The Pros and Cons of 64-bit Windows 7
Why 64-Bit Windows Rocks???
In a 32-bit operating system, memory addresses are 32 bits in length, limiting the total number of unique addresses available to around 4 billion—effectively capping the total amount of memory your system can use at one time to 4GB.
With 64 bit addresses, an operating system could theoretically use up to 16.8 million terabytes of RAM. Now, you’re obviously not going to have access to that kind of hardware for quite a while, but it does mean you’re actually going to be able to take advantage of today’s dirt-cheap memory prices.
Why 64-bit Windows Doesn’t Rock So Much???
You need at least 4GB of memory
This one should be obvious: a 64-bit OS won’t help you if you don’t have at least 4GB of memory (It will help a little bit if you have exactly 4GB, as 32-bit Windows actually limits you to using 3.5 GB, for other reasons). Still, if you’re still rocking 2GB of memory (or less) you should really upgrade; it’s dead simple and will barely make a dent in your pocketbook.
32-bit drivers don’t work anymore
Generally, 32-bit applications work in 64-bit Windows, but the same can’t be said for drivers.
Some software breaks in 64-bit Windows
It’s less common than hardware issues, but some programs do break in 64-bit Windows. Particularly, old programs written for pre-XP versions of Windows may not work in 64-bit Windows 7. If you’re still running a 16-bit program for some reason, it definitely won’t work in a 64-bit operating system.
Not all software benefits from 64-bit
Finally, consider that when you upgrade to a 64-bit OS, all your programs won’t magically start taking advantage of the extra memory. A program has to be written and optimized with 64-bit processors in mind, and right now that’s a minority of all programs. If you mostly use your PC for browsing the web, for instance, you probably won’t see much of an increase in speed with 64-bit Windows, because none of the major browsers have official 64-bit versions (for that, blame Flash, which is firmly 32-bit).![]()



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