What is the diffrence between win7 32 bi and 64 bit

howardp6

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32 bit applications run a little slower with Windows 7 64bit. Older devices like printers and scanners may not have 64 bit drivers, which meant they may not work on Windows 64 bit. Programs that need more memory like Photoshop function better when using the 64 bit version, if you have more memory. Looking ahead, if you have Windows 7 64 bit, the migration path to Windows 8 may be easier, if there is no 32 bit version.
 
windows 7 home premium is actually limited to 16gb, pro and ultimate 192gb

32 bit applications do not run slower they get access to plenty more memory each

in this day and age, forget 32 bit its dead finished over, has been for years

windows 8 is still coming with 32 bit versions



the actual difference? apart from the 32 bit ~4gb max limit, there's no difference on the surface although 64 bit needs 64 bit drivers (everything has 64 bit drivers these days), and you cant run 16-bit apps on 64 bit systems (32 bit was on the market ~1989 - 16 bit is ancient)
 


doing the math......32 bits :0

1. RAM - With a 32-bit operating system, there's the 4 GB of system RAM. Even if you install additional RAM, it will go to waste as the 32-bit operating system will not be able to access it. With a 64-bit OS, there's support memory far in excess of 4 GB. There are 64-bit versions of the Windows that can handle 192 GB of RAM, tho Home is limited to 16 if memory serves (pun intended). The actual

2. Security - All device drivers for 64-bit versions of Windows must be digitally signed. Attempt to install incompatible or unsigned device drivers will fail. This feature meansl 64-bit operating systems have better security than their 32-bit counterparts. 64 bit systems also provide kernel patch protection DEP protocols and other goodies to keep your system safe.

3. Performance - The bits refer to how big the chunks of data being transferred are. A 64 bit system can lift data off storage devices 64 bits at a time. In 32 bit systems, only half as much can be sent at one time. Having a 64 bit OS doesn’t automatically make all applications faster because much of today’s software is written and optimized for a 32 bit era. You’ll need software specifically optimised for 64 bit processing to take advantage of any speed improvements. If ya just went grocery shopping and have 12 bags in the car, you'll generally get them inside faster carrying 2 bags at a time.....maybe not twice as fast, but faster.

4. Compatibility - Running newer 64 bit programs will run faster on a 64 bit windows system than in compatibility mode on a 32 bit system.













 

howardp6

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This is from the Microsoft website:

Pros and Cons of a 64 bit system:
You can address much more than 4GB of memory, which is ideal for avid gamers, CAD, video editors and heavy multi-taskers. However, any 32 bit software you use will still be restricted to 4GB memory – you need a 64 bit CPU, OS and applications to take full advantage of the extra RAM.
16 bit applications will no longer run. Although this is unlikely to be a problem, if you use very old software (from the Windows 3.1 days!) then it will not work under a 64 bit OS.
Existing 32 bit drivers no longer work.If you have older or poorly supported hardware you may find that it can no longer be used. Got a 7 year old scanner that just about works in Vista? You may not be able to get it working in 64 bit Windows 7.
Unsigned kernel-mode drivers no longer work. Along with the issue above, the inability to run unsigned kernel mode drivers will cause problems for old hardware. (There is reportedly a way to bypass this check).
Running some 32 bit applications on a 64 bit OS could actually be slower. The additional overheads in running 32 bit software in 64 bit mode could cause a slight degradation in performance. It will take some time for 64 bit software to become the norm.