What is limiting my overclock?

Tesla · 22 Jan 2008 at 13:29

Hi guys,

I need to work out what the problem with my overclocking is.

My spec is:

Abit IP35
Intel E2140
2gb Geil ULL DDR2 (2x1gb)

I know the CPU is good to 3.2ghz as I bought it off of my friend and fellow forum member Paradigm.

However, I have orthos crashing on blend test at 3.0ghz (900mhz DDR).

Currently, the CPU is at 2666mhz and the memory sits at 800mhz like this.

I have read around and almost everybody runs this Geil at 900mhz, I even upped the mem voltage and slackened the timings when at 3000/900 but it still crashed out so perhaps it's the chipset?

Any adivce much appreciated.

TIA,

Chris

Tesla · 22 Jan 2008 at 13:51

Yea the CPU needed a little voltage boost for 3.2 but would do 3.0 on 1.325v.

The memory is 6400.

If I can have it orthos stable at 3.0ghz and 900mhz DDR I will be well chuffed

Tesla · 22 Jan 2008 at 21:21

On the IP35 which setting relates to the NB voltage?

Will the overall system perform better with 3000mhz cpu and 750mhz memory or 2666mhz cpu and 800mhz memory?

Tesla · 29 Jan 2008 at 09:05

Right, managed to get the CPU 8-hours Orthos stable at 3ghz.

Last night I knocked the memory upto 900mhz with 2.1v and the defualt (tight) timings.

Orthos failed after 6hours 40mins on the blend test.

What's the next step?

Tesla · 29 Jan 2008 at 17:52

I slacked off the timings to 5-5-5-15 and it is still failing.

Any ideas?

Tesla · 29 Jan 2008 at 18:38

Kirth Gersen said:
Not sure about the IP35, but on Gigabyte boards its McH.

I guess your next step are the voltages. 1.325v for vcore is stock isn't it? What's your cooler? Tweak it in steps all the way up to 1.5v if you've got a decent one. Also suggest upping the FSB voltage a couple of notches.

The CPU is stable at 3.0ghz with the mem underclocked but as soon as i overclock the mem it's failing. Will upping the vcore actualy help?

I am thinking either the mem is just not that great or the chipset needs more oomph.

Tesla · 29 Jan 2008 at 23:13

Thanks guys, the reason for increasing the voltage to 1.365 was due to drop under load, my friend had it at stock on his mobo which is an IP35pro.

I am on the stock intel cooler so temps under Orthos load are hitting 80degrees now.

I am considering buying one of these fancy thermalright 120mm coolers and aiming for 3.2Ghz as then the memory can run at 800 as pointed out above. Or, purchase faster memory and flog this Geil ULL stuff.

I have heard that certain IP35 bios' have more memory divider options? If so is there a Bios that will allow me to run at 3ghz and nearer 800mhz on the memory?

Tesla · 30 Jan 2008 at 13:13

If 80degrees was unsafe Intel would make the cpu throttle below that and not 100.

That's my theory anyway

Tesla · 1 Feb 2008 at 07:46

Hi guys.

I updated core temp and it's now reporting my Orthos load temps at 72deg.

Any other stress tests such as superPi or 3dmark benchmarks never see temps. this high anyway, not sure what Orthos does but it really heats the CPU up!

I upped the DDR voltage to 2.2v and so far have done 8hours 30mins of Orthos blend test. I think I shall leave it running for 24hours just to be double-sure but looks as if I have managed to get 3.0ghz and 900mhz stable!

The timings I slacked off to 5-5-5-15 so after I have 24hour tested this I think I will tighten them back to 4-4-4-12 and try again.

I think I may still upgrade the cooler as I assume a 120mm model will be quieter and perform better? Any suggestions?

Tesla · 1 Feb 2008 at 18:43

That is a fair point Pneumonic.

I do not mind removing the motherboard to fit the cooler.

I will measure my case (Lian-Li PC60) and report back.

I am going to search the forums but have many people here made there own fan controllers? I am thinking it could be an interesting little project and I could use a Lian-Li blanking plate to house it.

Tesla · 1 Feb 2008 at 22:40

Would orthos fail on a 100% stable system?

What if that system was running other software at the same time?

2:FATAL ERROR: Final result was 668A3C43, expected: E3C6EDBC.
2:Hardware failure detected, consult stress.txt file.
2:Torture Test ran 23 hours, 7 minutes 28 seconds - 1 errors, 0 warnings.
2:Execution halted.

1:Torture Test ran 23 hours, 7 minutes 28 seconds - 0 errors, 0 warnings.
1:Execution halted.

EDIT- Just checked BIOS and I have actually been running the memory at 4-4-4-12!

EDIT(2) - Perhaps the cooling situation isn't helping so I may upgrade that before anything?

EDIT(3) - The big 120mm coolers just won't fit.

Tesla · 3 Feb 2008 at 09:48

Pretty sure the CPU is 100% stable at 3000mhz as just did a 34hour Orthos test with no errors.

I have just upped the MCH voltage a tiny bit and will try the blend test again.