Intel Core i5-3350P 3.1GHz (H61/B75/H77 motherboard, no overclock)
Intel Core i5-3570K 3.4GHz (Z75/Z77 motherboard, overclocking)
Intel Core i5-4430 3.0GHz (H81/B85/H87 motherboard, no overclock)
Intel Core i5-4670K 3.4GHz (Z87 motherboard, overclocking)
Those are the only Intel CPU's worth the money for gaming. Intel Core i7 is a waste of money, but not if you're rendering, recording etc.