used X2 3800

Q: Was this CPU overclocked?

A: Yes, initially I was able to run it at 2.3GHz (stock voltage.) The CPU ran this way for about 8 months. But as the summer months came, I found that running 2 intensive programs would cause the CPU-fan to spin faster (and noticeably louder.) After the first crash, I dropped down to 2.2GHz. THIS IS NOT A GUARANTEE OF OVERCLOCKING. (You may be able to better +or+ worse, depending on your components, and whether you're willing to risk overvolting the CPU. I did not overvolt the CPU, and I always enabled the 'Cool And Quiet' feature.) The real reason I'm dumping this CPU is that I found a lot of software (games) just doesn't work properly with a dual-core CPU. For example, Neverwinter Nights would exhibit stuttering problems (speedup followed by slowdown). A few others would actually crash to desktop (until the developer released a patch.) Other general Windows problems can be fixed through various Windows/XP 'hotfixes' put out by Microsoft. One problem had no solution -- the NVidia Nforce4 USB2 controller would simply hang the system, no matter what speed I ran. I had to buy a PCI USB2 card. This general behavior occured with 2 other X2/3800+'s at my workplace (purchased at the same time, on different Nforce4 motherboards), so I'm confident this CPU for sale is not damaged/defective. If you do research on the web, you will find my criticisms come up pretty often (and some apply to Intel dual-core CPUs, as well.) One thing I did not try, was to disable Cool and Quiet, and disable power-management under Windows. This actually fixes a lot of problems, and overclocking-users tend to do this. I did not, because this system was required to run 24hrs/7days (most of the time, idle), so I made power-reduction a priority over everything else.

will the dual core cpu not run single core games well?
 
Well mate first of all a 3800+ is an awesome CPU. Especially for overclocking.

Now overclocking should be done in a careful way and you should ensure you spend a bit of money on decent cooling to get the best out of a chip. The stock cooler is OK, but no match for a decent aftermarket cooler.

When overclocking Cool N Quiet should NEVER be enabled. This throttles BACK the CPU speed and also if overclocked the program gets confused as to what speeds the CPU should use. Also "CPU thermal throttling" should be disabled as this will do the same thing.

You should always watch your CPU temperatures closely and if you suspect they are not quite right (too low or too high) then you should check both in the BIOS and with a thermal probe.

As for dual core performance problems: you should try this fix. It worked 100% for me and has for MANY others.

The USB thing is either a windows issue or perhaps a motherboard problem as I have NEVER experienced any issues with USB. Try updating your chipset drivers
 
as for long term performance drop i shouldnt think that an OC as low (in comparison to what theyre capable of) as that would cause any damage to the chip
 
name='llwyd' said:
as for long term performance drop i shouldnt think that an OC as low (in comparison to what theyre capable of) as that would cause any damage to the chip

Yep agreed...especially on stock volts
 
go for it, its a fantastic CPU for the money. on stock speeds it falls around the highest end of the family cpu market, overclocked fully it comes at around the middleish of the high performance market
 
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