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#11
No you do not have to reformat, it will do that when you install the operating system you can upgrade to pro or ultra 64bit but it will cost you money and you can run any game in a 32 bit system as with a 64 bit I want you to understand the CPU has to match motherboard the performance comes from the GPU video card when playing games also Intel i5 or i7 will not change 32 to a 64 bit you should study more before you buy anything unless you are made of gold