less VCORE for more stability??

[therudyq3]

My system:
SL6RZ Malay L 2.4B
Abit IS7, BIOS 15
Buffalo BH6 PC3700 CL3 1 stick 512 MB
Radeon 8500

Ruuning at 197 fsb 1:1, vcore 1.6 (actual 1.58), all GAT enabled at Street Racer, mem @ 2 2 2 5

I can run prime at this setting for 47 minutes then prime would simply stop with an error. so I thought I increase the vcore to 1.625 vcore....
well, it lasted for 7 minutes first time and 9 minutes the second time...aarrggg

just for fun...I lowered my vcore to 1.575...that's below the level that gave me 47 minutes of prime95...
Well to my surprise, it's been running for over 2 hours now...knock on woods...

Has anyone experience this? this is weird...

[modenaf1]

I have the same thing. I dont know about Intel cpu's but my AMD 1700 310 XPMW DLT3C JIuhb does the best on 1.725Vcore. It hates voltage so 1.75 or 1.78 it gets more unstable.

I dont know about your chip, but with AMD's they say the ones that dont like high voltage are the ones that do really well on lower voltages.

[climbski]

Only reason for that would be your cpu temp gets too high with more voltage. I run mine a 2.1V no problem with excellent cooling. If you temp is hitting over 55C it will probably get unstable.

[therudyq3]

no, i don't think temp is a problem...i'm on water..

[Ununquadium114]

ive found that too, that is me in the topic

http://www.xtremesystems.org/forums/showthread.php?s=&threadid=16499

[therudyq3]

wow 3.6 for a 2.4C ...that's pretty good...which Malay stepping is it? L or Q ??

[drunksquirrels]

higher voltages = more heat = less stability

voltages only work if

higher voltage not = more heat

then more stability

[Chowdy]

Originally posted by drunksquirrels
higher voltages = more heat = less stability

voltages only work if

higher voltage not = more heat

then more stability

We've established that it is probably not a heat issue, as he is on watercooling.

[therudyq3]

Originally posted by Chowdy


We've established that it is probably not a heat issue, as he is on watercooling.

his name is DRUNKsquirrels...enough said..LOL

[modenaf1]

so what do yall think of my theory? no? yes? possible?

[MetalStorm]

I know what you mean, I had my CPU at 1.75 v and it would run prime for 6 hours before errors, then to try and stop the errors, I went to 1.85 v it got an error in about 3 seconds... : /

[climbski]

The higher the OC the lower the stable temp. general rule of OCing. Dosn't matter if your at -40C there comes a point at which more voltage becomes less stable due to heat.

[Gautam]

I think that everyone is missing the true cause of this; the power supply. Voltage increase power draw in a square factor. I may be wrong about it being what causing your problems at 1.625v, though. What power supply do you have?

[therudyq3]

Originally posted by climbski
The higher the OC the lower the stable temp. general rule of OCing. Dosn't matter if your at -40C there comes a point at which more voltage becomes less stable due to heat.


It's NOT HEAT!!!!........I'm on water cooler...max temp is like 42C on an ABIT mb which records high temp anyway...

And it's probably not high vcore...because it was at 1.6..actual is 1.58...

please read carefully this post

[CrashOveride]

Watercooling does not always mean that heat is not a problem.

I would have to agree with climbski, otherwise people who do LN2 OCes would have an, essentially, unlimited OC becuase the temp would almost never get above 0* C. That, however, is not the case, not always because the motherboard will not go any higher but because the processor maxes out. You can modify a motherboard to provide more than more than enough power to fry a chip at any temp (ok well I don't know this for sure but I do know that you can supply enough voltage to kill a chip on water and most cooling systems).

Isn't 42 a pretty high temp for a P4 nee ways?

EDIT: sorry, not if the ABIT board is reporting high.

[climbski]

Originally posted by Gautam
I think that everyone is missing the true cause of this; the power supply. Voltage increase power draw in a square factor. I may be wrong about it being what causing your problems at 1.625v, though. What power supply do you have?

This is a very valid possibility what PSU are yoiu using??

[therudyq3]

PSU is Fortron 530W.......... vcore is at 1.6 I then lower the setting to 1.575.. in actual vcore reportit went from 1.58 to 1.55 reported by both MBM5 and Abit's Hardware monitor...

I think we're running around a circle here. Thois anomaly is just weird to me. again, I don't think it's heat or voltage

[MetalStorm]

Get the v 17 bios, it worked wonders for me, stable at 220 MHz fsb - it used to only be stable at 180, it went down hill for some reason from 200 down to 180, but it doesnt really matter now as im at 220

Give it a go

[Gautam]

Originally posted by modenaf1
I have the same thing. I dont know about Intel cpu's but my AMD 1700 310 XPMW DLT3C JIuhb does the best on 1.725Vcore. It hates voltage so 1.75 or 1.78 it gets more unstable.

I dont know about your chip, but with AMD's they say the ones that dont like high voltage are the ones that do really well on lower voltages.

Maybe this is the issue?

Originally posted by MetalStorm
Get the v 17 bios, it worked wonders for me, stable at 220 MHz fsb - it used to only be stable at 180, it went down hill for some reason from 200 down to 180, but it doesnt really matter now as im at 220

Give it a go
He's got an IS7, not an NF7

[MetalStorm]

Opps, sorry, maybe I should learn to read in future... Either way though, it might be an idea to upgrade to the latest bios?

[therudyq3]

I have the latest BIOS...just released last week...BIOS 15...

so it makes it even more puzzling.

I can't seem to be able to run it higher than 195 fsb stable. Itll only last about 2 1/2 hour prime95.

I can run it at 198 fsb but not stable...it actually does better if I drop the vcore from 1.6 to 1.575 then it'll do prime95 longer.

Maybe I set lower mem timing...I rather not. Mem timing is very aggressive right now 2 2 2 5, but it's hardly running at its rated speed PC3700.... 195 fsb X 2 = DDR390...not yet close to DDR466

So maybe this is just the limit of my cpu...at a very low vcore. This is similar to other people's situation here as well.

Overall, I can't really complain. I'm pushing a 2.4B to run at 3.52 stable at a very low/cool vcore. 1.575 vcore and max load temp at 41C to 43C

[schismspeak]

Ok I I have seen this in the "SL6RZ Rocks" thread, they usually did there 3.2-3.5ghz @ stock voltage or slightly lower, it had nothing to do with power supplies in the there case. The new Chips for somereason like lower voltages, if it is prime stable at a lower voltage who cares it is stable that is that, im certain it is not heat, cause if so, lowering the voltage and keeping the OC the SAME wouldnt work.

[therudyq3]

Originally posted by schismspeak
Ok I I have seen this in the "SL6RZ Rocks" thread, they usually did there 3.2-3.5ghz @ stock voltage or slightly lower, it had nothing to do with power supplies in the there case. The new Chips for somereason like lower voltages, if it is prime stable at a lower voltage who cares it is stable that is that, im certain it is not heat, cause if so, lowering the voltage and keeping the OC the SAME wouldnt work.

RIGHT!! I don't care if it's stable at lower vcore ...actually it would just be a plus..

But it leads me to think that perhaps I can OC more because I'm at sucha low vcore for such a high OC...what an anomaly