Kentsfield @ 3700mhz 4 x prime stable under air

**PcCI2iminal** · 12-02-2006, 08:54 PM

CPU: Kentsfield QX6700 L638 retail box
MB: P5B DLX WiFi (0804)
Bios 1: Vcore 1.63v(load 1.45v),vFSB 1.45v,vNB minimum,VSB minimum
Bios 2: PCIEx 100mhz,CPU settings all disabled
CPU Cooler: Scythe Infinity
Fan: Sanyo Denki F12-HHH 6000rpm @ 260CFM
VGA: Elsa 940(6800U) @ 450/1250(24/7) water(Innovatek + Reserator)
MEM: Crucial 6400 4-4-4-8(2.15v) & Corsair Value 4-4-4-12(2.3v)
HDD: Hitachi 80gb 7200rpm
PSU: Zippy [GE] 500w
SO: Windows XP Pro SP2

**sierra_bound** · 12-02-2006, 10:48 PM

Nice chip

**thecake90** · 12-02-2006, 10:58 PM

Not bad, not bad at all
Is the default Multiplier 10?

**dinos22** · 12-02-2006, 10:59 PM

nice? >> more like monster chip

**fhpchris** · 12-03-2006, 12:05 AM

Originally Posted by thecake90

Not bad, not bad at all
Is the default Multiplier 10?

yes....Its a QX6700

**ettis** · 12-03-2006, 05:16 AM

Is vcore 1.63 or 1.45?

**blossa** · 12-03-2006, 05:42 AM

I do not know if you had the chance to compare this cpu with a B0...? But does this B3 feels 'great'? The reason I ask is that I am thinking about replacing my B0 with a B3... But As my B0 feels rather good already I do not know what to do.

I have not tried testing prime but I have ran ALOT of test under air at 3725MHz with my B0. Roomtemp about 20 degrees. Example from a few month back:

I will try better cooling within a few days.

**Theli** · 12-03-2006, 05:50 AM

Nice overclocks!

How about showing us some Cinebench?

**blossa** · 12-03-2006, 06:03 AM

Well, it is not my thread so this will be my last posted image in this thread.

But it would be interesting to compare PcCI2iminal:s B3 with higher FSB with my B0 at 310FSB... We are quite close when looking at CPU-speed alone.

This is another 'old' run @3725, FSB@310, 1.58Vcore, ASUS P5WDG2 WS Pro:

**PcCI2iminal** · 12-03-2006, 06:10 AM

Originally Posted by ettis

Is vcore 1.63 or 1.45?

Bios set -> 1.63v
Windows idle-> 1.53v
load-> 1.45v

**PcCI2iminal** · 12-03-2006, 06:13 AM

Originally Posted by Theli

Nice overclocks!

How about showing us some Cinebench?

**blossa** · 12-03-2006, 06:17 AM

That was a huge difference in scores even though you have higher clocks this time. Thanks for sharing that!!

BTW, is that still on air?

EDIT: 3725 was about max I could reach on air with 'normal' room temp.

**PcCI2iminal** · 12-03-2006, 06:26 AM

I do not know if you had the chance to compare this cpu with a B0...?

its my first Kentsfield

The reason I ask is that I am thinking about replacing my B0 with a B3... But As my B0 feels rather good already I do not know what to do.

i think the best is wait for more users reviews

This is another 'old' run @3725, FSB@310, 1.58Vcore, ASUS P5WDG2 WS Pro

i will replace my dead P5WDG2 WS Pro for a new one from Asus and we can do a better compare
and feel free to post any screen

CPU score-> 5659
Vcore-> 1.685v
Cooling->Scythe Infinity + Sanyo Denki F12-HHH

**PcCI2iminal** · 12-03-2006, 06:29 AM

Originally Posted by blossa

That was a huge difference in scores even though you have higher clocks this time. Thanks for sharing that!!

BTW, is that still on air?

EDIT: 3725 was about max I could reach on air with 'normal' room temp.

yep this is on air

and the room temp is 10C

how about the droop on P5WDG2 WS Pro? or she works under overvolt?

