P35C-DS3R & Q6600 G0 - Anyone got any experience?

z0mbi3 · 1 Jun 2011 at 09:26

I just picked up a q6600 slacr g0 as an interim upgrade to my 775 rig. I've tried some initial clocking and I can only seem to get it stable at 3ghz (9x334) with a lot of voltage to the cpu.

Admittedly I've only played with clocking for about an hour or so. I can get it to post a 3.2 ghz but it's not stable. I think the ram is okay as I've been running it at stock clocks or under. Temperature is fine as well.

So anyone got any tips?

Jasonst888 · 1 Jun 2011 at 09:36

Never got my Q6600 to get past 3.2ghz.....some just can't!

What sort of voltage is a lot? 1.5v is the max you should go to, although I personally wouldn't recommend it for extensive use. 1.4v-1.425v is a good number for getting to the 3.4ghz region so I hear. Had mine at 1.425v just to get to 3.2ghz! ...I think...working off memory here!

Some basic tips:
You want to enable the Voltage Damper option.
9x333 - 3.4ghz
Voltage- mmm difficult, try 1.45 maybe, how long do you need the core to last

robnut · 1 Jun 2011 at 09:41

I Run this exact setup and have ran it at 3600mhz since I got it. 400x9 and 1.5v due to the massive vdroop on this board (1.44v in cpu-z) and iirc +0.3v on everything else? 100% stable.

z0mbi3 · 1 Jun 2011 at 12:09

robnut said:
I Run this exact setup and have ran it at 3600mhz since I got it. 400x9 and 1.5v due to the massive vdroop on this board (1.44v in cpu-z) and iirc +0.3v on everything else? 100% stable.

Nice to hear from someone with the same setup. I'll try your voltages.

Truth be told I don't care how many volts I put through it if I get the clocks.

edit: What firmware are you using?

z0mbi3 · 1 Jun 2011 at 20:21

Seems 3.2 is the best I can manage at the moment. Will pursue it more later.

Rroff · 1 Jun 2011 at 20:25

P35 aren't the best boards for clocking 65nm Quads - but you should really still hit 3gig with stock voltage or very slightly above stock if its got a really low VID (shouldn't need more than 1.3625 tops - tho might need to put it up a bit on a P35 board to counter droop*) - however the Northbridge/FSB will definitely need an extra couple of notches voltage wise (think thats +0.2) and you will have issues with either all 4 DRAM slots filled or more than 4GB of RAM.

* The voltages seem to go in bands so you may need to go up like 4 notches (+0.0125 per notch?) to get to the next "band" to get it stable.

z0mbi3 · 2 Jun 2011 at 07:02

With voltage drop I need 1.552v on the core to get it to stable at 3.2. I haven't been able to stress test it long enough to say that's 100% stable, but it doesn't fail prime in 10 minutes where as anything lower does.

Avathar77 · 2 Jun 2011 at 07:50

I had the same setup running at 3.2 (8x400) with stock vollts(1.325v) and every thing else stock apart from ram (which is 2.1v ocz ram) My q6600 is a 1.325v vid chip.

Rroff · 2 Jun 2011 at 17:48

Had 3.6gig stable on my Gigabyte P35 DS3R with that kinda voltage ~1.55 and mine was a later G0 with horrid VID 1.3625 or something.

EDIT: Wow just noticed Intel has extended the VID range to 1.5V for those 65nm chips... they really are tough little things - had my E6600 at 3.825 w/ 1.65 vcore under water for 2 years and its still going strong at 3gig w/ stock voltage ~5 years on.

z0mbi3 · 3 Jun 2011 at 09:55

Well I'm putting 1.6 volts through it now (that's not allowing for voltage drop) and it's holding 3.2 stable. I'll mess about some more tonight but I have a feeling that I got a crap chip

WingZero30 · 3 Jun 2011 at 10:58

z0mbi3 said:
Well I'm putting 1.6 volts through it now (that's not allowing for voltage drop) and it's holding 3.2 stable. I'll mess about some more tonight but I have a feeling that I got a crap chip

The motherboard should have 'Load Line Calibration' option.

You need to enable it to reduce vdrop/vdroop significantly. This means you won't be needing 1.6v in bios.

Have you flashed to latest bios?

Avathar77 · 3 Jun 2011 at 15:17

I dont think there is LLC in P35C DS3R!

Rroff · 3 Jun 2011 at 15:20

There is no LLC on the P35 boards, I wouldn't really want to run 1.6v vcore for 24x7 use without somewhat better than air cooling either (even tho these CPUs seem bullet proof) - you really shouldn't be needing anything close to 1.6v for 3.2gig which leads me to believe that the instability is potentially elsewhere (you should be able to get 3.15GHz +/- 0.05GHz stable on stock voltage on that board even with a poor clocker.