Do you think that my power supply has enough power or not?

i have an 85% proficient power supply, it is a 650 Watt power supply. What i would like to know is if that power supply is powerful enough to power all of my hardware. I have the AMD FX-4100 processor, the galaxy geforce GTS 450, 4 gig of DDR3 ram, a 40 gig SSD from Intel, and a few case fans. OH and does anyone have any good graphics card suggestions for around 100 bucks?