**ettis** · 12-03-2006, 06:35 AM

Originally Posted by PcCI2iminal

Bios set -> 1.63v
Windows idle-> 1.53v
load-> 1.45v

That's some serious vdrop you got there...

btw. what's the maxfsb you can reach?
cheers

**PcCI2iminal** · 12-03-2006, 06:43 AM

Originally Posted by ettis

That's some seriously vdrop you got there...

btw. what's your maxfsb you can reach?
cheers

the droop is sick

about FSB
400 x 9 or lower = BSD
i need to boot in the next strap to get it stable(thanks Rol-Co for helping )
tested and passed
9 x 420
8 x 450

no boot
7 x 500

**quent** · 12-03-2006, 06:46 AM

Do you plan to test it under SS or cascade ?

Regards

**Theli** · 12-03-2006, 06:51 AM

Thanks for the benchmark!
2022 points...

Compare that to my old rig (Athlon XP 2500+ @1.9GHz) that got 200 points.

**PcCI2iminal** · 12-03-2006, 06:54 AM

Originally Posted by quent

Do you plan to test it under SS or cascade ?

Regards

dice soon as possible

**blossa** · 12-03-2006, 08:01 AM

DI is fun

I ended up @4645 with 1.75v. Raising up to 1.82 did not help so I have to get better cooling.

Unfortunatly it did that bench with cpu-z 1.37 the same hours that v1.38 was released so I can not confirm it.

It booted and was benchable at atleast 4550. anything higher than that was starting to be unstable. I have a few screenshots and photos posted from that session though:
http://www.techsweden.org/forum/viewtopic.php?t=171459

About overvoltage/undervoltage. I can not tell atm, because I have modded my board. But with BIOS 0005 it seems more correct than with the other two BIOS I have tried (witch ever that was... hrm). If I recall right one was overvolting and the other undervolting. Can it be so har to fix?

With BIOS 0005, when raising the vcore from 1.635 to 1.65 the voltage droops like a stone. I think it falls with about 0.125v... I have not found any more strange things about the voltage yet. I have heard that over 1.75v often kills the P5WDG2 WS Pro but I have been up to 1.82v so far without problems.

I does not seem to drop under load. I have done the vdrop mod but I have not touched the potentiometer. Even before the vdrop mod i think it was pretty stable.

The 'biggest' issue for me at the moment is that I can not get clockgen to work with my motherboard. It only works 'halfway' (great english!). AIBooster have some life of it owns so sometimes it drops voltages even when untouched.

About 3DMark06: Again you have higher clock than I have at my current screenshots. But even if we had the same cpu speed I think that it is the fact that you have the B3 and/or the fact that you can get higher FSB on the P5B that makes yours perform so much better. Max FSB for me is 318MHz "stable".
You get 550 cpu points more than me with a 180MHz higher clock.

It would have been nice to compare our CPUs with same board etc. I am thinking about replacing my board but I do not know with what so far.

A 680i might be the one but yet it is not 'stable' enough for me to buy it. A P5B is also an option as it is rather cheap and known to support quite high FSB with Kentsfield. It would be nice to make a "batchnumber comparision table". Maybe we can work something out.

**bazx** · 12-03-2006, 08:07 AM

PcCI2iminal can you do me a 1m @ 3.7

thanks baz

**Rol-Co** · 12-03-2006, 10:54 AM

can i compare with you ?

step 4 B0 cpu

asus p5w air

asus p5b cpu

**blossa** · 12-03-2006, 11:10 AM

Thanks for sharing! It seems like my scores are a bit low. I do not know my RAM settings at my above posted tests though...

Rol-Co: We have the same kind of cpu, have you had the chance to try the p5wdg2 ws pro board? If I remember right, your FSB is one of the highest I have seen with Kentsfield on a i975 board!

**sierra_bound** · 12-03-2006, 11:20 AM

Q6400 is good too. No tweaking.

It's been crunching WU's for the past 12 hours. Will run more tests later.

**Rol-Co** · 12-03-2006, 11:25 AM

nope
ran it on p5w dh but cpu string and multiplier change is no good with the board, 2 cores always stay on 10x

P5b is a lot better , cpu string is not good but lower multieplier is working on 4 cores, this cpu does 450 air and 500 phase fsb

gona try dfi infinnity but don't think it wil make any difference

maybe somebody can tell witch board is supporting the B0 kentsfield?? easy to see at the propperty's of this computer. please let me know.

sorry PcCI2iminal for rushing in your topic, you got a nice chip thats for sure, 4 times prime @3700 air is awesome, can you tell us what load temp you got? must be massive ...

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