Q9550 @ 3.8GHz stock volts

shawnj0

Junior Member
Jan 28, 2009
6
0
0
Hi guys, Just about to go to bed. It's been almost two hours (took this SS about 30 mins ago or so).

Link

Current settings in BIOS are:

FSB 450
RAM:FSB 1:1
Timings 4 4 4 12
dram static control: disabled
vcore 1.22v bios, (1.2v idle/1.19 load)
dram 2.2v
nb: 1.25v
LLC enabled (though it doesn't work on my GF's P5K)
Spread Spectrums: Disabled
everything else is on AUTO

I just have one question: With GTL refs, PLL, FSB term all on AUTO will this give a greater chance for instability, or should it do the trick?



shawnj0
 

F1shF4t

Golden Member
Oct 18, 2005
1,583
1
71
I would manually set the FSB term voltage, stock is 1.1v for 45nm chips. Don't go too much above that, I use 1.14v.

Regarding stability use Linpack. I had an overclock on my older q6600 before which was prime stable for over 8 hours, but locked up under linpack in 5 mins.
 

shawnj0

Junior Member
Jan 28, 2009
6
0
0
thanks for the tip.

I will manually set FSB term lower.


Here's an update... running prime95 for 8 hours so far.. still going.

Link
 

francisA

Member
Dec 2, 2008
153
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0
Wow, that's a nice oc at nice volts :)

I had my Q9550 @ 4.038Ghz with 1.296v which was >12hr Prime stable, 2hr OCCT stable and 30 (or was it 40) passes IBT stable. Didn't dare go lower than that as my stock VID was 1.250v.

As for the other volts, I set them manually as to what the BIOS says the defaults are. For some of 'em, the UD3P just overvolts them ridiculously.

Edit: Sorry need to edit the GHz piece. I was at 475*8.5 (4.038GHz) and not 4.38 LOL {I wish}
 

shawnj0

Junior Member
Jan 28, 2009
6
0
0
Originally posted by: francisA
Wow, that's a nice oc at nice volts :)

I had my Q9550 @ 4.38Mhz with 1.232v which was >12hr Prime stable, 2hr OCCT stable and 30 (or was it 40) passes IBT stable. Didnt dare go lower than that as my stock VID was 1.250v.

As for the other volts, I set them manually as to what the BIOS says the defaults are. For some of 'em, the UD3P just overvolts them ridiculously.

Yeah I'm just on my girlfriends p5k. Just wanted to see how far I could get with the board.

It won't let me boot into windows @ 4.0GHz no matter what vcore I use.

I will test this chip out on my P5Q when I get home, hoping to break that 4GHz barrier (475x8.5).

I suppose now for the time being i'll do OCCT or IBT
 

francisA

Member
Dec 2, 2008
153
0
0
sorry had to edit my post. The CPU Freq I posted was wrong .......... should've been 4.038GHz :)

But your vid is lower than mine so you should/can do better than what I have attained.
 

yh125d

Diamond Member
Dec 23, 2006
6,907
0
76
Originally posted by: shawnj0
Originally posted by: francisA
Wow, that's a nice oc at nice volts :)

I had my Q9550 @ 4.38Mhz with 1.232v which was >12hr Prime stable, 2hr OCCT stable and 30 (or was it 40) passes IBT stable. Didnt dare go lower than that as my stock VID was 1.250v.

As for the other volts, I set them manually as to what the BIOS says the defaults are. For some of 'em, the UD3P just overvolts them ridiculously.

Yeah I'm just on my girlfriends p5k. Just wanted to see how far I could get with the board.

It won't let me boot into windows @ 4.0GHz no matter what vcore I use.

I will test this chip out on my P5Q when I get home, hoping to break that 4GHz barrier (475x8.5).

I suppose now for the time being i'll do OCCT or IBT

You should bump the NB voltage. You'll likely need more than 1.25. I'd try 1.3 or 1.32 and see what you can get.

It's safe to push up to 1.35-1.4v on 45nm chips, but it will be hot. You'll need good cooling
 

shawnj0

Junior Member
Jan 28, 2009
6
0
0
thanks,

I tried as high as 1.4v for NB thus far.

I'm going to leave this clock as is until I can try it on another board later this week.

If i cant hit 4.0GHz with the P5Q, I may consider a new board. But 3.8 on 1.18v is fantastic, so I'm not too worried.

I would love to just really do some high suicides though.

I know the UD3P wouldn't hold me back at all!

edit:

It makes me wonder if I should try to undervolt this chip at all lol. I bet it could run under stock vid. I'm scared of undervolting lol
 

yh125d

Diamond Member
Dec 23, 2006
6,907
0
76
back in the day I ran a stock e4300 (stock VID was like 1.25 or something) at .8 volts
 

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
Originally posted by: shawnj0
thanks,

I tried as high as 1.4v for NB thus far.

I'm going to leave this clock as is until I can try it on another board later this week.

If i cant hit 4.0GHz with the P5Q, I may consider a new board. But 3.8 on 1.18v is fantastic, so I'm not too worried.

I would love to just really do some high suicides though.

I know the UD3P wouldn't hold me back at all!

edit:

It makes me wonder if I should try to undervolt this chip at all lol. I bet it could run under stock vid. I'm scared of undervolting lol

and to think days ago guys said you could only get overclocks that rival a phenom II on an expensive motherboard....

Instead I am seeing great results on inexpensive boards with the yorkfields and lackluster results with phenoms across the spectrum of boards.

Imagine if you had an unlocked multi!!! Without high fsb there would be no need for the nb vcore being 1.4v yet...plus it could eliminate any ram limitations
 

yh125d

Diamond Member
Dec 23, 2006
6,907
0
76
Theres guys here on AT running i7's and Q9550/9650 with moderate OC's (3.6 or so) with less than stock voltage
 

shawnj0

Junior Member
Jan 28, 2009
6
0
0
Originally posted by: yh125d
Theres guys here on AT running i7's and Q9550/9650 with moderate OC's (3.6 or so) with less than stock voltage

Interesting!

I'm going to go for it; it's not like I can lose anything

If anything it will run my chip cooler and consume less energy. :D

Originally posted by: Duvie
Originally posted by: shawnj0
thanks,

I tried as high as 1.4v for NB thus far.

I'm going to leave this clock as is until I can try it on another board later this week.

If i cant hit 4.0GHz with the P5Q, I may consider a new board. But 3.8 on 1.18v is fantastic, so I'm not too worried.

I would love to just really do some high suicides though.

I know the UD3P wouldn't hold me back at all!

edit:

It makes me wonder if I should try to undervolt this chip at all lol. I bet it could run under stock vid. I'm scared of undervolting lol

and to think days ago guys said you could only get overclocks that rival a phenom II on an expensive motherboard....

Instead I am seeing great results on inexpensive boards with the yorkfields and lackluster results with phenoms across the spectrum of boards.

Imagine if you had an unlocked multi!!! Without high fsb there would be no need for the nb vcore being 1.4v yet...plus it could eliminate any ram limitations

Definitely.

I'm actually using 1.25v for my NB now and I've gotten through 20 passes of IBT, 2Hrs OCCT, and 9 Hours on Prime95.

I'm going to start undervolting a little more.

I'll let you know how it goes