NF2 board with lowest VCore

Jordan · Post by **Jordan** » Wed Jun 16, 2004 7:40 pm

Can someone let me know of the nForce 2 board with the lowest VCore setting. I have an Asus A7N8X Dx and it only lets me take my XP-M 2500+ as low as 1.575V.

Does anyone know the NF2 board with the lowest VCore setting or can you at least tell me the VCore for your board if you have anything different?

Particularly interested in DFI Ultra B and Abit NF7-S.

Thanks

Jordan

peacefulpc · Post by **peacefulpc** » Wed Jun 16, 2004 8:21 pm

the abit nf7 goes down to 1.1, but with my 2200+ mobile, it's unstable under 1.2 or so. it is very stable at 1.2, 5x multiplier and 100 mhz fsb. you could probably tweak it down stably to 400 if you experimented a bit...

good luck!

AZBrandon · Post by **AZBrandon** » Wed Jun 16, 2004 8:44 pm

peacefulpc wrote:the abit nf7 goes down to 1.1, but with my 2200+ mobile, it's unstable under 1.2 or so. it is very stable at 1.2, 5x multiplier and 100 mhz fsb. you could probably tweak it down stably to 400 if you experimented a bit...

good luck!

AMD appears to now have two Mobile 2200's now. A Thoroughbred version rated to run 1.8Ghz at 1.45v and a Barton one rated to run 1.667Ghz at 1.35v. I'm just curious, which one do you have? I believe the 1.35v version is a newer release from AMD, and might have a lower minimum voltage than the Thoroughbred 1.45v version.

peacefulpc · Post by **peacefulpc** » Wed Jun 16, 2004 8:51 pm

AZBrandon wrote:
peacefulpc wrote:the abit nf7 goes down to 1.1, but with my 2200+ mobile, it's unstable under 1.2 or so. it is very stable at 1.2, 5x multiplier and 100 mhz fsb. you could probably tweak it down stably to 400 if you experimented a bit...

good luck!
AMD appears to now have two Mobile 2200's now. A Thoroughbred version rated to run 1.8Ghz at 1.45v and a Barton one rated to run 1.667Ghz at 1.35v. I'm just curious, which one do you have? I believe the 1.35v version is a newer release from AMD, and might have a lower minimum voltage than the Thoroughbred 1.45v version.

that is true! i have the barton core, 1.35v. i've read that some folks are running it at 1.1, maybe at a higer multiplier/fsb than i am? i'm pretty happy with the performance and heat at 1.2/5x/100, so i haven't delved much further.

AZBrandon · Post by **AZBrandon** » Wed Jun 16, 2004 9:02 pm

peacefulpc wrote:that is true! i have the barton core, 1.35v. i've read that some folks are running it at 1.1, maybe at a higer multiplier/fsb than i am? i'm pretty happy with the performance and heat at 1.2/5x/100, so i haven't delved much further.

I can imagine you'd be pretty happy. I found my mobile at 3x166 (500mhz) runs quite cool and is still fast enough for nearly any of the regular work I do on my PC. I don't have voltage control though, so mine's stuck at 1.55v. That works out to a max of around 14.4 watts, estimated. At 1.2 volts, that should drop it to a maximum of about 8.5 watts or so.

Considering I don't even need to run my heatsink fan at all, just the PSU and case fan at 500mhz on my system, I'd imagine you either have incredibly low CPU temps, or can very easily passively cool as long as there's half-way decent airflow within the case. Now I'm all jealous about not being able to undervolt my chip.

peacefulpc · Post by **peacefulpc** » Wed Jun 16, 2004 9:32 pm

AZBrandon wrote:
peacefulpc wrote:that is true! i have the barton core, 1.35v. i've read that some folks are running it at 1.1, maybe at a higer multiplier/fsb than i am? i'm pretty happy with the performance and heat at 1.2/5x/100, so i haven't delved much further.
I can imagine you'd be pretty happy. I found my mobile at 3x166 (500mhz) runs quite cool and is still fast enough for nearly any of the regular work I do on my PC. I don't have voltage control though, so mine's stuck at 1.55v. That works out to a max of around 14.4 watts, estimated. At 1.2 volts, that should drop it to a maximum of about 8.5 watts or so.

