danmoshe :
i have 2 quad q9550 i just came across with the AMD FX-4130 and just wondering how big of a difference there is ?
If you are looking at an upgrade, forget AMD. Period. They don't offer anything, in 2014, much better than Intel's Core 2 Quads from 2008.
Get an Intel i5, or even i3 based system. Pair it with a cheap $50 H81 motherboard, buy some DDR3 RAM, reinstall Windows, and you just majorly upgraded your system. That's what i'd do.
Hope that helps!