So I overclocked my 2500+... (sigh)

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10-31-2003, 02:26 AM
mystifmagic

Quote:

Originally posted by KaoTiK
Saps computer ran with his 5v at 4.33, lol. And my computer is perfectly stable with it as low as 4.75.

But 1 extra MHz on the FSB shouldnt blow everything to hell. It's not like he'd have 4.9v on the 5v and 11.9v on the 12v and then puts 1 more MHz on the FSB and his rails drop to unstable levels.

Sounds like the board to me.

I said:

"You would be surprised at how little it can take to make an overclock unstable."

Words to notice: "it can"

He may have run it at 4.33v, but that doesn't mean the rail meant nothing. With a better rail he could have done more I am sure. Your computer might be "perfectly stable" at 4.75v, but that doesn't mean that 4.75v isn't hurting your overclock. For all you know you might get a better overclock if your 5v rail was at or just over 5v at all times. I am just playing both sides, the devil's advocate for this discussion.
10-31-2003, 03:40 AM
tituswolf

why would pc3200 ram need anything more than default vdimm settings to run at its rated speeds... my mushkin level 2 is rated to run at 2.6v at ddr400 speeds, why would i need anything more?
10-31-2003, 04:30 AM
lonewolfroger

Quote:

Originally posted by tituswolf
why would pc3200 ram need anything more than default vdimm settings to run at its rated speeds... my mushkin level 2 is rated to run at 2.6v at ddr400 speeds, why would i need anything more?

Your right, it should not need more vdimm, but IMO, these Nforce 2 MB`s are weird when it comes to memory.
10-31-2003, 04:51 AM
KaoTiK

Quote:

Originally posted by mystifmagic
I said:

"You would be surprised at how little it can take to make an overclock unstable."

Words to notice: "it can"

He may have run it at 4.33v, but that doesn't mean the rail meant nothing. With a better rail he could have done more I am sure. Your computer might be "perfectly stable" at 4.75v, but that doesn't mean that 4.75v isn't hurting your overclock. For all you know you might get a better overclock if your 5v rail was at or just over 5v at all times. I am just playing both sides, the devil's advocate for this discussion.

Still, 1 extra MHz on the FSB wouldn't drop the Rails from being fine to completely unstable... It just doesn't make sense.

And it would make perfect sense for it to be the board, 1MHz on the FSB can easily uncover a boards limit.
10-31-2003, 10:29 AM
hwmicre

Quote:

Originally posted by thebove
12v rail is awfully low, 5v is kinda low too. what kind of a power supply is it?

Geez, the sig says True430....could the readings be off and not the actual rail levels???
10-31-2003, 10:33 AM
speedyaxon

Quote:

Originally posted by lonewolfroger
Your right, it should not need more vdimm, but IMO, these Nforce 2 MB`s are weird when it comes to memory.

i dont think truer words have ever been said.:(
10-31-2003, 01:58 PM
tituswolf

could the board be the cause for the low rails?
10-31-2003, 05:07 PM
mystifmagic

Quote:

Originally posted by KaoTiK
Still, 1 extra MHz on the FSB wouldn't drop the Rails from being fine to completely unstable... It just doesn't make sense.

And it would make perfect sense for it to be the board, 1MHz on the FSB can easily uncover a boards limit.

Way back when I was first overclocking the 1600+ up to the 1.9Ghz+ range my PSU reported 5v and 4.95v constantly all the way up to 180Mhz FSB. At 181Mhz FSB my 5v rail dropped to 4.7v; luckily I have an Antec PP412x PSU and I can adjust my rails. I have had lots of experience when it comes to overclocking, and yes 1Mhz can drop rails. I am not saying that is exactly what is happening here, but it could be.

Quote:

Originally posted by tituswolf
could the board be the cause for the low rails?

They aren't super low, but they are lower than I would want mine to be. Your currently rail status is caused by all your components and the overclocking of your chip. Since the 5v rail is where AMD chips get their power and Intel chips get their power from the 12v rail IIRC.
10-31-2003, 05:10 PM
speedyaxon

Quote:

Originally posted by mystifmagic
Since the 5v rail is where AMD chips get their power and Intel chips get their power from the 12v rail IIRC.

i thought amd got their's from the 12v too? Cuz when i really start upping the vcore/speed, my 12v drops a bit...while the others are virtually untouched. I think that's also why some manufacturers are including support for the square 12v plug to help power the board/cpu in addition to the standard 20pin connector. I hear that helps overclock stability. Of course, i could be wrong, it's happened before...:p
10-31-2003, 05:11 PM
mystifmagic

Quote:

