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AMD 4000+ San Diego gouing crazy

Last response: in CPUs
November 24, 2012 2:59:33 PM

I bought a second hand AMD 4000+ San Diego CPU for my (old) Asus A8V motherboard.
I tough i can make it faster (originally had a 3000+).

The problem:

The new CPU constantly stays on 70-100% usage, and it performs worse than the 3000+.

Things I tried:

-installed windows 7 (had Xp before)
-Checked for applications running (Processes), nothing found that drains the system (system idle 99%)
-Update BIOS (V.0229)
-Different settings in BIOS
-New driver for the graphic card (just in case)

Once I got it to 61% but than it went again to 100%, at this point sits on 81%.

Can anybody give me more ideas?

My comfig:

Asus A8V
AMD 4000+ San Diego
Nvidia 6600 LE (AGP)
2x512Mb Kingston DDR (400 MHz)
November 24, 2012 3:14:44 PM

May have been damaged when you brought it E.G. broken off pins. personally i would never buy second hand components unless i knew the person who was selling me it.
November 24, 2012 5:11:46 PM

It is hard to buy a new processor for socket 939 ... and previous owner had no problems.

It had no visible damage, and the computer has not frozen or rebooted.
It just wont work properly.
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November 24, 2012 5:17:37 PM

It's a san diego , it's trying to figure out if it's bi or not . Try turning off indexing see what happens .
I f you need I have an Opteron 175 ,2x 180 an athlon 5200 all dual cores , I can send you one if you want , I'm not using them
November 24, 2012 5:42:37 PM

I think I found it.
I used process explorer and noticed that the interrupts were using 65-70% of the CPU.
I have removed 3 PCI cards (Sound blaster live, fire wire and USB adapter) from the PC, now the processor works fine.
I just have to figure out which one is to blame.
November 24, 2012 6:20:17 PM

Now I know for sure. There is some conflict with the lower PCI port. No mater what card i plug in the problem comes back.(I think it came with the BIOS update)

I have rearranged my cards and now it works perfectly!
November 25, 2012 10:35:05 PM

was looking for an x2 4800+... but don't want to spend to much on this system.

Anyway the 4000+ works fine now
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November 25, 2012 10:59:09 PM

I think the Opteron 180 x2 is fater than the 4800 , runs at 2.4 ghz if I remember