Q6600 not Prime stable @ stock :o(

Waxmyballs · 1 Jan 2008 at 15:13

I have a G0 Q6600 on a P35 DS3P with 2Gb Ballistix 8500. Running Vista 64bit (fully legit i'd add!)

The ram is running at stock with 2.2v as is the CPU @ 1.325v.

Under prime the whole system locks up before completing the first step.

What could be the problem?

Phemo · 1 Jan 2008 at 15:17

What are your temperatures like at idle and just before it locks up?

helmutcheese · 1 Jan 2008 at 15:21

Check your Mobos " AUTO" voltage are correct for the CPU, some can be over or under.

Then check Temps.

Waxmyballs · 1 Jan 2008 at 15:32

Temps at idle are around 35 using core temp. Using games and 3dmark etc temps head up to about 55. With Prime95 the temps barely move to 40 before it locks. According to the CPU load gadget it does indicate that it is taking on the iterations before it locks.

Cob · 1 Jan 2008 at 15:38

What does the vcore drop to under load?

Waxmyballs · 1 Jan 2008 at 15:48

How would i check that? Thanks

Cob · 1 Jan 2008 at 15:49

The latest CPU-Z will give you the current vcore reading.

Waxmyballs · 1 Jan 2008 at 16:05

ok, while running 3d Mark it dropped to 1.312 at its lowest point.

Cob · 1 Jan 2008 at 16:06

That should still be fine.

What about Prime95 load?

Waxmyballs · 1 Jan 2008 at 16:12

It only dropped to 1.318 before it locked.

Cob · 1 Jan 2008 at 16:13

Try manually setting it to 1.35v.

Also would be worth MemTesting the RAM.

Troop · 1 Jan 2008 at 16:15

Thought the stock V core for the GO Q6600 was something like 1.235V

Try Mem 1-1

mem at 1.9v (+.1v)

north bridge at 1.9v (+.1v)

V core at 1.3v

clock at 8X 400 =3200

mem @ 4-4-4-12

Just try the above settings and see how they go, have set up 3 DS3R's on those setting, with Go Q6600's and they all worked prime stable, with Balistix 5300 1gb x 4

Cob · 1 Jan 2008 at 16:21

Q6600 VID ranges from 1.2v-1.325v.

helmutcheese · 1 Jan 2008 at 16:24

Hense I wanted him to find out his CPU's Rated Volts and see if his Mobo Auto voltage was correct.

Waxmyballs · 1 Jan 2008 at 16:35

Troop said:
Thought the stock V core for the GO Q6600 was something like 1.235V

Try Mem 1-1

mem at 1.9v (+.1v)

north bridge at 1.9v (+.1v)

V core at 1.3v

clock at 8X 400 =3200

mem @ 4-4-4-12

Just try the above settings and see how they go, have set up 3 DS3R's on those setting, with Go Q6600's and they all worked prime stable, with Balistix 5300 1gb x 4

The stock v-core (according to CPU-Z) is 1.325 for my chip.

My Ram's stock voltage requirements are 2.2v and timings are 5-5-5-15 according to Crucial.

I've given the northbridge an additional 0.1v already.

Isn't the point that this chip should run at stcok without issue? Let alone 3.2GHz?

This is a new CPU from OCUK btw.

Jokester · 1 Jan 2008 at 16:38

Small or large FFTs when you run Prime?

Waxmyballs · 1 Jan 2008 at 16:41

I used blend. Should i try the others?

Cob · 1 Jan 2008 at 16:43

Yeah Small FFT's should help to rule out the memory.

Jokester · 1 Jan 2008 at 16:43

Waxmyballs said:
I used blend. Should i try the others?

Blend starts with large FFT which stresses your RAM/NB as well as your CPU.

Try small.

Waxmyballs · 1 Jan 2008 at 16:49

Well this looks promising (well kind of! LOL).

I'm writing this whilst it is performing the small test. Are you thinking my RAM is more likely to be to blame?