Wolfdale/Yorkfield overclocking thread... - Page 2

***Zardon*** · Feb 3, 2008, 08:30 AM

out of curiousity Panging, what voltage would you consider to be a relatively safe 24/7 setting for a wolfie or yorkie?

PangingJr · Feb 3, 2008, 09:09 AM

i'm sorry i really don't know (yet) Zardon.
all i know for sure is what Intel has spec'ed all of the already released Wolfdale's at 1.3625V for max core-voltage.
as of now, myself try to use not more than 1.3625V.

btw, some of the Wolfdale's E8200 and E8400 are able to be overclocked quite high when using core-voltage at not more than 1.3625V,
but some of them won't overclock high at all with 1.3625V.

some of E8200's are able to clock at 3.6 GHz with only 1.25V. and many E8200's out there won't do the same.
same with E8400's processors, as i have been seeing many of them will get 4.0 GHz with core-voltage of only 1.28V-1.325V. and some of the E8400 won't do 4.0 GHz with these low core-voltages.

however, as you may have noticed before that on the previous C2D's processors, the max core-voltage used to be spec'ed by Intel to something around 1.325V -1.350V then if i can recall corectly, all of the C2D's processors spec has been changed to 1.500V for the max core-voltage. and as far as i know, some certain OEM built computers that uses the C2D processors model before Wolfdale's even use 1.50V as default core-voltage on some of their custom built computers. i'm not sure whether or not these OEM companies would get an info from Intel about the a real safe max core-voltage for the Wolfdale's, i'll have to ask around for it when i can.

***Zardon*** · Feb 3, 2008, 09:42 AM

ive been trying to get a defacto answer in relation to the new quad core cpus (yorkfield) and the wolfies. various trains of thought on it. Intel are slow getting back to me.

I can get the skulltrail system stable at 4.2ghz however the voltage is around 1.48 which seems a little high to me.

**ChaosMinionX** · Feb 3, 2008, 04:14 PM

I personally will not go over 1.45v on water with a Yorkie. I may change that after I get this rig up and start playing with it though.

But I have seen some dead Penryns on various forums from high voltages, regardless of cooling.

Would be interested to hear what Intel has to say Z.

***Zardon*** · Feb 3, 2008, 05:19 PM

Quote:

Originally Posted by ChaosMinionX

Would be interested to hear what Intel has to say Z.

well considering the built in "overvolt" option on the skulltrail bios increases voltage from 1.25 to 1.48 I would be interested myself. I can't see intel supplying an option in one of their new bioses which in fact kills their cpu's. Then again i have an alpha bios on this, so its hard to know whats a work in progress or what is intentional.

**ChaosMinionX** · Feb 4, 2008, 02:48 PM

I was looking at some reviews today, boy if skulltrail didnt use FBD, I would be all over it.....I like my fast RAM

They need to release a dual socket X48 for LGA775 and I would be in heaven with dual QX9650's at like 450x9

***Zardon*** · Feb 4, 2008, 06:49 PM

Quote:

Originally Posted by ChaosMinionX

I was looking at some reviews today, boy if skulltrail didnt use FBD, I would be all over it.....I like my fast RAM

What apps specifically do you find benefit you with (im guessing as its you), high end DDR3?

Zelig · Feb 4, 2008, 07:22 PM

Quote:

Originally Posted by Zardon

What apps specifically do you find benefit you with (im guessing as its you), high end DDR3?

Superpi.

**ChaosMinionX** · Feb 4, 2008, 08:18 PM

Quote:

Originally Posted by Zelig

Superpi.

Precisely

That and some other synthetic benching, I am actually using 4GB of Corsair Dominator 8888C4DF atm.... moving to DDR3 with Asus Rampage (x48 though) with DDR3 Dominator 1800C7DIN

PangingJr · Feb 18, 2008, 07:29 AM

.5 multi overclocks...

