If your not aware you now are that the reason for all the sudden price changes in current personal computers is because their are a new series of computers on the way which are the 64 bit computers.
What's the difference with current computer 32 bit and 64 bit computer?
Well for now it's not much a big difference because they hardly have any good software's out for 64 bit yet - just that your screen display will be quite smaller than usual when viewing icons. But eventually the personal computers today will look very different later on with software upgrades to 64 bit. For now save your money and wait until everything is finalized and settled.
If you want to jump on the band wagon and get a 64 bit personal computer now, beware. They have hardly any software that support 64 bit applications.
What that means is that you could have a new powerful personal computer with useless applications because the current 32 bit computers are hardly compatible to the new 64 bit PC's. So waiting is an economical choice.
Here are a few links for various support to 64 bit products:
Amd
Also if you have a current windows XP Pro computer and you are upgrading to 64 bit. Good news. Microsoft will let you upgrade your PC to 64 bit. But they're is no upgrade for user with Windows Home edition. Here is their link:
Microsoft 64 bit