x2 3800 undervoltage

[ruijorge]

Hi,

If i run my cpu at 1.26/1.28V instead of default 1.30V and it runs just fine, do you think that this can damage it?
Thanks.

 

[m1ldslide1]

I'm no EE, but I think not? Besides, stock voltage on my a64 is 1.4v. I'm surprised that an X2 is "stock" at 1.3. In other words, I'm skeptical.

But if you pass several hours of prime95, then more power (less power) to you.

 

[ruijorge]

I have Manchester core so the default is 1.3V. I think that Toledo´s default is 1.35V...
But anyway should i run it at lower voltage if possible?

 

[Duvie]

http://www.amdcompare.com/us-en/desktop/details.aspx?opn=ADA3800DAA5CD

http://www.amdcompare.com/us-en/desktop/details.aspx?opn=ADV4400DAA6CD

actually according to AMD the Toledos are also 1.3-1.35v....luck of the draw I guess...

I know opteron 2xx models can come in both 1.3-1.35v and they are all Toledo like cores...

 

[DAPUNISHER]

Originally posted by: ruijorge
But anyway should i run it at lower voltage if possible?

Absolutely.

 

[ruijorge]

But what about running it at 1.26/1.28V.
Would it be better?

 

[AkumaX]

Originally posted by: ruijorge
But what about running it at 1.26/1.28V.
Would it be better?

if you can do it, then go for it

just test to see if the system's stable

my o/c on my paltry x2 3800 is only 2.4ghz, but it runs anywhere between 1.32v-1.36v, 2 x prime stable

 

[DAPUNISHER]

If it is completely stable, go for it. Less power, less heat, whats not to like? 🙂

 

[Duvie]

I tested my 4400+ at 1.28v and it ran prime95 for 24hours....Neo2 boards are famous for major undervolting by the board.....

I saw a guy recently drop his X2 to run at like 1.8ghz and 1.2v and it ran fine....just means cooler running chip consuming less power...

 

[Bullhonkie]

Should be no problem at all to run undervolted as long as it's stable. If anything you might actually prolong the life of the CPU somewhat AFAIK.

That's what AMD's Cool and Quiet does anyway - drops your multiplier and voltage. I run slightly undervolted at my target speed (1.3v 2.6ghz) on an Opty 165 and I use RMclock to kick it down to 1.1v at 1.445ghz when idle. Lowers my idle CPU and PWM temps by 3-4C.

 

[ruijorge]

Thanks guys, this is all I needed to know 😉.

 

[aigomorla]

Originally posted by: Duvie
I tested my 4400+ at 1.28v and it ran prime95 for 24hours....Neo2 boards are famous for major undervolting by the board.....

I saw a guy recently drop his X2 to run at like 1.8ghz and 1.2v and it ran fine....just means cooler running chip consuming less power...

ive gotten my x2 at stock mhz to 1.1 but it felt really really slow. :\

 

[F1shF4t]

Originally posted by: aigomorla

Originally posted by: Duvie
I tested my 4400+ at 1.28v and it ran prime95 for 24hours....Neo2 boards are famous for major undervolting by the board.....

I saw a guy recently drop his X2 to run at like 1.8ghz and 1.2v and it ran fine....just means cooler running chip consuming less power...

ive gotten my x2 at stock mhz to 1.1 but it felt really really slow. :\

well i guess thats what that 40% overclock does 😛
Nice overclock.
I wish i could go higher, but i'm limited by the board, set the multy and mem lower and still unstable, maybe this chip could hit 3ghz but not with my board 🙁