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-   -   64 bits versus 32 bits Windows (https://www.mersenneforum.org/showthread.php?t=6520)

S485122 2006-10-28 14:32

64 bits versus 32 bits Windows
 
Looking at benchmarks and the forum, am I right when I conclude that 64 bit Windows will only speed up trial factoring ? (And even then mostly for 1 to 63 bits factoring.) In other words would it be interesting to install Windows XP 64 or Windows Server 2003 64 on a machine dedicated to prime95?
I forgot one parameter: with a 64 bits windows you can install more memory, but once again this only favours factoring.

S485122 2006-10-31 18:31

Another thing I am curious about : I saw in some well hidden place that an older version of prime95 (23.xx)was more efficient on PIII platforms than the current version (24,14). Is this still true?

Uncwilly 2006-10-31 19:14

Yeah 23.5 is about the best for the P3's. I have it on my work borgs.


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