What is the difference between a Windows 7 32-bit system and a 64-bit system?

Choose thebitWindows7system is because the memory is greater than or equal to4GBof the. In the -bitWindows7, the memory may be shown to be used3.XXG, the addressable memory space is -bitWindows7and thebitWindows7the most remarkable characteristic. -bit ofCPU (accurate to say is run in -bit mode ofCPU)can only address the largest4GBof memory, subject to this, --bit OS can only recognize the largest4GBmemory, because in the system, in addition to memory, there are many storage devices, so the real available memory space is certainly less than4GB, which is shown in the system properties that we see3.xxG. But thebitCPUhas changed a lot, thebitCPUThe maximum addressing space is2of the theSecond Partybytes, the addressable space of the computation has reached an astonishing16TB (treabytes), namely16384GB. Of course, this is just theory, from practical applications,Windows7Each version of the bit is8GB-192GB, where the family General edition can support8GBMemory, home Advanced Edition can support16GBmemory, while thebit ofWindows7Professional, Enterprise, and flagship editions are the most supported192GBmemory. In other words, memory is greater than or equal to4GBcustomers, because of being -bit hardware limitations, so it is not possible to maximize the use of hardware resources, which is necessary to install thebit operating system to maximize resource utilization. It is to be noted that thebit system needs thebitCPUthe support in the installation thebitWindows7Please make sure you have the firstCPUwhether to support thebit, generally speaking, now the purchase of the Notebook'sCPUbasically all support thebit mode. If only this is considered, for memory less than4GBof users, -bitWindows7more suitable for everyone to use, because thethe bit version consumes more system memory resources.

in terms of computational performance: Theoretically, the the performance on the bit platform is much more than - bit platform. Reason in with CPU the data bit width of the universal register, the bit platform is the bit, while - bit platform is - bit, that is to say, the bit platform can run the bit data instruction, processor can be extracted at one time the bit Data ( only two instructions, one extraction 8 bytes of data ) , than - bit ( requires four instructions , One extraction 4 bytes of data ) increased by one times, the theoretical performance will be increased accordingly 1 times. But in the bit Windows7 Run under - bit of application software doesn't make you feel a leap in performance, only the bit of application software to maximize the the advantages of the bit platform. But at present the bit applications are much less than the number of types - bit platform, but more and more software developers are porting their software to the bit platform. From the above we can see that the selection - bit system or the bit system is not determined by a factor, we need to consider a variety of factors, combined with their own applications and hardware of the actual situation, make a choice.