i already had the other components as my old mother board blew up i will upgrade componentsas and when main question is is the i5 3330 as good as i5 2500
The ivy-bridge architecture is about 10% faster than the old sandybridge at the same clock speeds.
So let us do the math
Clock speed difference between i5-2500 (3.70) and i5-3330 (3.20)
3.70 / 3.20 = 1.15625
1.15625 - 1 = 0.15625
0.15625 * 100 = 15,625%
So, if we cut 10% from the 15,625%
15,625% - 10% = 5,625%
The i5-2500 will be slightly faster. But will also consume more power in the process.