my friend is using a core2quad 9650 coupled with a gtx550ti with 4gb ddr2 800mhz ram and a 1600x900p display my question s in the Gaming CPU Hierarchy Chart it' said I don’t recommend upgrading your CPU unless the potential replacement is at least three tiers higher. Otherwise, the upgrade is somewhat parallel and you may not notice a worthwhile difference in game performance.what does this the processor i mentioned is at 3rd tier as per my view so should i stay with my processor so that i can play all the latest games without any cpu bottleneck?