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1.45V Althon Mobile on 1.65V Mobo?

M

mplutodh1

Senior member
I oringally purchased a MOBLE AMD|2600+/266 ATHLON XP from Newegg with the intent of using it with my Gigabyte K7N400 Pro2 Rev2 but later realized the two werent going to work together after spending time on the phone with Gigabyte and spending hours of time working with it. So I purchased a non-mobile and am currently running it on that board. However now I have this CPU sitting around and would hate to just let it collect dust.

I have an Asus A7N266 sitting around with a AMD 1.3 on it from the previous system build, I thought about running the Mobile on that board but don't know if it will work or not. I purchased the mobile with the hope that it would run a bit cooler and from what I read everyone said buy the mobile over a non-mobile. My concern is that the voltage is different though. Any suggestions on a cheap board to run with the mobile? Or ideas on using it with the Asus?

I don't want to spend a ton of $$ because I honestly have no idea what i will do with the box if I do end up building it up, but I'd just hate to have it just sit here.
 
I don't think it would work as Asus doesn't list the A7N266 as having Barton support. If you want to run the mobile at 1.45V, avoid buying an Asus as well. You won't get voltages that low. I know, I have one 😉
 
So from what I gather than, that MB supports the mobile processor if I change the Vcore voltage to 1.45? I think I am going to rebuild my parents computer while I am home for the holidays and that CPU is sitting around, might as well put it to use. (that or I can use it in my linux box)
 
if you use a mobile proc in an asus mobo, it will run at 1.65v in the bios by default (but show up around 1.55-1.6 in probes). It will run just fine at this voltage, however, you might as well take advantage of the extra voltage and overclock it.. bump up the multiplier/fsb a bit. the xp2500 & xp2400 mobiles will do 2.2ghz (11x200) on the minimum voltage settings (1.65) and still run super cool 🙂 These are great, great chips. I have 2 of them running at 2.2ghz and they both run cooler than a real xp3200 by a large margin.

 
so call me ignorant when it comes to OCing cuz I have never done it nor do I really intend to do it. Don't I want the voltage the CPU runs at to match the voltage the MB is providing? The Mobiles run at 1.45 the MBs are 1.65
 
bump, support at Gigabyte said I would burn out the CPU if I ran the Vcore at higher than 1.45... can someone explain to me or provide me with a link to information regarding what the advantages/disadvantages of running the vcore at different voltages are?
 
No, you won't burn out the mobile by running it at 1.65v

The 2600+ mobile is a Barton core, generally rated to run @ 1.65v. However, the mobile chips are hand selected, the best silicon, because they are meant for a laptops. In the lappie, you want less heat and less voltage (battery life). So these are uber Bartons which CAN run with less vcore. Nothing says you can't run them at the regular vcore, it's just that they don't NEED it to run at their rated speed.

The mobile in my sig is running a vcore of 1.55v. The extra vcore (amount over and above 1.45v) allows me to clock the chip faster.

If you could adjust the vcore on your mobo down to 1.45v it would run slower & cooler than using vcore of 1.65v.

If you gotta use 1.65v you might as well OC the cpu to at least 2200mhz (11 x 200). Which is the setting for an XP 3200+.


Fern
 
alright, that makes sense. Thanks!

any ideas on why the mobile wouldnt work on the Gigabyte MB in my sig? It posted at incorrect speeds with changing the FSB to just about anything, never reached the correct speed. I am confused as to why Gigabyte told me it would burn up the CPU...
 
Your gigabyte board might not support different voltages settings. If it doesn't support different multipiers it will be hard to overclock that chip, since I believe they default to 6x on most motherboards. (They will typically come up as "unknown CPU type") As has been said, barton cores tend to run at 1.65v anyway. You won't burn it out running at that voltage, but it will run hotter. And as has been said, if you're going to pump more volts into it (more voltage = more stability (to a point) + more heat + shorter chip life) than you may as well overclock it and reap the benefits.

I'm not familiar with your gigabyte board, but just browsing around google for a minute it *looks* like it has the options you need. It seems the voltage doesn't use exact settings from what one guy said, only allowing you to adjust a percentage of the default voltage. (And the max is 10%?) Looking on gigabyte's website, they say they don't support mobile processors...not that of a big surprise since considering what they said. They ARE for laptops really afterall. 😛

Anyway, if you boot into your bios, see if you can find multiplier settings or CPU ratio or something like that. I believe your current chips setting on that will be 11.5x. If you have that setting, and you can set the FSB frequency in there (pretty much positive you can) you've got the overclocking options to change the chips speed. And overclock it. But, bear in mind you'll probably want more than just the stock cooler on there if you go that route. Generally, overclocked chips run hotter, although mobiles run fairly cool to begin with. Thats at their default settings of course.
 
Alright thanks, I think I will go ahead and look into the Shuttle AN35N-Ultra to run that CPU in my parents system, no sense in letting it sit here.
 
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