> Thanks to Brad (http://www.myplc.com/sony/) for his articles;

You are welcome.

> I upgraded FX215 to Athlon 1500+. AXMH1500FQQ3C came from Ebay ($17).
> WCPUID version 3.3 shows a little disappointing 1.0 GHz and there is not any
possibility to enable SSE support in TWEAKS tab menu.
>

My guess is it is related to Front Side Bus (FSB) speed. Your new processor is
probably designed for a faster FSB than what the FX provides. Which means in the
FX the processor is effectively de-clocked.

The SSE option of WCPUID was removed from WCPUID by the author of the program.


> I tried to overclock a processor but with no stable results.
> Should I have to use another BIOS or processor to get SSE enable?

There are no newer bios versions past the R0121K5.