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vcore voltage

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March 25, 2004 6:08:31 PM

I have a 2600+ @ stock on a MSI K7N2 Delta-L. I've seen my vcore drop as low as 1.62, I have it set for 1.65 in bios. Is there any way I can get this to be more stable?

01001001 00100000 01001100 01001111 01010110 01000101 00100000 01110011 01110000 01100101 01100001 01110010 01101101 01101001 01101110 01110100 00100001<P ID="edit"><FONT SIZE=-1><EM>Edited by Ris3n_Da3mon on 03/25/04 03:10 PM.</EM></FONT></P>

More about : vcore voltage

March 25, 2004 7:00:35 PM

does the vcore stay pretty much stable at 1.63v? if so its not common for boards to over or under volt, as long as the vcore is stable then you should be ok. Increasing the vcore by .025v in the bios should bring you to about 1.65v.

If your Vcore voltage is fluctuating it could be a whole other story, but i wont get into that without being sure the vcore is indead wavering around.

What psu are you using?

Are the voltages stable? Is the 12v abnormally low?

If it isn't a P6 then it isn't a processor
110% BX fanboy
March 25, 2004 7:46:56 PM

how about mine? mine isi the reverse, it stays pretty constant at 1.7V, and i have no way to decrease it..why is that? is it bad for my cpu?
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March 25, 2004 7:54:26 PM

sounds like an asus motherboard...

The only solution i can think of is doing a vid mod to decrease the vcore...this would require modifications to the pins, im not sure if there is a bridge mod to acomplish this.

I think that should be well within AMDs voltage regulator overshoot specs...and even if it wasnt, i dont see any problem running the cpu at 1.7v. Your motherboard manufacturer (which I assume is asus because asus is known to do this) has decided that the motherboard will seem more stable by overvolting the cpu by a small amount.

If it isn't a P6 then it isn't a processor
110% BX fanboy
March 25, 2004 10:39:47 PM

yeah it fluctuates, there have been a few times I've seen it at 1.66, but also as low as 1.62. I have an antec smartblue 350watt psu, and all my rails are within 5%.

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March 26, 2004 1:10:10 AM

Your numbers are within spec. If the chip is running cool enough raise the vcore to 1.675, to keep you away from the bottom end.
Just because the posh that passes for a voltmeter on your board says a thing, does not make it so. There are a number of things that affect the readings. Dont sweat it.
March 26, 2004 12:36:05 PM

If you increase the Vcore, be sure that the CPU can take any voltage bellow 1.8V.
NEVER REACH 1.8V!!!!1.775 is still OK.
March 26, 2004 1:38:52 PM

There's nothing inherently wrong with 1.8V. it's at the high-end for Air cooling, but with a decent cooler it's not instant death or anything.

Granted if you're running at stock speeds on a t-bred or barton core Athlon XP then you don't need 1.7V, let alone 1.8, but for overclocking higher voltage can help.

---
Epox 8RDA+ rev1.1 w/ Custom NB HS
XP1700+ @205x11 (~2.26Ghz), 1.575Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro 420/744
March 26, 2004 2:57:12 PM

Maybe worthwhile to d/l Motherboard Monitor 5 (MBM5) to cross check the vcore in case your mobo is not accuratley reflecting the true vcore.

Can d/l it here <A HREF="http://mbm.livewiredev.com/" target="_new">http://mbm.livewiredev.com/&lt;/A>

Barton 2500+
Abit NF7-S v 2.0
Maxtor 60GB ATA 133 7200RPM
512MB Corsair Twinx 3200LL
9600 Pro
Enermax Noisetaker 420 watts
Win98SE
March 26, 2004 3:53:08 PM

I can concur with that. ASUS boards dont have stable vcores and are never where you WANT it

Mobile Barton 2500+ @ 2420mhz 11x220 1.7v
Asus A7N8X Dlx 440 FSB
1gb Geil GD pc3500 Dual Channel (2-3-3-6)
Segata 80gb SATA 8.5ms seek
ATI Radeon 9800 Pro(420/720)
March 26, 2004 4:29:19 PM

Quote:
There's nothing inherently wrong with 1.8V. it's at the high-end for Air cooling, but with a decent cooler it's not instant death or anything.

Good thing I have water cooling :D 

And MBM5 is what's telling me my vcore is fluctuating.

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March 27, 2004 3:49:50 AM

too bad it's not an Asus' mobo..
it's a Gigabyte GA-7N400L
I leave everything at default setting, and it stays always at 1.70V (sometimes 1.71, 1.69..)
Quote:
I think that should be well within AMDs voltage regulator overshoot specs

That's what I thought too..and since i have no stability issue, I just leave it like that, i've just been wondering if it would be bad for my processor
Same thing happens to my RAM, which is supposed to be 2.5V, but it always stays at about 2.6V
also, I've heard those bad capacitors problems..i've never experienced it..but i dun think it's mine?
March 27, 2004 5:48:37 AM

i got my AMD Athlon(tm)xp 1700+ @ x12, fsb 133, core v. 1.825 = 1900+ @ 1.6mhz. Seems fine with stock sink and fan that came with it, temp is at 49-50 C. wonder if the 1.825 is over kill then and should i get better cooling, let me know.
March 27, 2004 3:47:08 PM

actually i think jdec specs pc3200 ram to run 2.6v while pc2700-pc1600 run 2.5v.

If it isn't a P6 then it isn't a processor
110% BX fanboy
March 27, 2004 3:55:36 PM

your fluctuations are not anything crazy, they are within the +/- 10% that most manufacturers spec for, and are well within amd's overshoot/undershoot specs. Although you are using a smart power psu, which although will get the job done admirably is not necissarly known to be the most solid powersupply which could be the cause of the fluctuations. But in the end it is just a shortcomming of your boards VRM.

So basically in the end dont sweat it, if you are freaking out and feel you MUST stop the voltage fluctuation then i would look at a new powersupply...something along the lines of a fortron 350 or 400 watter, but even this is not guaranteed to solve your problem.

If it isn't a P6 then it isn't a processor
110% BX fanboy
March 27, 2004 5:16:12 PM

my RAM is Crucial with Micron chip, PC2700...it runs at 2.5V with my previous motherboard, now runs at 2.6V with this nForce2 mobo
but then again, since i have no system instability..I just leave it :smile:
March 27, 2004 5:19:02 PM

do you have sth called "cpu halt command detection" in ur bios? i had that with my previous motherboard, when it's enabled, the voltage will be fluctuating
that command makes cpu runs cooler by about 4~5C (In my case)
March 28, 2004 12:45:03 AM

thanks for all the info :D 

I was just wondering if it was something I should look into fixing.

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March 28, 2004 1:19:47 AM

ya a few mobos overvolt ram by default to increase stablity...especialy nforce 2 and 865/75 chipsets...cause they push memory pretty hard.

If it isn't a P6 then it isn't a processor
110% BX fanboy
March 28, 2004 5:33:01 AM

just a quick question...
how long have you been using ur BX board?
!