fineeeeeeee

 

[Denithor]

What was the default (stock) vcore for your chip?

Nice OC, enjoy it.

 

[faxon]

thats pretty good for 4GHz as far as chip lifespan goes. have you run prime95 on it in both blend tests and small FTT for at least 24 hours on each test? if it fails on either one of those i would give it a bit more vcore. max for those chips (within spec) is 1.368vcore, so you still have some room to bump it up if you so desire. either way, nice OC! enjoy your Über performance while it lasts

 

[supastar1568]

Yup, mine needs 1.328 in CPU-z to get to 3.8.

Prime blend stable (24 hr) and 100 passes of IntelBurn stable.

 

[Anubis]

mine is running 4GHZ @ 1.35 volts IIRC i can check when im home, been rock solid for 8 months

 

[FalseChristian]

I'm running my C0 E8400 at 4GHz using 1.525 volts. I know this is high but I'm using a 5200 BTU air-conditioner directly blowing cold air into my case. Idle: 33C Full-load: (Prime95) 51C. Heat is the major killer of CPUs and GPUs isn't it? Not voltage.

 

[Drsignguy]

Originally posted by: FalseChristian
I'm running my C0 E8400 at 4GHz using 1.525 volts. I know this is high but I'm using a 5200 BTU air-conditioner directly blowing cold air into my case. Idle: 33C Full-load: (Prime95) 51C. Heat is the major killer of CPUs and GPUs isn't it? Not voltage.

Voltage is heat. But By removing the heat with better cooling is what you are looking for.

 

[M1A]

As everyone said thats fine 24/7 mine also is 1.3 at 4.0 but I am running at my sig settings for months now its not a 24/7 machine but think it would be fine if I chose to.....

 

[Tempered81]

Originally posted by: FalseChristian
Heat is the major killer of CPUs and GPUs isn't it? Not voltage.

voltage is more dangerous. voltage makes the heat. the chip has a PROCHOT & TM2 mode to throttle/shutdown if excess heat is detected. therefore temp overheating is preventable. over-volting can be lethal.

 

[Markfw]

1.375 24/7 for months....@100%load no less.

 

[Tempered81]

Originally posted by: m1a
As everyone said thats fine 24/7 mine also is 1.3 at 4.0 but I am running at my sig settings for months now its not a 24/7 machine but think it would be fine if I chose to.....

A C0 E8400 @ 4203mhz since January. That is a sweet overclock, m1a.

 

[Eddie313]

Thanks guys i ran Orthos for 24 hours and didnt have any errors.
I have a big Xigmatek 120mm cooler on it the temp didnt go over 131F or 55C
Thats good on the temp right?


Thanks

 

[Markfw]

yup ! Anything under 65c under full load is fine.

 

[legcramp]

Originally posted by: FalseChristian
I'm running my C0 E8400 at 4GHz using 1.525 volts. I know this is high but I'm using a 5200 BTU air-conditioner directly blowing cold air into my case. Idle: 33C Full-load: (Prime95) 51C. Heat is the major killer of CPUs and GPUs isn't it? Not voltage.

LOL, props for making the best out of a crappy overclocking chip, I bet you won't feel bad if it dies either... it deserves to die for needing that much voltage for 4ghz


Mine on the otherhand does 4ghz 1.232 othros stable overnight.. still need to play with it more when I have time to see how high it goes.

 

[JJ650]

Originally posted by: RIFLEMAN007

Originally posted by: FalseChristian
I'm running my C0 E8400 at 4GHz using 1.525 volts. I know this is high but I'm using a 5200 BTU air-conditioner directly blowing cold air into my case. Idle: 33C Full-load: (Prime95) 51C. Heat is the major killer of CPUs and GPUs isn't it? Not voltage.

LOL, props for making the best out of a crappy overclocking chip, I bet you won't feel bad if it dies either... it deserves to die for needing that much voltage for 4ghz


Mine on the otherhand does 4ghz 1.232 othros stable overnight.. still need to play with it more when I have time to see how high it goes.

I hit 4.0ghz @ 1.288 volts.

I'm debating whether or not to go higher.

 

[TheUnk]

I assume everyone states their volts based on CPU-Z and after vdrop/vdroop? Not what BIOS says of what it idles at?

Or....

 

[Tempered81]

Originally posted by: TheUnk
everyone states their volts based on CPU-Z and after vdrop/vdroop? Not what BIOS says of what it idles at?

correct. it should be cpu-z load/idle readings.

 

[supastar1568]

Originally posted by: TheUnk
I assume everyone states their volts based on CPU-Z and after vdrop/vdroop? Not what BIOS says of what it idles at?

Or....

Of course, cause its the lower value

 

[AdamK47]

I've been running my E8400 at 4.05GHz @ 1.35V since the end of January. 100% stable.

 

[disports]

E8400 4.05 GHz 1.35V in bios, 1.344V under load, 1.336V idle in cpuz

 

[brencat]

Originally posted by: smithrwon
E8400 4.05 GHz 1.35V in bios, 1.344V under load, 1.336V idle in cpuz

Nice tight voltages. Load line calibration or pencil mod?

 

[disports]

Originally posted by: brencat

Originally posted by: smithrwon
E8400 4.05 GHz 1.35V in bios, 1.344V under load, 1.336V idle in cpuz

Nice tight voltages. Load line calibration or pencil mod?

likely the former.

 

[looper]

I just received my E8400 today. How can I tell if I have "co" or "eo" stepping? Here are some of the numbers on the box:

product code- BX80570E8400
S-spec- SLB9J
MM- 899035
FPO/Batch- Q829A094
Version- E43836-001
Packdate- 9/5/2008
UPC- 735858199643


Oh, and upto what approximate OC can I get with just the stock intel HSF?

Thx...

Brian