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Old 02-02-2005, 02:21 PM   #1
CloudBuilder
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Asus mobo troubles


Asus A7V8X-X with Sempron 2500+

Hello,

I have some troubles with the combination above.

After some googling I came to the conclusion, that the AMD should run 1833 MHz.

That is obtained by setting the CPU external frequency on 166/33 and the CPU multiple on 11.

But the thing doesn't want to work with this setting. The maximum is 1700 MHz. and that's it.

The Vcore is also not in the right setting. According to the manual, you should set the over_volt jumper to default (2-3).

With that setting you should get a selection from 1.5 to 1.85 v.

The setting 1-2 should give a selection from 1.7 to 2.05 v.

Changing the jumper does however give me no other range.

Has anybody experienced the same problems, or does anyone have a solution?

Thanks!

CloudBuilder.
 
Old 02-02-2005, 09:22 PM   #2
kak
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Which bios version are you running?
Acording to Asus you need version 1010
http://www.asus.com.tw/support/cpusu...ron%202500+%20(Model%208)&BIOS=1010
 
Old 02-03-2005, 04:35 PM   #3
CloudBuilder
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Quote:
Originally posted by kak
Which bios version are you running?
Acording to Asus you need version 1010
http://www.asus.com.tw/support/cpusu...ron%202500+%20(Model%208)&BIOS=1010

Both mobo's have 1011 so this should not be the problem, although on their website Asus have as latest bios 1010 ......

Seems not logical to load a lower version number bios in the board....


CloudBuilder
 
Old 02-04-2005, 06:53 AM   #4
kak
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I am assuming this is an A-socket?
Specs from NEWEGG.com

Quote:
AMD Sempron 2500+ 1.750GHz, Socket A Processor - Retail
- Specifications -

Model: AMD Sempron
Core: Thorton
Operating Frequency: 1.750GHz
FSB: 333MHz
Cache: L1/64K+64K; L2/ 256KB
Voltage: 1.65V
Process:0.13Micron
Socket: Socket A
Multimedia Instruction: MMX, SSE, 3DNOW!, 3DNOW!+
Doubled check AMD's site it should be running @ 1.75GHZ
http://www.amd.com/us-en/Processors/..._11683,00.html
 
Old 02-04-2005, 08:13 AM   #5
NoobieDoobieDo
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Why do you believe the clock speed to be the problem ?

Or more specificly, what exactly IS the problem ?

I had a AMD XP 1400+ (or whatever) that ran @ 1.2ghz by default. I was able to use it in Mandrake 10 on an Asus A7N8X at clock speeds from 1.2ghz to 1.99 Ghz with no troubles.
 
Old 02-04-2005, 10:09 AM   #6
CloudBuilder
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Quote:
Originally posted by kak
I am assuming this is an A-socket?
Specs from NEWEGG.com



Doubled check AMD's site it should be running @ 1.75GHZ
http://www.amd.com/us-en/Processors/..._11683,00.html

Yes socket A with 400/333 mhz fsb support

CloudBuilder
 
Old 02-04-2005, 10:14 AM   #7
CloudBuilder
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Quote:
Originally posted by NoobieDoobieDo
Why do you believe the clock speed to be the problem ?

Or more specificly, what exactly IS the problem ?

I had a AMD XP 1400+ (or whatever) that ran @ 1.2ghz by default. I was able to use it in Mandrake 10 on an Asus A7N8X at clock speeds from 1.2ghz to 1.99 Ghz with no troubles.

1.

As a stated I can't get a clock speed above 1700 , if I select I need a reboot and machine opens the bios and says there is something wrong with the speed.

Default it runs only 1100.


2.

Can't get the voltage below 1.75 even if the jumper is in the right position.


CloudBuilder
 
Old 02-04-2005, 03:59 PM   #8
Electro
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Your question or problem is not Linux.

I do not see a BIOS version 1011 for your motherboard at ASUS site. Pick either motherboard that does not have an OS installed. Then flash its BIOS with 1010_X. It should not have any problems if you do not have an OS installed although Linux does not care about the BIOS version.

BTW, the ABIT NF7-S2 is a lot better motherboard than ASUS A7V8X-X and it is designed for the Sempron.
 
Old 02-04-2005, 05:12 PM   #9
CloudBuilder
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Quote:
Originally posted by Electro
Your question or problem is not Linux.

I do not see a BIOS version 1011 for your motherboard at ASUS site. Pick either motherboard that does not have an OS installed. Then flash its BIOS with 1010_X. It should not have any problems if you do not have an OS installed although Linux does not care about the BIOS version.

BTW, the ABIT NF7-S2 is a lot better motherboard than ASUS A7V8X-X and it is designed for the Sempron.

Isn't this a hardware related forum ?
I can't install any os as long as the mobo does not function.

