**Official e8400/e8500 Retail OC Thread

[Leeghoofd]

There has been a new bios release for P5K board, so maybe Dlx will follow shortly...

[JoeBar]

Nice chip, JoeBar

Thanks man!

[daimojay]

@nefariouscaine

What cooling are you using though? Nb and cpu? water makes it a hell of a alot easier to get stable than air volts also?

[d.j.s.]

Ok went for my 24/7 power/performance/temp setup and am tweaked down for benching now with this chip
I only got it 4 days ago, and have a family and limited time to tinker lol though over 25+ yrs Ive had plenty.

Final settings in sig. I like that it does not get more than 10C hotter under full stress configd like this

Now onto the hardmod on the 4850 ! All cooling fans , heatsinks, and ect.. in place already , just have to find
a variable resistor to put in.

[nefariouscaine]

@nefariouscaine

What cooling are you using though? Nb and cpu? water makes it a hell of a alot easier to get stable than air volts also?

on the nb i have a small 40mm fan on the heatsink - running 100% - i have a temp sensor on that and even during 560fsb stress testing with the nb volts cranked up my sensor probe never hit over 50c which isn't bad as i had it cranked to 1.7v for those hours

on the cpu its in my sig - the Sun Beam Core Contact Freezer - but temps aren't my issue - its not like my cores are shooting up crazy high - i can boot at 4480mhz just fine - even run 1m pi some times - its just not stable and usually crashes - I could see how water might help if it was hitting 70c or so but its not even stable enough to hit those temps

now ln2/dice or chilled water - that might be another story with sub ambient temps

not sure if the board is the issue - I'm running 24/7 atm at 560fsb on 7.5x multi ofr 4200mhz - at 1.55v on the nb - about 1.392 vcore - 2.15v on the memory at 1:1 4-5-4-15 t2 - i think i have both gtl settings at .61x - transaction booster enabled at lvl2 - fsb ratio at 333

[ci2kla]

Need some help...
Currently attempting 562 x 8 = 4496Mhz @ 1.4v
E8400 Q829A234
Large FFTs stress survive more then 5 minues
but Small FFTs failed after 55 second (First Loop checkpoint)
stating Final Result Mismatch (rather then common rounding error)

Hardware as sig...GTLs all -50mv, NB GTL +40mv
what else should I try? vSB & PLL @ 1.61v VTT @ 1.28v

535x8 = 4280 Mhz pass 6 hrs ORTHOS @ 1.304v load...

[Vienna]

OMFG damn NICEEEE!

WHY oh WHY don't they sell E0s here in canada

They do, picked up an e0 e8400 from tigerdirect for $199 just yesterday

[spiderdim]

hi guys,
i find a 8500 with batch Q819A103...
is that piece good for o/c?

[Vatos_locos]

looks like and old batch....

[Leeghoofd]

hi guys,
i find a 8500 with batch Q819A103...
is that piece good for o/c?

I have no clue if this is EO or not mate, only E8500 in my list that are EO's are listed from Q820 on.... make sure you get an EO model...

[spiderdim]

at the moment which are the best batch to o/c ( for 8500 and 8400)?

should i buy an 8400 or 8500? the mobo i have is "DFI LP DK P45-T2RS Plus"

[cincyrob]

at the moment which are the best batch to o/c ( for 8500 and 8400)?

should i buy an 8400 or 8500? the mobo i have is "DFI LP DK P45-T2RS Plus"

you cant go wrong with either chip as long as it is a E0 stepping. the CO stepings are good but the newer EO stepping will let you OC easier with less volts.
if yo have the option of the EO get it no matter what CPU E8400 or the
E8500

[spiderdim]

thanks bro...
i will buy tomorrow an E0 stepping 8500

[Marvin]

yes, my C0 3970 stabe. at 1.4 v
The E0 is much better

[spiderdim]

i buy an 8500 finally with batch Q746A580.
i will post some screen shoots later

[cincyrob]

i buy an 8500 finally with batch Q746A580.
i will post some screen shoots later

from what i have found that is a CO stepping E8500.
but it is a good OCing chip so you should be ok with it getting a good 4.0ghz OC.

[Garrett]

Anyone seen Q836A368 yet? (e8400)
Got one here to test this week

[JoeBar]

Anyone seen Q836A368 yet? (e8400)
Got one here to test this week

Q836...? This is fresh...

[Quad-Damage]

C0's are not that bad they hit 4 ghz under 1.4

[JoeBar]

C0's are not that bad they hit 4 ghz under 1.4

Indeed. I have a 8400 C0 on my htpc. It can do 4.0ghz 24/7 stable with 1.39v, on air.

On a descent E0 though u can try for 4.2ghz @ that volts.

[Garrett]

Wow I just played Day of Defeat: Source for about 2 hours straight, with 1.36v and 4.5ghz on my E8400 but OMG it's one hothead... 50 idle, never goes below it, and after a minute of Orthos I get both cores @ 67c... me thinks the temp sensors are broken
Contact is perfect, my other E8400 never goes above 49 on both cores... so probably borked sensors

[cincyrob]

oh dont get me wrong i have a CO stepping E8400 i can run stable at 4.0ghz just fine.. it just takes a good effort to get it there and with 1.49v in bios giving me 1.37v actual. the EO stepping is just a better chip.

garrett. ive had 3 different CO E8400's the first 2 were like that very high temps. this one here at 4.0ghz will run around 38c at idle.. so there is something to the way they are makeing these chips/batches??????

[namegt]

E8400 E0 Q832A TEST




32PI

[So3oL4Nu]

E8400 E0 Q832A TEST




32PI

Please can you test the CPU at 4.5GHz...5GHZ it's to much...and not stable...10x !

[gurusan]

E8500
Q828A127
VID 1.25