Considering I don't even need to run my heatsink fan at all, just the PSU and case fan at 500mhz on my system, I'd imagine you either have incredibly low CPU temps, or can very easily passively cool as long as there's half-way decent airflow within the case. Now I'm all jealous about not being able to undervolt my chip.

i can run it with a quiet fanned ps and no cpu or case fan - very nice! with the coolmax fanless ps it get's a bit too toasty after an hour, and i turn it off. tomorrow, i try the silentmaxx, which is much better at getting heat out of the case. a fanless case may be possible! otherwise, an external brick should be workable with that low of power.

with a spinpoint in a smartdrive enclosure, i struggle to hear noise with my ear pressed to the case

nutball · Post by **nutball** » Thu Jun 17, 2004 1:26 am

Jordan wrote:Can someone let me know of the nForce 2 board with the lowest VCore setting. I have an Asus A7N8X Dx and it only lets me take my XP-M 2500+ as low as 1.575V.

Does anyone know the NF2 board with the lowest VCore setting or can you at least tell me the VCore for your board if you have anything different?

If you're prepared to mod your CPU you might able to get the Vcore down on the A7N8X-DX -- I have that very same board, and modded my Barton 2800, it now runs at 1.475V.

trodas · Post by **trodas** » Thu Jun 17, 2004 2:28 am

Both the almost identical (except the Lanparty Gigabite network) DFI mobos (Ultra Infinity and Lanparty) allow you Vcore settings from 1.00V to 2.00V

Jordan · Post by **Jordan** » Thu Jun 17, 2004 7:08 am

Thanks to everyone who replied!

I'm not really looking to go to 1.1V! I just wanted something that would at least let me run an XP-M at stock. I won't sacrifice performance by that much but I'm always looking to run quieter around the 1.8GHz mark.

Most importantly I was looking for a Mobo that would let me get down to 1.35V as I saw the 35W XP M corea also. You can get 2400+ 35W, 1.35W Barton cores which really interested me.

trodas · Post by **trodas** » Thu Jun 17, 2004 7:27 am

Well, to be honest, I started collecting these infos from various mobos and store it there:
http://trodas.wz.cz/index.php?act=ST&f=5&t=115

...there is not so much infos ATM, but I hope some users contribute values for their mobos, so...

/me starting to think that I should add also quotes about odd things, like the DFI mobos support Vdimm up to 3.8V with a little trick (no mod!) and the MSI KT6V mobo have a very strange gap on Vcore settings between 1.850 and 2.00V - simply nothing there!

T. Random · Post by **T. Random** » Fri Jun 18, 2004 1:15 am

The Abit NF7-S has served me well can can go down to 1.1V, or, accounting for the fact that my mobo undershoots the nominal voltages, to 1.06V, which suffices to keep my Barton 2500+ running at 1.1 GHz. I just posted some voltage/frequency/power consumption measurements in another thread.

http://forums.silentpcreview.com/viewto ... c&start=33

flo-w · Post by **flo-w** » Sun Oct 24, 2004 8:12 am

I'm running an XP-M 2500+ on an Abit NF7. Using only the bios, I can go all the way down to 1.1 volt at 1.4GHz (7.0 x 200), so I guess I'm a lucky bastard.

Still, I would like to go further down on the Watts, even if I have to give up some speed. Only lowering the speed doesn't do much, so I wanna lower the Vcore even more. Is this possible?

I ran 8rdaVcore, but it doesn't seem to go lower than 1.1V. I also ran CrystalCpuID, and it does show Vcore-options beneath 1.1V, but my system freezes when I try to apply a change.

Is there anyway I can get my NF7 to lower the Vcore beneath 1.1V? Thanks in advance!

flo-w · Post by **flo-w** » Fri Dec 10, 2004 5:18 am

Hello? Anybody? So I guess this is not possible, not even with some hardware mod?

burcakb · Post by **burcakb** » Fri Dec 10, 2004 6:16 am

If your computer locks up with too low VCore settings, it's probably not possible to go below. You might try getting both the FSB and the multiplier down (underclock); that MIGHT allow a lower VCore.

btw, why do you want to go lower? 1.1V is very very low, I'm sure you can cool it easily & quietly.

NF2 board with lowest VCore

NF2 board with lowest VCore

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