opteron 146 to 175 upgrade, worth it?

[bledd]

i'm not going to go AM2 just yet, 4x1gb corsair 3200 sticks, so would be a shame to 'waste' them

any good review sites comparing single core opterons with dual core opterons? -how do the dual core's usually clock? -my 146 (2.0 stock) is running fine at 2.7, with watercooling and no fans (just a large rad)

mainly use my pc for gaming and encoding sound/video

-edit, also if i'm overclocking anyway, is there any point in getting the 175, should i just go for a 170 or even a 165 (or would the 175 have a 'better' core)

 

[bledd]

exactly what i was thinking, after looking around some more, i've ordered a 175

 

[bledd]

thanks for the reassurance