Tirian

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I just purchased a mobile Athlong XP 2500+, and an Abit NF-7S, installed everything correctly as far as I can tell. Windows installed properly, everything seems to work fine, but on boot up and in Windows, my CPU is showing up as an unknown processor running at 668MHz. I am using PC2100 memory, but I think it should still clock properly. Is there something easy I'm missing here?

Thanks,

Rob
 

SidVicious

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Yup, you are missing out on the wonderfull world of Overclocking !

Right now, your CPU is running at the failsafe 5x multiplier on a 133MHz FSB, feel free to set it right away to 14x on the same FSB to yield 1866MHz, the Mobile Barton 2500+ default speed.

Given that you are currently limited to PC2100 memory, overclocking would still be possible but you won't have a lot of maneuvering room. All you will be able to do is to ramp up the multiplier since it is unlikely that your memory will manage to be stable on a FSB above 145-150MHz mark.

Use <A HREF="http://www.mersenne.org" target="_new">Prime95</A> Torture test check your system for any hardware failure, slightly increase the voltage along the way and monitor your CPU temperature, depending on the quality of your cooling system, 2.3 to 2.4GHz is entirely possible since the NF7-S will allow you to pump the multiplier well beyond 17x.





Mobile Barton 2500+ @ 2.5GHz (200MHz x12)
Abit NF7-S V2.0
2x 512MB of Samsung TCC4
Sapphire Radeon 9700 128MB @ 360/310
2x Maxtor 40GB 7200RPM RAID-0
 

Tirian

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Thanks, that's exactly what I needed to know. I have a standard XP 2500 in my other PC and I expected the mobile 2500 to display the same readings right off the bat. (I take it Windows will never identify it as anything other than "unknown processor" though, correct?)
 

DonnieDarko

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(I take it Windows will never identify it as anything other than "unknown processor" though, correct?)
It's your bios not identifying the chip because it's meant for laptops. I did hear that on some motherboards, if you upgrade the bios, it comes up as a xp-m.

Watch out for the <b><font color=red>bloody</font color=red></b> Fanboys!

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SidVicious

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Very few motherboards will properly recognise a Mobile Barton, that does'nt change a thing with the CPU performance, overclocking potential and tweakability through BIOS options.

Proper cooling is necessary if you want to reach a good overclock, an aluminium heatsink with only a few thick fins and a small fan won't get you as far as an all cooper heatsink with a lot of thin fins and a bigger fan.

You will reach a point where you'll have to use higher voltage in order to run stable at a certain frequency, higher voltage will generate more heat, anything under 60C full load is okay, over 65C is a bad thing since it may wear down the CPU and other internal components.




Mobile Barton 2500+ @ 2.5GHz (200MHz x12)
Abit NF7-S V2.0
2x 512MB of Samsung TCC4
Sapphire Radeon 9700 128MB @ 360/310
2x Maxtor 40GB 7200RPM RAID-0
 

Crashman

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The board doesn't know what CPU it is, but it will work the same none the less. You just have to set the multiplier and bus speed manually. It's really unfortunate you only have PC2100 because the CPU should work fine up to around 2.4GHz, but I don't think any boards support an 18x multiplier.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
 

SidVicious

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All multipliers, even the remapped 5 bits ones, are available from the Abit NF7-S V2.0 BIOS, going all the way to 22x.

With the multipliers going that high is more than enough to crank a CPU to 2933MHz on a mere 133MHz FSB.



Mobile Barton 2500+ @ 2.5GHz (200MHz x12)
Abit NF7-S V2.0
2x 512MB of Samsung TCC4
Sapphire Radeon 9700 128MB @ 360/310
2x Maxtor 40GB 7200RPM RAID-0
 

ChipDeath

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What brand is that memory? I had some crucial PC2100 that would do 175Mhz @ CAS 3.

Just play around with the settings, you might get lucky. :smile:

---
Epox 8RDA+ V1.1 w/ Custom NB HS
XP1700+ @200x10 (~2Ghz), 1.4 Vcore
2x256Mb Corsair PC3200LL/1x512Mb Corsair XMS PC4000 2.5-3-3-7
Sapphire 9800Pro (VGA Silencer Rev3) @418/742
 

phial

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i got some samsung pc333 that will do 410 with no voltage increase

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Brand name whores are stupid!
 

Crashman

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Former Staff
Well then, I'd start at 16x and go up from there!

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
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phial

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dont listen to this guy, hes crazy!

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<A HREF="http://www.albinoblacksheep.com/flash/you.html" target="_new">please dont click here! </A>
Brand name whores are stupid!
 

Crashman

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Yes, like a fox.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>
 

skinnyjoint

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i have an xp 2500 and my multiplier is only at 11 and i reach 2500 @ 1.8 im just wondering on the mobiles do you have to bump it up to 14x?
 

Tirian

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Thanks for the responses, I thought that "unknown processor" might show up because the chip is a mobile, but I just wasn't sure and hadn't heard it mentioned anywhere before. That, combined with the fact that it was clocking so slow (and not knowing that I'd have to set the multiplier to just run it to the stock speed) made me a little worried at first.

I wish I had more than just 1 x 512MB PC2100 memory, but I didn't have the cash to buy a new board, CPU, and memory. The next step is to get two 512MB PC3200 chips and then I'll start to play around with OCing a bit more. I'm using a 300W power supply though, and don't really know much about OCing in general, so I'm not sure if that would be pushing things. (Cheap video card in there now, an old MX440 that doesn't connect to the PS.)

As far as what brand the memory is, I'm honestly not sure and didn't think to check before I put the PC back together. I had gotten a complete system built by a whitebox manufacturer (www.tdn.net) a few years back and never really thought to look at it.

Thanks again!
 

Crashman

Polypheme
Former Staff
You don't have to do anything unless you're restricted by your other hardware. For example if you're running PC2100 or a 133MHz bus limited chipset, you'd WANT to increase multiplier rather than bus speed because of your 133MHz limitation. If you didn't have that limitation, you'd WANT to increase your bus speed to the highest possible first, then increase the multiplier to reach your highest clock speed. Mobiles are unlocked.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>