Reduced processor speed and DC30+

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Bakersboy
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Joined: Mar 6 2002

Just upgraded from Celeron 400 to AMD XP2100+ using K7S5A motherboard. System was running fine, and have now added DC30+, which seems to be working really well, only thing is my system shows the processor as XP1500+. Nothing else has been changed, has anyone any help or suggestions?

Trevor Page
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Joined: Oct 4 1999

Check the FSB jumper on the motherboard. It should be set to 133 MHz. If it is set to the default 100MHz, the XP2100+ has an FSB multiplier locked at 13.0x giving a clock speed of 1330GHz, which happens to be the same clock speed of an XP1500+ (133MHz with locked multiplier of 10.0x). The speed should be 133MHz x 13 - 1.73GHz for an XP2100+. Common mistake to make!

Trev

Bakersboy
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Joined: Mar 6 2002

Thanks for your thoughts, and if it had never run at 2100 I would have said you had probably been exactly right. The computer has been running at 2100 for about 2 weeks,(from new) then the clock and date went wrong, I corrected it and a few hours later added the DC30+, then I noticed the speed of XP1500 and 1300Mhz, I therefore assumed my tinkering had been the cause. Speaking to a friend who bought the same computer from the same firm, he had the same problem, and has so far been cured with a replacement motherboard and memory.....could your theory still be right, a change in jumper setting would save having to go back to the shop.....

Your thoughts are greatly appreciated....

Bakersboy
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Joined: Mar 6 2002

Another thought, running Sis-Soft Sandra (I think thats the right name) even before this said that the FSB was set too high, do you think that the jumpers were set at the shop wrong and its reverted to a lower setting by failure?
I'll read the motherboard booklet over lunch and check the jumper setting.....

Trevor Page
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Joined: Oct 4 1999

Just checked the manual for version 3.0 of your board, and guess what? it doesn't have an FSB jumper. The FSB is set using an option in the BIOS. The option is on the CPU PnP setup page, make sure both CPU frequency and DRAM frequency are set to 133MHz.

Trev

Bakersboy
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Joined: Mar 6 2002

After digesting the manual and my lunch, I was left puzzled as how to change the FSB jumper settings, but you were well ahead of me! I have changed the settings as per your previous posting and it is now showing the full XP2100+ on boot up.

Thank you Trevor for your help, I really appreciate all of your help and effort.

My only worry now is what made it revert to 1500+ on Dec 28th.......

Thanks again and Best Wishes for the New Year.

Trevor Page
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Joined: Oct 4 1999

At a guess, I'd imagine that either you loaded BIOS defaults, or the CMOS was accidentally reset when you installed the DC30+. Another reason could be a flat battery on the motherboard, you'll soon know because it will happen again.

Trev

Bakersboy
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Joined: Mar 6 2002

Thanks for the info Trevor, I have again learned something useful from this forum, and know what to do if it happens again.
My DC30+ is working better on the Athlon rather than my old Celeron 400, I never could get the audio to work right through the DC30+, and had to use the onboard sound. Using audio with the DC30+ would drop 20 to 40% of playback frames, the onboard sound would not cause any to be dropped. Both sound sources work fine with my new Athlon, now its time to finally get to grips with Premiere......

Thanks again...