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CPU working SLOW (Athlon II X3 450)

post #1 of 22
Thread Starter 
Hi. I just registered to the forum because I'm having a problem with a CPU I bought and I couldn't find any answer googling.

So here's the thing...

Last week the CPU at one of the computers in my office died, so I bought a new combo: Athlon II X3 450 + ASUS M2N68-AM Plus.
As I was installing things, I opened the CPU Box and somehow the blister got opened and the CPU fell from 50-60 cms. to the desk, with the pins down. Lots of pins got bent (like 15 or so) and obviously it didn't fit in the socket. So I spent almost an hour carefully putting back the pins into place with a very thin screwdriver. Finally, after a lot of work and eye strain, the processor fit in the socket with only a minimal amount of pressure put into it.
Then I proceeded to assemble the rest of the computer and turn it on. It boot up and the BIOS showed the processor correctly and everything seemed to be fine. So I did a fresh install of Windows XP Professional + SP3.
When the OS installation was complete, I installed all the drivers and then the most basic programs I use to work. But as I was doing that, I noticed frequent hangs and an overall big slow down. I mean, the computer didn't crash or rebooted, but it hanged for like 2-3 mins. very frequently, and then continued installing. It took like 15 mins. to install a 30 MB program...
I thought it could be a hard disk issue, so I downloaded Passmark Performance Test to check things.
The results were not what I expected... the hard drive performance was average, as were memory, graphics and everything else. What caught my eye was the CPU Mark: 890. I compared that to other baselines with the same processor, and those baselines had something around 2800-2900, which means the CPU is working at ~30% its full capacity.
After that, I went to ASUS Support Page and downloaded the latest BIOS for my mainboard. I flashed it using the BIOS-built in EZ Flash 2 utility and ran the very same benchmark one more time. Nothing changed. Still 890 points...
I thought, perhaps, it was the program not doing the benchmark correctly. So I downloaded SiSoft Sandra. Here, the result was worse: While the program was examining my CPU for speed, frequency, features, etc., it shut down abruptly. I booted Windows again and did a 2nd try: same result, it shut down abruptly again.
Well, maybe some features of the CPU aren't working I thought... so I downloaded CPU-Z to be sure. The program showed Athlon II(tm) X3 450, Speed 3200 Mhz, with features SSE, SSE2, SSE3, SSE4A and some other things. But, it showed: "Cores: 1. Threads: 1"...

Could it be that for some reason only one core out of the three is working?

Well, I honestly don't know what to think. This is the first time something like this happens to me.

I'll really appreciate any response from you guys.

Thanks!

IMPORTANT ADDITIONAL INFO:

Here's something that could be the reason...

When I turned on the PC the first time after assembling, the older installation of XP wouldn't boot. As soon as the Windows XP logo appeared, the computer shut down.

I thought it could be something related to power options, so I went to the BIOS and disabled ACPI APIC Support. Then restarted the computer and the OS still didn't boot, but at least it didn't shut down my computer either.

It was after that that I made a clean installation of XP from scratch.

But now I've read in several ACPI-related articles, that with APIC disabled, only one core is active. So that should be the reason why my CPU is slow and why CPU-Z shows only one core.

Tomorrow I'll try enabling APIC again. If it still shuts down like it did yesterday, I'll let you know.
Edited by diego_vizia - 5/4/11 at 9:15pm
post #2 of 22
reset the bios, check in there to make sure everything is right.
post #3 of 22
First thing you might want to try is update the BIOS. That motherboard uses an older chipset. There's a slight chance the BIOS may not have the CPU code for that CPU.
post #4 of 22
Check those pins again it should just "drop" in, and in future never open cpu boxes that far from the workspace.
I hope you haven't broken a pin off (really bad thing).
Aces and Eights
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CPUMotherboardGraphicsRAM
955 X4 BE [3.82 Ghz] Lanparty DK 790FX  HIS 6870 X 2 CFX 4Gig OCZ Reaper DDR2 800 
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2X Hitachi 1TB raid 0 Seagate Barracuda Sony DVD RW DRU 830A  Coolermaster Hyper 212+  
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Aces and Eights
(15 items)
 
  
CPUMotherboardGraphicsRAM
955 X4 BE [3.82 Ghz] Lanparty DK 790FX  HIS 6870 X 2 CFX 4Gig OCZ Reaper DDR2 800 
Hard DriveHard DriveOptical DriveCooling
2X Hitachi 1TB raid 0 Seagate Barracuda Sony DVD RW DRU 830A  Coolermaster Hyper 212+  
OSMonitorPowerCase
Win 7 64Bit Benq HD 2200 Antec True Power 650W HAF 932 
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post #5 of 22
Did you reinstall windows with the new hardware?


If you're running drivers for a different chipset it could play havoc




If it was just a processor swap then no need to reinstall windows, but the mothrboard with the northbridge/southbridge chipset drivers you would really need to reinstall
post #6 of 22
Thread Starter 
Quote:
Originally Posted by flyin15sec View Post
First thing you might want to try is update the BIOS. That motherboard uses an older chipset. There's a slight chance the BIOS may not have the CPU code for that CPU.
Yeah, I already did that. I forgot to mention it..

I downloaded the latest BIOS from ASUS website and flashed it using EZ Flash from the BIOS itself after the first Performance Test benchmark. Then I ran the benchmark again and had the same result. It was after updating the BIOS that I downloaded SiSoft Sandra and CPU-Z.
post #7 of 22
1) Make sure the CPU is running at the appropriate frequency. With an old BIOS or such you would be limited to ~800 Mhz.
2) Memtest86+
Waiting on X399
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Waiting on X399
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II B57 @ X4 3.9 Gigabyte 790FXTA-UD5 Sapphire Radeon 290 8 GB G.Skill 2133 
Hard DriveCoolingOSKeyboard
250 GB 840 EVO Noctua NH-D14 Windows 10 Logitech K350 
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Seasonic x750 Corsair 600T Logitech G100s Razer Goliathus Speed 
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Plantronics Gamecom 788 
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post #8 of 22
Thread Starter 
Quote:
Originally Posted by Doom View Post
Check those pins again it should just "drop" in, and in future never open cpu boxes that far from the workspace.
I hope you haven't broken a pin off (really bad thing).
No, no pins were broken. I checked that immediately after it fell to the desk. I could try to remove the CPU and straighten the pins a little more precisely. But I don't know if it would make a difference. After all, the CPU fit into the socket and the CPU boot up... perhaps I could give it a try.
post #9 of 22
Thread Starter 
Quote:
Originally Posted by beers View Post
1) Make sure the CPU is running at the appropriate frequency. With an old BIOS or such you would be limited to ~800 Mhz.
2) Memtest86+
Yes, the CPU is running at 3200 Mhz. I checked that with CPU-Z. Besides, I already updated to the latest BIOS.
post #10 of 22
Quote:
Originally Posted by diego_vizia View Post
No, no pins were broken. I checked that immediately after it fell to the desk. I could try to remove the CPU and straighten the pins a little more precisely. But I don't know if it would make a difference. After all, the CPU fit into the socket and the CPU boot up... perhaps I could give it a try.
If the cpu boots its fine, if a pin was broken or missing it'd not work



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