pentium d vs pentium g


Yeah, Haswell is an option too. Here's what I would suggest:

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Pentium G3220 3.0GHz Dual-Core Processor ($59.99 @ Newegg)
Motherboard: ASRock B85M Pro4 Micro ATX LGA1150 Motherboard ($77.55 @ Newegg)
Memory: G.Skill Ripjaws Series 8GB (2 x 4GB) DDR3-1600 Memory ($49.99 @ Newegg)
Total: $187.53
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-12-04 19:43 EST-0500)

Edit: Curses... the G3220 doesn't support DDR3-1600. And the G3420 costs quite a bit more (might as well get its faster brother, the G3430, instead).