i beat halo combat evolved, halo 2 on original xbox. halo 3 was deacent. but i dont know are you talking about modded or non versions. otherwise good try
i have same cpu and better gpu i can most deffinetly say same games run better on consoles cuz lower res. this style is ancient so oc your cpu and max gpu upgrade you can get is gtx 560 with that set
90% of times it wont overheat with stock cooler. i have a pentium 4 what runs 24/7 atleast 2 years straight now in my work with 78c+ at idle and it still works so dont worry about it, but it dosent hurt adding aftermarket cooler