I would suggest going for the Ivy Bridge mainly because its 10-15% better clock per clock. Regarding the proper motherboard...
If you choose an Ivy Bridge, definitely get a Z77 for SLI and Overclocking...Quixby PermalinkProcessor
: Intel Core i5-3570K Quad-Core - BX80637I53570K
($237.89 @ Amazon)Motherboard
: GIGABYTE Intel Z77 - GA-Z77X-UD3H
($159.99 @ Amazon)Total:
Does that MOBO support Thunderbolt?