Hi sifus, please recommend me mobo, cpu and possibly ram.

Budget: +-800 (for mobo and cpu, if possible ram also)
Reuse: Silverstone Strider 560W, 2x ATI HD4850 GPU, 500TB Sata HDD
For 24/7 use, gaming, mild programming and downloads.

Note: CF or no CF also no problem. Will upgrade next time. Prefer AMD but Intel ok also.
Thanks!