How is TeknoMW3? Is it the same as 4d1? I don't think my PC can handle BO.
TeknoMW3 is more stable while connecting to online services, and usually it doesn't crash. With IW5M, it crashed a lot after connecting to online services, StackHash errors or so, but it had an Anti-Cheat, though there are working aimbots/wallhacks for it.
Also, about BO: if you want to know if you can run BO, then check out the minimum requirements.