@VooDooMedic
If it's for gaming, not necessary at this moment. The only games that really weigh heavy on the cpu are mostly rts ones.
But, if you have the money and are using multiple hds/monitors, it's never a bad deal.
@VooDooMedic
It's very likely it's your graphics card but it could be your hard disk too, if it started dropping frames suddenly.
It should be in a ssd and, if you don't have one, try installing it into a different hd.
Sometimes it is cheaper to buy a new computer than to upgrade a computer the older the computer the more often this is true
@Zeb it's not the ssd