Does 4Gb hinder your overclock?

Mr Paul · 26 May 2008 at 22:05

I ask as when I had 2Gb my E2160 would do 3.2Ghz at 1.5v (12+ hours Orthos), now with 4Gb it reboots while Orthosing at same settings after 10 mins.

Currently Priming at 3.0GHz at 1.4v and so far so good, but I'm not holding me breath

Any ideas?

Justintime · 26 May 2008 at 22:10

more/larger modules can do yes. try looser RAM timings and/or more RAM voltage.

Mr Paul · 26 May 2008 at 22:26

Already running at rated 5-5-5-15 2.1v, 2 x 2Gb sticks.

El Jimben · 26 May 2008 at 23:19

Try upping the MCH voltage a notch.

Mr Paul · 27 May 2008 at 08:04

Tried that and the FSB voltage up one notch and the same.

It is stable at 333 x 9 for 3GHz at 1.4v, just passed 18 hours of Orthos small FFT's.

wolvers · 27 May 2008 at 10:31

If it's 4 sticks, you need a little more NB voltage I think for stability.

Minstadave · 27 May 2008 at 11:09

I needed more MCH volts to hit 3.3ghz on my E6320.

Pneumonic · 27 May 2008 at 11:10

yup just up the northbridge I find no difference when clocking on my P5K-E with 2 or 4 sticks

mmj_uk · 27 May 2008 at 12:06

In my experience RAM size doesn't matter but number of sticks does, having 4 sticks versus 2 can limit overclocking.

Mr Paul · 27 May 2008 at 13:45

It's coming from 2 x 1Gb sticks to 2 x 2Gb sticks.

I've tried upping NB and FSB voltage one step and it made no difference.

Minstadave · 27 May 2008 at 14:36

Go up another step, I had to raise mine to +0.1v with 2x2GB.

Mr Paul · 27 May 2008 at 15:56

Ah, just the NB voltage?

Mr Paul · 28 May 2008 at 11:48

Hmm while it passed 18 hours of small FFT, it failed (crashed) after 9 hours blend.

What does this mean?

HeX · 28 May 2008 at 11:56

Blend uses your ram a lot more, so it doesn't seem your memcontroller is stable with 4 sticks running that overclock, more NB volts.

Just crank it up, you can chuck a good 1.7V through the NB without a problem.

Mr Paul · 28 May 2008 at 12:15

Well the memory is only running at stock 1066Mhz and the NB is on the 333 strap.

Really more NB volts? What about the FSB volts etc...

Mr Paul · 28 May 2008 at 22:27

Well trying 1.55v through the nb, is this ok? Are there any other settings I should change?

JoeDredd · 29 May 2008 at 08:27

Mr Paul said:
Already running at rated 5-5-5-15 2.1v, 2 x 2Gb sticks.

wolvers69 said:
If it's 4 sticks, you need a little more NB voltage I think for stability.

DOH !!!!!!!!!!

HeX · 29 May 2008 at 08:45

Mr Paul said:
Well trying 1.55v through the nb, is this ok? Are there any other settings I should change?

That voltage is fine m8.

If you are worried just bung a small fan over the NB. But seriously you won't harm anything with that.

Supprising that you need to crank it up with only 2 x 2GB, if it were 4 x 1GB then yeah, but 2 x 2GB usually doesn't require any more than 2 x 1GB.

But meh, PC's are a fickle thing.

Mr Paul · 29 May 2008 at 11:50

HeX said:
That voltage is fine m8.

If you are worried just bung a small fan over the NB. But seriously you won't harm anything with that.

Supprising that you need to crank it up with only 2 x 2GB, if it were 4 x 1GB then yeah, but 2 x 2GB usually doesn't require any more than 2 x 1GB.

But meh, PC's are a fickle thing.

Well it passed 14 and a half hours Orthos Blend priority 10 at 1.55v NB. So I'd say it's stable

Going to try 1.40v NB as that's the next step down. See what happens.

If thats ok, I'll try upping the CPU clock

Should I change any other voltages etc?

What about Quad clocking (as I'm toying with the idea)

pugheaven · 29 May 2008 at 13:09

I've tried 1x2GB, 2x2GB, 4x2GB in my rig and all overclock the CPU to the same... can't get above 2.42ghz without it throwing a wobbly so in my case, the amount of ram makes no difference whatsoever... that's volted at 2.1v and 2.2v on the ram...

Cheers
Pug