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Jopling

macrumors 6502
Original poster
Does Windows XP 64 Bit Edition work with the new Mac Pros and if so, will a normal Windows XP Pro serial key work with this version?
 
Why would you want to install Windows XP 64 on your Mac? That is pointless. If you want Windows install Windows. But you won't see any performance increase out of Windows XP 64.

I don't think the XP key will work on XP 64.
 
If you have bought XP 64 then you will have the correct key. Otherwise you appear to be discussing pirating software which is not allowed around here.
 
you used to be able to exchange your license for x64 due to the fact that microsoft kept delaying it and not complying with their agreement with amd, which stated that if you make the processors, we will make a version of windows to support it just like we did with itanium.

that exchange policy has since ended, so no you can not do it any more. However, you can go to pretty much any computer builder store and buy a copy for the same price as professional full.

Although, under x64, you will not see any performance increase unless you are doing database work or playing one of a couple games that actually support native 64-bit code execution (UT2004 and Farcry). In those games, your performance increase will be about 15-20%, however all of your normal 32-bit games will be running in 32-bit to 64-bit conversion emulation, making them usually perform about 20-30% slower than they would under the native 32-bit OS (this is something that microsoft has resolved in the most recent build of vista). In the latest case, 32-bit applications can run up to twice the speed in vista x64 due to the fact that they have a conversion layer that instead of writing zeros to fill in a 64-bit calculation, they take two 32-bit calculations and stack them in the same cycle.

If you want x64 in Windows, you should really look to Vista because it's implementation is really much better than XP x64.
 
Thanks... and No its not pirated Software. You can burn any MS OS without breaking the law. You buy the lisence for that product, not the actual software. I just wanted to know if the lisence was transferable. Looks like I'll be waiting for Vista if I even decide on poisoning my system.
 
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