450W does not mean that output will be also same.
CM600 works on almost 70% efficiency and VX450 works at 85% efficiency, fthese are from the data sheet of the PSU.
CM600 = 420W real output and VX450 = 382W real output, on max loads, that is wha nish means
You will bring home a relatively inexpensive power supply that even though is sold as being a 450 W unit can deliver up to 570 W at 48º C – in fact Corsair could have easily labeled this power supply as a 500 W unit, but they preferred to stay on the safe side.
Yes it will handle it easily.
This is what i am using in my PC and i use VX450,
C2D E8500
Biostar P35
ATI 4850
Samsung DVD-RW
WD 500Gb + Seagate 160GB + Seagate 320GB
8500= 12000
vx450=3600
That sux huge difference in the price of E8400 and E8500. In NewEgg the difference is less than 15$. When did you purchase it??