[Skillful]

Hey guys I have a question.

Do different editions of Windows 7 affect performance?

For Example is Home Premium faster than Ultimate?

[CPAManager]

Well there is one thing.. lets say you have 4GB ram, and you're running on a 32-Bit OS, then you only use 3GB or you're ram.. But if you're on a 64-Bit OS, then you can use all 4GB RAM :)

But i think they've added more options on the Ultimate version.

[R34PR]

Different editions (Home, Pro Ultimate etc.) make a tiny difference but very little.
Different Architectures (32 bit, 64 bit) have much more of an impact.

I recommend 32 Bit unless you want to use more than 3.5 GB of RAM then 64 bit is for you.

But let's be completely honest. These days, processors are WAY ahead of our current Operating Systems. Even the weak ones can handle just about anything concerning everyday needs. Windows 7 will well run on a Pentium processor as long as it has at least 1GB RAM. Unless you need a really fast processor for something specialised like video editing, large programming projects or bloatware (lol.) then you will get a much larger performance hit from buying a high quality hard disk or a solid state.
Just my two cents.

[lolris21]

I only have 1 GB of Ram using 64bit

Really slow my computer is from 2006

[Polymath 1.0]

All things being equal i.e. same bit version, RAM and CPU then performances differences between editions will be due entirely to the number of and types of services that are run in the default configuration of each edition. Ultimate has MORE services running to support features that are needed only by machines in a domain enterprise as well as BitLocker and simultaneous access to multiple languages support. Home Premium Edition does not have these features and hence will not have services running that would be demanding those system resources. For 99.9% of users Home Premium is a better choice and will have less resource demands to service O/S features you don't need or use. Less resource demands by the O/S translates into less bloat and more system resources available for your own program and app needs.

Edit: With only 1 GB of RAM you should NOT be running a 64bit O/S even if your CPU is 64bit capable. A 64bit O/S has a lot more overhead than a 32bit O/S and all 32bit apps and programs are run in a software emulator on a 64bit Windows O/S. On a 32bit Windows O/S 32bit processes are run in hardware, making it faster. You should also not be running Pro or Ultimate.

Take care