e6300 -> q6600 OC Stability

[melipone1]

Been running my e6300 for the last few years at 456 x 7 (3200 mhz) at 1:1 dram ratio. 2.05v on ram. Have a P5B-Deluxe with latest bios. 700 wat psu

Now with my Q6600 G0 I can't seem to push the FSB past around 375 without having major instability and I have to run the ram at lower voltage (~1.9 with slackest timings, cas 6 etc). With higher ram volts I don't think it even boots to windows over 380 fsb. The ram is Geil DDR2, 2gig rated @ 400 mhz, 4,4,4 with 2.1V. With the e6300 I had 456 with cas 5 iirc. It never liked me using its rated voltage

Is it normal to have such a smaller FSB for a q6600? Or could my RAM have degraded? Or just the motherboard not liking quads?

I've tried loads of combinations like 400x8 or 9, 1.55 northbridge voltage (use 1.45 now, don't think it likes 1.55).

Vcore is on auto atm, but I believe I was using 1.3625 (1.3v in cpuz). At auto its 1.36 in cpuz. ~44-50 degrees idle on the cores, up to about 60 degrees 100% load. 1.2250 vid

I get a 1x link width bug over around 380 FSB. Could that be related? Only started getting this after getting the q6600

Any ideas?

 

[area512003]

Strangely, I have a P5QL Pro mobo and recently changed from a Q6600 (B3) that was limited to 3150MHz (FSB350) to a Q9550. With the Q9550 only having a multiplier of 8.5, 350FSB only comes to 2.975GHz so I tried upping the FSB over 375 but I get major instabilities and plenty of BSOD's! I have changed PSU, Memory, updated Video Drivers and messed with so many voltage variations in the BIOS but still no joy!

My next action is to try the CPU in a different mobo. Have you tried that?

 

[mp260767]

you tried knocking the multiplyer down to 6/7.

was your e6300 a later version model ?

worth setting the vcore to 1.4 for testing.

 

[Deception]

On my P5Q-PRO I noticed my Q6600 wouldnt go over 400FSB. I guess you could try it with different RAM in (Thats if you can get your hands on any). Also, you could try and see if there are any BIOS updates available to take advantage of quads (Worth a shot!).

 

[melipone1]

Thanks for the comments

My next action is to try the CPU in a different mobo. Have you tried that?

Don't have one I can try it in, and I'm not sure it's worth putting much more money into this rig tbh.

you tried knocking the multiplyer down to 6/7.

was your e6300 a later version model ?

worth setting the vcore to 1.4 for testing.

Not tried below 8, will give it a try.

Think I got my e6300 not long after they came out

I think the bios is setting around 1.4 auto, but dips down to 1.36 in cpuz, maybe lower under load. Could try it higher

On my P5Q-PRO I noticed my Q6600 wouldnt go over 400FSB. I guess you could try it with different RAM in (Thats if you can get your hands on any). Also, you could try and see if there are any BIOS updates available to take advantage of quads (Worth a shot!).

I could probably buy 2x2gigs (only got 2x1 atm). Just debating whether its worth it. Have got the latest bios, unless theres a custom beta somewhere. Got version 1238

I was wondering if it's likely the northbridge getting unstable with the quad. Any things I could do to lessen the load on it? Maybe not run the ram in dual channel? Or could it just be the chip?

 

[mp260767]

try setting the vcore to 1.4 manually.

thing is with the q6600 there's not really a requirement to go much over 400fsb (ie 400x9 =3.6gz), most the good clockers have got a little over that from what i've seen.

if you set the multiplyer to 9 what's the highest fsb you can get it too, 333x9 will give you 3ghz, which should be possible on the g0.

do the voltage lines (12v, 5, 3.3) look ok in the bios.

 

[Tekgun]

When I bought my P5Q Deluxe I had to adjust the "AI transaction Booster" in bios to get my ram to play nicely @ 1:1

In the BIOS;
AI Overclock Tuner to Manual
DRAM frequency = Set to what you need for 1:1
AI Transaction Booster = Manual
Performance Level = 10