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Topic Title: Athlon XP 2500+ Barton Problem
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Created On: 03/24/2004 12:27 PM
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 03/24/2004 12:27 PM
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cbar216
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Joined: 03/24/2004

I have been reading through the forums a lot to try and answer this question but it seems nobody has had this exact problem.

I have a Athlon XP 2500+ Barton, Asus A7N8X motherboard, 1GB Corsair Value Select PC3200 RAM (Dual-Channel), Nvidia GeForce FX5900SE.

This setup runs great with everything stock but I went to try and boost the CPU up to a 3200+ by setting the FSB to 200MHz and it won't boot. The system will POST fine, and it reads the CPU as a 3200+ but then when it goes to load Win XP Pro, I just get a black screen and nothing happens.

I then go back and change the FSB back to 166MHz and everything is fine again and I am back to my 2500+ and Windows boots fine.

The only thing I am changing is the FSB and I don't know what the problem is.

My Vcore is the default 1.65V
My memory timings are set to optimal in BIOS: 2.5T - 4 - 4 - 7
My multiplier is still 11

I don't think it is a temperature issue because Asus PC Probe in Windows shows that I idle at 30C and load at 45-50C.

What am I doing wrong? Any help would be much appreciated.
 03/25/2004 02:22 PM
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Aubrey
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It will take more vcore to get it to boot set the memory 3-3-3-3-11
just increase vcore 1 setting at a time 1.675 then 1.70 if necessary. Watch temps carefully.

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Possession of a powerful computer is no substitute for a working brain.
A working brain is no substitute for possession of a powerful computer.
 03/26/2004 04:55 PM
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Wildcard
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Is it possible to alter the FSB in smaller amounts? Start small, test for a few days - leave the CPU loaded down, then keep upping the FSB until it becomes unstable. As the last post suggested, when the system becomes unstable start pumping the Vcore in very small amounts.

Keep her as cool as possible so that she can deliver the goodies

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 03/26/2004 10:28 PM
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cbar216
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Well I figured out how to change it in smaller amounts and so far I am running stable at 188MHz FSB, with my Vcore at 1.7, and my memory timings at 3-3-3-11.

Temperature-wise I am doing well I think, CPU idles at about 33C and load at about 50C.

Thanks for the help and I'll be back to report on if I can get it up to 200MHz.
 03/26/2004 11:22 PM
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Aubrey
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You need to test its stability with prime 95 once in a while its of no use to get there unless its stable!

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Possession of a powerful computer is no substitute for a working brain.
A working brain is no substitute for possession of a powerful computer.
 03/27/2004 12:08 AM
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Hawke
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QUOTE (cbar216 @ Mar 26 2004, 06:28 PM) Well I figured out how to change it in smaller amounts and so far I am running stable at 188MHz FSB, with my Vcore at 1.7, and my memory timings at 3-3-3-11.

Temperature-wise I am doing well I think, CPU idles at about 33C and load at about 50C.

Thanks for the help and I'll be back to report on if I can get it up to 200MHz.
Hello,

50° - 33° = 17 degrees difference between idle and load temps. It wouldn't hurt to look for a better cooling solution. My system runs at 44° idle and 52° load (8 degrees difference) using stock HSF and with a little tweak from Speedfan (100-33-100 idle, 142.7-35.?-142.7 under load). Look here' ">http://forums.amd.com/index.php?showtopic=11305 for a more detailed explanation thanks to Peter.

I know I can improve this if I get a better cooling system but I'm saving for a new system instead. My current system is an AXP1700+ (1.10 ~ 1.57GHz) on a K7S5A
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