Well, since many fanboys (they now who they are) still believes that Intel is better than AMD in 64-bit ( :lol: :lol: :lol: ), I'll give hard evidence that will burst all their bubbles.
1) http://www.extremetech.com/article2/0,1697,1860533,00.asp
2) http://www.anandtech.com/IT/showdoc.html?i=1982&p=1
3) http://www.lostcircuits.com/cpu/p4-600-64/
4) http://www.tomshardware.com/2005/08/23/windows_xp_x64/
5) http://www.gamepc.com/labs/view_content.asp?id=noconaopteron&page=5
This link from Anand's site clearly shows that AMD will plan on extending the AMD64 instruction set and also plans to include FPU extensions to it. As I stated before, Intel will have a hard time matching that since EMT64 lacks the extra registers AMD64 has from day-1.
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2565
1) http://www.extremetech.com/article2/0,1697,1860533,00.asp
In the end, AMD's implementation of x86-64 seems to be more robust than Intel's, although the results are definitely mixed. We'll need to revisit the issue as more real 64-bit applications become available. But for now, if you want to move to 64-bit Windows on dual-core processors, AMD may be the better overall solution.
2) http://www.anandtech.com/IT/showdoc.html?i=1982&p=1
3) http://www.lostcircuits.com/cpu/p4-600-64/
One thing that emerged somehow between the lines of the benchmarks is that the Athlon64 appears to be able to get more mileage out of 64-bit computing than the P4. That does not mean that the P4 fares poorly, on the contrary, a number of disciplines were taken with bravado by Intel's latest and greatest. On the other hand, the "clamshell" pattern of the Athlon64, coming in last in 32-bit and literally stepping all over the P4 in 64-bit mode shows a little bit of the difference between a processor architecture specifically developed for 64-bit computing as opposed to one that was patched to accomodate the latest developements in personal computing. Again, the P4 performs anything but poorly but we don't see that huge performance jump between 32-bit and 64-bit environments.
4) http://www.tomshardware.com/2005/08/23/windows_xp_x64/
5) http://www.gamepc.com/labs/view_content.asp?id=noconaopteron&page=5
This link from Anand's site clearly shows that AMD will plan on extending the AMD64 instruction set and also plans to include FPU extensions to it. As I stated before, Intel will have a hard time matching that since EMT64 lacks the extra registers AMD64 has from day-1.
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2565