Originally posted by speedyaxon
i thought amd got their's from the 12v too? Cuz when i really start upping the vcore/speed, my 12v drops a bit...while the others are virtually untouched. I think that's also why some manufacturers are including support for the square 12v plug to help power the board/cpu in addition to the standard 20pin connector. I hear that helps overclock stability. Of course, i could be wrong, it's happened before...:p

My knowledge on that could be a bit rusty, I will have to double check myself.
10-31-2003, 05:15 PM
xDUCK

AMD's get their primary power from the 5v rail. If they need a little bit of extra power, they go to the 12v (which is why your 12v rail dips when you give your CPU that extra voltage).
10-31-2003, 05:17 PM
speedyaxon

Quote:

Originally posted by xDUCK
AMD's get their primary power from the 5v rail. If they need a little bit of extra power, they go to the 12v (which is why your 12v rail dips when you give your CPU that extra voltage).

okay, thanks for clarifying my misinformation, xduck!:p
10-31-2003, 05:19 PM
KaoTiK

Quote:

Originally posted by xDUCK
AMD's get their primary power from the 5v rail. If they need a little bit of extra power, they go to the 12v (which is why your 12v rail dips when you give your CPU that extra voltage).

Hmmm, didn't know that one. Thanks duck. :)
10-31-2003, 05:21 PM
mystifmagic

Quote:

Originally posted by xDUCK
AMD's get their primary power from the 5v rail. If they need a little bit of extra power, they go to the 12v (which is why your 12v rail dips when you give your CPU that extra voltage).

I guess I haven't gone CPU brain-dead over these past months after-all.
10-31-2003, 05:29 PM
KaoTiK

So at 180 your 5v was 4.95 and at 181 your 5v dropped to 4.7. Wow... that's the first I've ever heard of a drop that drastic.
10-31-2003, 05:31 PM
mystifmagic

Quote:

Originally posted by KaoTiK
So at 180 your 5v was 4.95 and at 181 your 5v dropped to 4.7. Wow... that's the first I've ever heard of a drop that drastic.

Other people have had drops as well, either larger or smaller; it's not impossible.
10-31-2003, 05:33 PM
KaoTiK

Quote:

Originally posted by mystifmagic
Other people have had drops as well, either larger or smaller; it's not impossible.

Well I know that it drops your 5v when you overclock, I'm not stupid, lol. But I mean, 1MHz drops .25v on the 5v rail.

Can anyone else confirm something like this happening to them? Maybe you just had a dying PSU that couldnt take the extra bit of power or something?
10-31-2003, 05:36 PM
mystifmagic

Quote:

Originally posted by KaoTiK
Well I know that it drops your 5v when you overclock, I'm not stupid, lol. But I mean, 1MHz drops .25v on the 5v rail.

Can anyone else confirm something like this happening to them? Maybe you just had a dying PSU that couldnt take the extra bit of power or something?

I have the same PSU that I did then, and it's running better than ever. My point is this; It can happen, it has happened, it might be his problem. I am just throwing every possiblity out onto the table.
11-03-2003, 12:25 AM
tituswolf

hey guys, i was finally am home and able to give you accurate voltages:

+3.3 = 3.26
+5 = 4.87
+12 = 11.42
-12 = -11.93
-5 = -5.01

which is most important + or - ?
11-03-2003, 12:29 AM
lonewolfroger

Quote:

Originally posted by tituswolf
hey guys, i was finally am home and able to give you accurate voltages:

+3.3 = 3.26
+5 = 4.87
+12 = 11.42
-12 = -11.93
-5 = -5.01

which is most important + or - ?

The + is the most important and your +12v line is IMO way too low.
11-03-2003, 12:29 AM
speedyaxon

your 12v rail is a bit low there....and + is important, - isn't used, so don't worry about it.
11-03-2003, 12:50 AM
tituswolf

Quote:

Originally posted by speedyaxon
your 12v rail is a bit low there....and + is important, - isn't used, so don't worry about it.

my reading came from motherboard monitor, but i decided to see what the bios was reporting according the the bios i am getting +12 = 12.03, which one do you think i should believe?
11-03-2003, 12:52 AM
speedyaxon

in this case, i would believe the bios...
11-03-2003, 01:09 AM
DAoC

Just read this thread, looking mostly at the motherboard comments, could the reason I can't go much more than 150fsb be due to the mobo? I'm running a nearly 2 year old asus a7n8x 1.0 so being that old it might actually be my problem when trying to overclock?
11-03-2003, 01:12 AM
lonewolfroger

Quote:

Originally posted by DAoC
Just read this thread, looking mostly at the motherboard comments, could the reason I can't go much more than 150fsb be due to the mobo? I'm running a nearly 2 year old asus a7n8x 1.0 so being that old it might actually be my problem when trying to overclock?

Is that 2100+ you have a palomino.

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