**Official e8400/e8500 Retail OC Thread

[cadaveca]

I don't think they were binning properly this batch, L740A...I mean, it goes, but...I don't see anything other than 40c temps, load, idle, stock, overclocked...it's like flying blind...

[LuVPiloT]

Q746A351
24\7 on air
seems about average
Can do 4.4 @1.4v but it gets a little warm

[rge]

Can anyone with E8500 test using 9.5 multi then 9 for getting max orthos/prime stable OC. I am trying to determine if 24/7 STABLE limit is from FSB or max OC chip.

For example, say 9x478, or 4.3 is max orthos stable OC with 9 multi. If now use 9.5 multi can you get it to 4.4 orthos stable? Or was 4.3 truly the max orthos stable OC.

I am willing to pay an extra $100 on chance it would OC higher, but waiting 3 months, if indeed April is true ETA, is another story. So if .5 multi does not help in some cases, then I will go ahead and get E8400.

[mrcape]

I have 2 E8400
Q740A473T
Q740A553T

I don't know if I'm doing something wreong but they both sux
4.25ghz need 1.488v
4.0ghz need 1.36v

Tried the on 2 P5K Premium (1 old "dead now" and a brand new one)

maybe i'm missing something

Do you mean it needs those volts for prime stable? Did you try to set the gtl values like mid 60s? I'm not on the Premium (though I have one sitting here) but I needed to do that on the DFI and I've seen OPB talk about using it on his asus. Using superPi 32m and creeping those down helped me find the best point for the gtls.

I'm having a hard time getting prime stable over 4.2ghz with anything less than 1.43 volts. But it will do occt 30 minute, 3dmark06, SuperPi 32m, etc. no problem at 4.3ghz 1.4v.

[Supertim0r]

Do you mean it needs those volts for prime stable? Did you try to set the gtl values like mid 60s? I'm not on the Premium (though I have one sitting here) but I needed to do that on the DFI and I've seen OPB talk about using it on his asus. Using superPi 32m and creeping those down helped me find the best point for the gtls.

I'm having a hard time getting prime stable over 4.2ghz with anything less than 1.43 volts. But it will do occt 30 minute, 3dmark06, SuperPi 32m, etc. no problem at 4.3ghz 1.4v.

Yes I know what OPB told but .063x and .067x gave me worst results

yes I need this vcore for prime

[mrcape]

I keep mine even lower -

What about yout VTT is it set low?

I keep -

VTT - 1.20

CPU GTL1/3 REF Volt................. - 60
CPU GTL 0/2 REF Volt................ - 59
North Bridge GTL REF Volt........... - 60

[Supertim0r]

P5K Premium 0504 bios :

North Bridge GTL REF Volt (0.61x, 0.67x)
CPU GTL REF Volt (0.57x, 0.59x, 0.61x, 0.63x)

thats the GTL adjustement

I don't know about VTT and asus bios ?

I think I need a DFI... the P35 Dark is tempting... I miss the "real bios"

[CERO]

Correct , use NB GTL: 0.67x , CPU GTL REF, 0.63x, this gave me more stability on my P5K deluxe aswell!, regardless fsb i always set those values accordingly.

[Origin_Unknown]

hopefully if;

1) my psu is still under warranty
2) scan will swap it for something differend / cheaper
3) none of my parts are fried

ill get a corsair TX750 and see what my chip can do

[lowfat]

4200MHz, 8hr + orthos stable

[Supertim0r]

4200MHz, 8hr + orthos stable

my chip need the same exact vcore at this clock

[Zeus]

Mine isn't very good either:

[Grnfinger]

4300MHz 15 hours Prime stable @ very good volts 1.368

[Supertim0r]

I wonder if it's mobo related ?

Zeus, we both run Asus P35 mobo...

lots of ppl running the maximus have great results...

[Zeus]

I wonder if it's mobo related ?

Zeus, we both run Asus P35 mobo...

lots of ppl running the maximus have great results...

Nah, don't think so, i see others with P5K getting good results, i think the cpu is to blame.

[rastaseb]

grnfinger-> what's the fpo/batch of your E8400?....seems to be a roxxor this one!

[Grnfinger]

grnfinger-> what's the fpo/batch of your E8400?....seems to be a roxxor this one!

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

2 still in stock at the local store with same batch

[Supertim0r]

Nah, don't think so, i see others with P5K getting good results, i think the cpu is to blame.

I now have 3 P5K Premium (1 to rma) and 2 different step E8400. They ALL perform the same. I want to see someone on a P5K whatever model run a good (low vcore) overclock like X38/48.

i'm confident the P35 is the problem

[rastaseb]

I now have 3 P5K Premium (1 to rma) and 2 different step E8400. They ALL perform the same. I want to see someone on a P5K whatever model run a good (low vcore) overclock like X38/48.

i'm confident the P35 is the problem

less vcore needed on X38/48 than P35 at same frequencies ?

[Supertim0r]

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

I have the same chip/packdate

I can't prime at 4.3ghz at 1.45v

I'm on P35, he's on X38...

[Supertim0r]

less vcore needed on X38/48 than P35 at same frequencies ?

yes, it seems

[Zeus]

yes, it seems

It's not the board bro, it's not the board.

Check this one :

http://www.xtremesystems.org/forums/...5&postcount=90

[Supertim0r]

It's not the board bro, it's not the board.

Check this one :

http://www.xtremesystems.org/forums/...5&postcount=90

i want to see 4ghz +

I can do the same but over 4ghz+ it's an other story

[Tom|Nbk]

E8400
Asus P5B Deluxe 450FSB





Stepping is : Q744A761

[Grnfinger]

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