Got a new Radeon 6770 on the way. My current GPU is an AMD Athlon 7550 Dual-Core. How much of a bottleneck would my current CPU create? Would it be too ridiculous for games such as Metro 2033, Skyrim or STALKER w/ complete 2009 mod?
Also, subquestion; will this system run fine on a 450W PSU (providing I don't overclock it too much) or should I invest in a 550W? Both PSUs in question are Antec Basiq Series, and I have 3GB of DDR2 RAM.
Does your current psu have the 6 pin connection needed to power the 6770? It's stats reccomend a 500w. If you are using a AM2+ motherboard You can get a 3 core or 4 core modern AMD cpu and pop it right in as they are compatable as long as the wattages match up.