No point in a G3258 in a facebook machine. I recommend snatching a cheap APU such as this:
PCPartPicker part list:
http://pcpartpicker.com/p/qkBqZL
Price breakdown by merchant: http://pcpartpicker.com/p/qkBqZL/by_merchant/
CPU: AMD A6-6400K 3.9GHz Dual-Core Processor ($54.98 @ Newegg)
Motherboard: Asus A78M-E Micro ATX FM2+ Motherboard
Memory: G.Skill Ripjaws X Series 4GB (1 x 4GB) DDR3-1866 Memory ($27.99 @ Newegg)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($52.99 @ Newegg)
Case: Rosewill I3-397-BK MicroATX Mini Tower Case w/400W Power Supply ($52.98 @ Newegg)
Total: $188.94
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-09-16 18:28 EDT-0400
Keep in mind that this is in USD