**Official e8400/e8500 Retail OC Thread

[mrcape]

I wonder the same about P35 vs 38. I have tried everything with this chip and it needs a lot of vcore to be stable at high speeds. Like I said, >1.43v to get 4.2ghz prime stable.

So is it the chip or the chipset? Hmm, I have been tempted to pop this in the P5E but I want to return for refund so I dunno.

Aren't there some sponsored benchers out there who can confirm or deny the performance diff between P35 and X38 by using the same chip in two boards with settings as close as possible?

[GLENBOY]

got prime running now testing 500x9 with 1.45volts
26mins small ffts no errors yet

very nice what temps does it max out at high 50s

[GOESA]

E8400
Asus P5B Deluxe 450FSB





Stepping is : Q744A761

I have got the exact samme stepping as you, getting 4ghz primestabil is hard even with 1.45v on my GA-P35-DS3 board.

/Grau

[icywater]

E8400
Asus P5B Deluxe 450FSB





Stepping is : Q744A761

that is a lot of volt to get to 4050Mhz, with that volt I got 4200MHz on the same board as yours.

[Infa]

well All CPU's arent the same

[Grnfinger]

very nice what temps does it max out at high 50s

core 1 is 59c core 2 is 57c
I hit 62-3 when the furnace is on

had a error on core 2 and had to up the volts to 1.47, looks promising this time around

[GLENBOY]

yes Grnfinger its an excellent overclock that these new e series really rock and amazing value for the performance

[X.T.R.E.M.E_ICE]

Thanks, great chip!
Saw a letter "T" on lowfat's batch code as well, again, it seems to be on all Canuck and Aussie chips

no T on my Chip. I am from Australia.

[Grnfinger]

yes Grnfinger its an excellent overclock that these new e series really rock and amazing value for the performance

3DMark scores are down about 500 points compared to the quad core but for the $$ you are right an excellent value.

[GLENBOY]

what will it do the 3dmarks at 4500mhz, thanks

[Sepander]

Q746A349
VID: 1.0375V
Pack Date: 01/09/08

Cooling: water

[GLENBOY]

very quick sepander nearly 5ghz on water , nice one mate again what will it do 3dmarks at, and what norhbridge volts did you use, i notice its a very low default vid as well good chip there

[Sepander]

Thanks.
Here's some 3dmark results:
3dmark2001SE
3dmark05
3dmark06

NB voltage was 1.65V.

[GLENBOY]

thanks sepander yes it seems you've got a golden chip there excellent 3d scores especially for single card and high cpu clock for the 3dmarks most seem to top out at 4650 with higher volts needed, i think the ones with the lower vid value like yours should in general go a bit further than the general ones which i think are 1.125 volt vid, i hope i am as lucky as you with the cpu i get monday

[C-N]

I just posted this on another thread so I'll just link to it.

http://www.xtremesystems.org/forums/...postcount=3467

E8400 @ 500 X 8 = 4GHz 1.4v in bios 1.425v in CPU-Z

Q744A761 / wafer 544 I think from memory!!

VID changes with different BIOS's

Water cooled.

[avrionis]

How can you tell what is your Vid!

My box has a 1.225V max number next to the version is that the VID or do I look at the COREtemp program which indicates a 1.100V for the VID

[soki]

E8400
Q750A039
prime stable 4284Mhz @1.46V @ Thermalright Ultra 120 (Coretemp shows over 90oC but I think it reads wrong)
Mobo Gigabyte P35-DS3 with vdroop mod

Max 1million pi calculation

[Brian y.]

Does anybody have an idea of where the cold bug starts on these CPU's?

[Grnfinger]

How can you tell what is your Vid!

My box has a 1.225V max number next to the version is that the VID or do I look at the COREtemp program which indicates a 1.100V for the VID

coretemp will display the VID
1.1 nice VID

[C-N]

COREtemp program which indicates a 1.100V for the VID

Yup

CN

[CanadianTSi]

How can you tell what is your Vid!

My box has a 1.225V max number next to the version is that the VID or do I look at the COREtemp program which indicates a 1.100V for the VID

Beaten to it, I'm slow...

[avrionis]

Does not seem a great cpu! Can only go about 4.6 but with very high Vcore and my WC setup heats up past 65'ish! Also, Have tried to up the volts to 1.6 and I still cannot reach 4.7G

I am 4.3G Vcore 1.36 prime stable with 50ish & core1 56 core2 51 temps on load.

[mrcape]

Does not seem a great cpu! Can only go about 4.6 but with very high Vcore and my WC setup heats up past 65'ish! Also, Have tried to up the volts to 1.6 and I still cannot reach 4.7G

I am 4.3G Vcore 1.36 prime stable with 50ish & core1 56 core2 51 temps on load.

Prime stable how long? That's not bad compared to most.

[Xvys]

Originally Posted by Grnfinger

FPO/BATCH# Q740A553T
Version# E27439-001
Pack Date 12/20/07

I gots nearly the same E8400:

FPO/BATCH# Q740A555T
Version# E27439-001
Pack Date 12/20/07

I wonder if anybody has a Q739 or earlier, or is Q740 the first run? I normally shop at NCIX, but I got mine last Sat. for $20 cheaper. A-Power exchanged my first E8400 with wonky temp readings for a new one from the exact same batch. Fortunately this one reads 38/36C at idle (4.05 GHz) and about 50C in Prime95.
Bios:
vCore: 1.35v
vDimm: 2.0v
FSB Term: 1.2v
CPU PLL: 1.4v
NorthB: 1.25v

All other voltages on Auto at 450FSB. I had it up to 4.45GHz with no problems, but requires too much voltage and heat for everyday use. Here is my 24/7 setup which is stable and cool. I wonder why my latencies are so slow compared to some others? I've tried upping freq. to over 1300MHz, but still 52ns is best it can do?

-----------------------------------------------------
Asus P5K Deluxe / E8400 / 2G Crucial 10th Anniv. / ATI 1950pro / Ultra120 Extreme / FSP FX600-E/ CM690

[Forsaken1]

P35 does ok.Open window.Water cooled.dinos22,guess the ambient .
Abit IP35 PRO 14
4HRS Prime.

http://valid.x86-secret.com/show_oc.php?id=304246