Overclocked my Retail E8400...WOW!

[jcniest5]

Regarding the E8400, has anyone notice how much difference of temperature between core 0 and core 1 on their processor? My core 0 runs 6-12 degrees hotter than core 1. I tried to exchange it at the local MC store here, but the arrogant people there said there is absolutely nothing wrong with one core running hotter than the other.

[BlueAqua]

I get about the same, but more like 8C difference. I don't think Microcenter should let you return it either, how big of difference does it make? Does it run stock? Take it up with Intel and see what they say.

[G4h4o8s6T]

Wouldn't it be more likely that whatever program your using to monitor temps is off, rather than something wrong with the CPU??

[|SiLA|]

here is my on air

[IMG]http://img401.imageshack.us/img401/4195/pi1mv5.jpg[/IG]

and this 1 is on SS

[IMG]http://img292.imageshack.us/img292/4816/pi1muf9.jpg[/MG]

I reached the limit of my P5B-D can't go any more.

what's your batch?

[naokaji]

Regarding the E8400, has anyone notice how much difference of temperature between core 0 and core 1 on their processor? My core 0 runs 6-12 degrees hotter than core 1. I tried to exchange it at the local MC store here, but the arrogant people there said there is absolutely nothing wrong with one core running hotter than the other.

if it does stock speed stable then there is no reason for them to exchange it...

[g1raffe]

At idle I have a 4 degree temp difference, at load the cores are about equal.

[jcniest5]

I get about the same, but more like 8C difference. I don't think Microcenter should let you return it either, how big of difference does it make? Does it run stock? Take it up with Intel and see what they say.

I did file a complaint (or request for assistance) with Intel on their site. On mine, at idle, it's a difference of 7-12 degrees. At underloaded, it's 5-8 difference. I've used three difference programs to monitor and they all have the same reading, surely not all of them are wrong, can they?

[jcniest5]

Wouldn't it be more likely that whatever program your using to monitor temps is off, rather than something wrong with the CPU??

Sure three programs can't all be wrong, can they?

[tet5uo]

Yeah, they really could be wrong

[Xvys]

I think the vast difference in core temps is due to bios issues, which are reading the temps incorrectly. I have one core reading 6C below room temperature. Now I have a lot of airflow in my CM690 case, but I doubt the one core really idles that cool. Not sure if this is specific to Asus P5K's or all P35's, or affects all mb's?

[jessethebody]

i just installed my new 8400 and im gettin a temp difference of 10+ between the 2 cores on coretemp, smart guardian is readin 5c under ambient and so is bios so......i think software aint calibrated for these yet maybe

[Danger30Q]

You will NEVER get a chip where both cores (or all 4 cores) are exactly the same. You will be extremely lucky if the only differ by 3-4 degrees. If you are absolutely that concerned about the difference, then get better cooling or remove the IHS.

[worth]

here is my on air

http://img401.imageshack.us/img401/4195/pi1mv5.jpg

and this 1 is on SS

http://img292.imageshack.us/img292/4816/pi1muf9.jpg

I reached the limit of my P5B-D can't go any more.

Are you really giving it 1.42V? Isn't that a bit much?

[turtleonviagra]

How are the half multipliers working with these chips/boards? Like 7.5x?

[road-runner]

Any long stability test?

[Zeus]

Are you really giving it 1.42V? Isn't that a bit much?

You must be joking right?

[jcniest5]

You will NEVER get a chip where both cores (or all 4 cores) are exactly the same. You will be extremely lucky if the only differ by 3-4 degrees. If you are absolutely that concerned about the difference, then get better cooling or remove the IHS.

My E6600 has both cores running almost the same temp (with only 1-2 difference and never more than that).

[NaeKuh]

since when was ocing for Clocks not to get WR considered VALID without a long term PRIME95 run?


You guys need to all STRESS TEST PRIME 7hours+ to prove your OC's are rock solid. This has always been a XS requirement to most of us unless your going for World Records.

You will NEVER get a chip where both cores (or all 4 cores) are exactly the same. You will be extremely lucky if the only differ by 3-4 degrees. If you are absolutely that concerned about the difference, then get better cooling or remove the IHS.

never say never:

Also maybe you guys forgot this little thread?
http://www.xtremesystems.org/forums/...48#post1973448

[down8]

Regarding the E8400, has anyone notice how much difference of temperature between core 0 and core 1 on their processor? My core 0 runs 6-12 degrees hotter than core 1. I tried to exchange it at the local MC store here, but the arrogant people there said there is absolutely nothing wrong with one core running hotter than the other.

Have you checked (and re-checked) the HSF mounting? That big a diff is likely a mismount issue.

-bZj

[jcniest5]

Have you checked (and re-checked) the HSF mounting? That big a diff is likely a mismount issue.

-bZj

I thought I stated that I already try a few times of reapplying the thermal paste and reseating the heatsink...I don't it's mounting error after four or five times of doing that.

[icywater]

Are you really giving it 1.42V? Isn't that a bit much?

1.42v is nothing, I also tried 4350Mhz 1.456v ortho for 2 hours, too bad it bomded out, i thing the heat got to it, The cores hit 82 degreeC.

[deadlock7]

I know many people that have a difference of 10 degrees between cores at Wolfdales.Some of them have very ocable cpus,so i don't think that it should bother us..

[Xvys]

How are the half multipliers working with these chips/boards? Like 7.5x?

I had no luck with 8.5. I could select it in the bios, but it would get hung up and Windows would not load. Even when I tried at 500FSB with lots of voltage, no luck. I guess it's not really necessary as I can get 4.4Ghz with 9 multiplier with ease.

I am still getting up to 17C difference in my two cores. I suspect this is a motherboard issue which could be corrected with a bios fix. At least it is erring downward as I doubt the core is really 7C below ambient temperature, even if the heatsink was misaligned.

[icywater]

I tried 8.5 on my board workwell. Here is what I got so far on air.

[Xvys]

I tried knocking the FSB down a bit also, Icywater, as it requires much less voltage to get stable. Still much more testing to be done at 8 and 8.5 multipliers at a higher FSB.