"still u r saying nothing about 32bit and 64 bit"
Dude,
The underlying message here is not that arcane - STICK WITH VISTA 32BIT for now.
FYI, If you purchase a full version of Vista - the retail copy, you don't even get to choose which one you prefer which is a bonus since you get both versions on the same DVD & your 32bit key is used to install the 32bit or 64bit version depending on your hardware.
So if you want to "test drive" x64 for a couple of months to have a feel of it before making a totally commitment - you have the luxury of doing that.
Below is a little snippet from a recent x86 vs x64 article.
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For one, Vista x64 presents some device driver challenges. Older 32-bit drivers won't work on this OS, so your hardware will either need to be supported by Vista's built-in set of drivers or the device manufacturer will have to offer 64-bit Vista drivers. Most of the core system components we've recommended already have 64-bit Vista drivers, but if you're carrying over peripherals like printers and scanners, you'll want to look into drivers for them. Also, Vista x64 requires all drivers to be signed. Since bad drivers are frequently the culprit in an unstable system, this requirement makes sense in environments where stability is crucial.
It's not so great, though, if you're the type to run user-customized graphics drivers or the like.
Also, the x64 edition of Vista breaks compatibility with older applications in a couple of ways. Vista x64 can't run 16-bit software, which will matter to those folks who are attached to a really old application for some reason. Also, Thurrott points out that 64-bit versions of Vista lack automatic registry and file redirection, a key element of Vista's backward-compatibility provisions.
As a result, more recent 32-bit and even 64-bit applications written for Windows XP may not run properly under Vista x64.
We're not quite sure where PC enthusiasts will go on this issue. There may be something of a split between the gaming-oriented enthusiasts who pick the 32-bit version of Vista for minimum hassle and the computer propellerheads who go the x64 route for maximum performance and security.
As for us, we're tentatively recommending the x64 version of Vista here, since our system guide is oriented toward those building themselves brand-new PCs. By and large, the newer hardware recommended here ought to have 64-bit drivers ready, and the x64 version's improvements in memory support, security and the like are probably worth the hassle, so long as you can successfully navigate the hardware and app-level incompatibilities.
With a retail version of Vista, nothing should stop you from giving Vista x64 a go and reformatting and installing the 32-bit version if you run into problems.
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http://techreport.com/etc/2007q1/ma...
http://blogs.zdnet.com/Ou/?p=440
"and what about 32 and 64 bit motherboards?"
Virtually all new boards on retail shelves today are 64bit or x64 capable. 32bit or x86 only board are not longer being pushed by almost all hardware vendors.
Hwever, if hearing it from us is the only thing that would put your mind at rest - your Bad Axe 2 board from Intel is x64 capable. Though if you ask me personally about which board to buy for a new 775 based system - I don't think the Bad Axe 2 would be my final choice & this is not because the board is horrible or anything, it's just that considering all other options.....price, features, performance, overclockability....there are better 775 boards out there.