Computer upgrades

So I’m upgrading my video card, my pic is over 8 years old and I’m starting to wonder if I should also work on the prosessor and mobo.
I’m currently running

EVGA nForce 680i SLI Motherboard - T1 Version, NVIDIA nForce 680i SLI, Socket 775, ATX, Audio, PCI Express, SLI, Dual Gigabit LAN, S/PDIF, USB 2.0 & Firewire, Serial ATA, RAID

Intel Core 2 Quad Q6600 Processor HH80562PH0568M - 2.40GHz, 8MB Cache, 1066MHz FSB, Kentsfield, Quad-Core, OEM, Socket 775, Processor

I’m getting an gtx1060 which is replacing a gtx550ti

If any one wants a new video card I may know someone looking to sell one they won in a contest, let me know and I’ll see if there still looking to sell it