Replying to New chip and mobo recomendations

So my chip has just taken out my mainboard of my processing rig, gutted.

I now need a new processor, motherboard, and seeing as I'll take this as an opportunity to upgrade to an i5, DDR3 sticks too.

My budget is about $500, but is a little flexible. I need about 6ish gig or ram.

Cheers NS