Oh nice recommendation, I might consider this package
Is the i5 faster than the i7 I heard it is ?
It is all socket 1155 and i3 is the budget and i5 is the middle class with best gamer CPU, a.k.a. 2500K and than i7 is the high end with 2600K.
But for the games, the 2500K is as good as the $100 more expensive 2600K. The K
means that the CPU multiplier is unlocked and it is the best for overclocking.
And since u want to spend some money on the RAM that is now outdated, it makes more sense to get technologically more advanced and way faster system than the ageing 775.
When I upgraded to 2600K from C2D E6750, it was a shock. The HD video encode on the old machine took 17hrs and the 2600K was done in less than 2 hrs.
And if u would get an SSD, it would be a rocket. So I would invest my money on the new system and even that set up will leave the old one in dust. That's how much things improved.
And if u would put $60 more to get the 2500K, that would secure the system speed for years, to be one of the fastest gaming PC's.