Yes. I am currently running x64 Vista OS without problems.
32bit
No. The Pentium M is an older, 32-bit only processor. The Pentium Dual-Core is faster and supports 64-bit operation.
Yes.
Depends on the model, all Pentium 4's running on Northwood are 32 bit, however some of the higher end Prescott and newer chips are 64 bit (Pentium 4 5xx and 6xx series). To find out if your pentium 4 is 64bit search for CPUz on google and that will tell you everything you need to know about your CPU
Itanium, amd athlon,athlon,pentium
Itanium
MCA
its 64 bit
Yes. The mobile versions of the Pentium Dual-Core, and Core2 Duo support 64-bit operating systems.
Intel offers Pentium Pro, Pentium II, Celeron, Pentium II Xeon, Pentium III, Pentium II and III Xeon, Celeron with Pentium III Based, Pentium 4, Pentium M, Intel Core, Dual Core Xeon LV, Intel Pentium Dual Core, Intel Core 2. Pentium Duo, Pentium Dual Core, Core 2 Quad, Intel Pentuim 2 Dual Core PrAMD processors include AMD Athlon, AMD Athlon 64, AMD Athlon X2, AMD Athlon Xp, AMD Duron, AMD Sempron, AMD Turion, MD Opteron and AMD Phenom 1.
A Pentium 4 is really limited in it's ability to run PCSX2 at a decent speed. The reason is that the Pentium 4 is a single-cored processor. If your processor supports it, make sure Hyperthreading is enabled. If your Pentium 4 support EM64T (64-bit), try running a 64-bit operating system as well.
Yes, as long as you have a 64-bit capable processor. A Core 2 Duo, Pentium 4 (Cedar Mill Core), or a Pentium Dual-Core would be capable. An Intel Core Duo is 32-bit only.