P35-DS4 BIOS F12b with .5 CPU multi support.
Thanks to Gigabyte's technical support personnel for providing me this F12b BIOS for testing.

MCH at 1.25V (stock)...

400x7.5... 3.00 GHz 4:5 DDR1000

444x7.5... 3.33 GHz 5:6 DDR1066

467x7.5... 3.50 GHz 5:6 DDR1121

480x7.5... 3.60 GHz 4:5 DDR1200

--------------------------------

500x7.5 (MCH 1.425V)... 3.75 GHz 5:6 DDR1200

550x7.5 (MCH 1.50V)... 4.13 GHz 1:1 DDR1100

***Zardon*** · Feb 18, 2008, 08:25 AM

Quote:

Originally Posted by ChaosMinionX

Precisely

That and some other synthetic benching, I am actually using 4GB of Corsair Dominator 8888C4DF atm.... moving to DDR3 with Asus Rampage (x48 though) with DDR3 Dominator 1800C7DIN

Ah right, thats cool for a moment I thought it was something utterly worthless ......

PangingJr · Feb 18, 2008, 09:30 AM

here (below) is some info i found so far about retail Wolfdales's FPO/BATCH# that have some good overclocking and with low core voltage use.

E8200 that has FPO/BATCH# Q740A***T (i think this is one of the first batch released), as far as i know, CPU will need a high core voltage to overclock it above 450 (CPU FSB) or so.
E8500 Q740A***T, however, are very good overclocker CPUs.

===============================

Quote:

Intel is holding back on releasing E8500 inventory - hwbot.org

Here, in Romania, it was something like this:

20th Jan - A shipment with lots of E8200, ~10 E8400 and a few (5-10) E8500 was out on the market, and instantly sold out.

E8200 - Q740A - it was pretty weak for o/c. I mean...very low temps, good for daily use, but most off them stopped at ~4300Mhz on air.

E8400 - Don't know much about these ones, medium oc'ers I suppose.

E8500 - Q740A - Good overclokers, very high FSB (580 on air), pretty decent volts for Orthos @ 4Ghz-4,3Ghz

28th Jan - a shipment with E8400 came on the market, something like 30 pcs. Of course, they instantly sold out

E8400 - Q746A - Great oc'ers, would easily do 4700-4800 air cooled with normal temps, very low volts needed for Orthos at highs clocks. Very hot Cpu's though ( I own one of these)

Since then, they keep on bringing small numbers of CPU's, and they sell them like hot bread. I don't know what's up with this, I mean..everybody is trying to get one of these, and Intel certainly have stock (they are producing them at least since November 2007). why they are not throwing them on the market with full force....this I don't know

Quote:

XtremeSystems Forums - View Single Post - E8200 doing 600x8 on air with 1.488V

Now we have 3 good E8200

Q744A736 = 4Ghz @ 1.208v (VID 1.0875v)
Q745A705 = 4Ghz @ 1.184v (VID 1.0750v)
Q745A706 = 4Ghz @ 1.216v (VID 1.0875v)

***Zardon*** · Feb 18, 2008, 12:50 PM

pretty good core voltages. takes me almost 1.5v to get the Skulltrail CPUs to 4.2ghz.

**ChaosMinionX** · Feb 18, 2008, 02:14 PM

Quote:

Originally Posted by Zardon

Ah right, thats cool for a moment I thought it was something utterly worthless ......

Exilon · Feb 27, 2008, 11:10 PM

Quote:

Originally Posted by Zardon

out of curiousity Panging, what voltage would you consider to be a relatively safe 24/7 setting for a wolfie or yorkie?

As far as I know, Intel has specified 1.45v as the absolute limit for 45nm Core 2 Duos beyond which there will be almost certain damage to the CPU even if it is brought below 1.45v. Intel defines 1.3625v to 1.45v as the range where stability or longevity cannot be guaranteed. To play it safe until more information come out, stay below 1.3625v.