From 2666 to 3000mhz isn't a huge deal but yes 3600+ is will lend you better preformence. I should have specified that 3000mhz ram isnt worth it and that a fairly high speed would be. I assumed that OC would not be upgrading to a speed higher than 3200mgz.
Thanks you for all the answers! I will keep my RAM until I upgrade the CPU. (Which is hopefully after DDR 5 is released and available)