**Official e8400/e8500 Retail OC Thread

[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

[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.

[Zucker2k]

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.

You'll need to get better cooling to run at volts that high, then you can clock higher.

[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

[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