Do you assume I didn't look at the Asus site? I can also read, my mobo has I bios version 1011.

Are you seriously suggesting, that I should load a lower version Bios?

Please learn me and a lot of people how you install linux if the mobo does not start up. I thought I know something about mobo's and linux, but this is new to me................

It doesn't interest me at all if Abit is better, I think there will be at least half a dozen mobo's better than your Abit! If you do not have answers, than do not answer!

My questions where very simple :

1 Did I specify the right clock speed. Obviously I didn't.

2 Has anyone else problems with the power setting of this Assus mobo.

If you use Abit, that is fine, but you can't help me on the last question......................


CloudBuilder
 
Old 02-04-2005, 09:41 PM   #10
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Quote:
Isn't this a hardware related forum ?
Yes, but your issue is not Linux. Your problem is general which should go in the general forum.

The Vcore should b set at 1.6 volts. The FSB multiplier should be at 10.5. This information is for model 8 of Semprons.

I do not know how you got the 1011 BIOS version.
 
Old 02-05-2005, 10:12 AM   #11
CloudBuilder
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Quote:
Originally posted by Electro
Yes, but your issue is not Linux. Your problem is general which should go in the general forum.

The Vcore should b set at 1.6 volts. The FSB multiplier should be at 10.5. This information is for model 8 of Semprons.

I do not know how you got the 1011 BIOS version.

I didn't see any intervention from the moderators so....... I do not agree.

Yes I know the Vcore should be set at 1.6 but that is not possible (see first posting and several replies....)

Yes the multiplier should be at 10.5 at 163/33 but that does not work (see previous postings).

Thanks anyway for your reply and all the other replies. I got the info from AMD (thanks kak), as I said I can live with 1700 but i was worried more about the Vcore .

CloudBuilder
 
Old 02-05-2005, 11:24 AM   #12
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Starting off, by looking at this page, you'll realize why your computer is not recognizing the sempron correctly. You need at least BIOS version 1012 for sempron to be supported:

http://www.asus.com/products/mb/sempron_support.htm

Take a stroll over to this page here:

http://www.asus.com.tw/support/downl...elName=A7V8X-X

And get the 1013 BIOS version. That's the latest official BIOS although there's also a 1014 beta BIOS out. During my time with a P4P800D, I tried beta BIOSes but they never seemed to offer anything different and the fact that betas are not necessarily stable brought me back to official BIOSes. Then flash the 1013 BIOS and you should have sempron support. Even the release notes for both 1012 and 1013 bios versions state that they include more CPU compatability so yeah....

Ok, I'm not too familiar with the Socket A platform (used S478 and currently S754). In any case, the first thing to do is find out what clock speed your CPU is supposed to run at. If that newegg specs page is to be trusted, then 1.75GHz should be what it's running at. So that should be 10.5 x 166MHz FSB. Now if you actually have a AthlonXP 2500+ and not a Sempron 2500+, then the 1833MHz speed makes sense since AXP 2500+ are bartons running at 1833MHz with a 11 multiplier. Therefore as does the 1100MHz that you're saying it's currently running at. Instead of running at 166MHz, your BIOS has it set at 100MHz FSB. So it should be a matter of changing the FSB from 100MHz to 166MHz. Make sure your RAM can take that speed. If not, you'll need to put in a FSB:RAM divider lower than the 1:1 usually used.

As for your core voltage, I worked on your mobo for a friend at one point and the overvoltage jumper actually does nothing for the actual values for voltages in the BIOS. However, IIRC the overvoltage jumper just adds .2V on top of what you select in the BIOS. Therefore, 1.85V would turn into 2.05V even though the BIOS doesn't have an option for 2.05V. Just remember that. You should not have the overvolt jumper set. It should be at default as the Sempron doesn't need that high of voltages. Unless you're overclocking that is. Then you'll probably want better than just stock cooling.

I'm thinking that the base of your problems comes from the fact that BIOS version 1011 that you say you're currently running does not support Semprons. Update to 1012 at the very least.
 
Old 02-06-2005, 07:37 PM   #13
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Thank you very much, with this answer I can get the mobo running on the proper speed and voltage.

CloudBuilder
 
Old 02-06-2005, 07:48 PM   #14
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Dind't read the responses, so someone may have answered this but the SEMPRONS do not run at the same clock speed as the Athlon XPs. The Sempron 2500+ runs at 1750MHz.
 
Old 02-06-2005, 08:05 PM   #15
chuck232
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Quote:
Originally posted by CloudBuilder
Thank you very much, with this answer I can get the mobo running on the proper speed and voltage.

CloudBuilder
Hoy not a problem. We're all here to help.

And to ShakyJake:

Yes, we know, I just wasn't entirely sure as he said it ran at 1100MHz which would mean 100Mhz FSB x 11 mult.
 
  


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