On Sun, 24 Oct 2004 03:42:52 -0700 Aaron Lehmann <[EMAIL PROTECTED]> wrote: > On Sat, Oct 23, 2004 at 05:53:25AM +0000, Brian J. Beesley wrote: > > SSE2. This exists in P4 but not in Athlon. The point is that SSE2 allows > > double-precision floating-point operations to be run in parallel; and > > Prime95/mprime makes extensive use of double-precision floating-point > > operations. > > People keep saying that in this thread and it's just not true.
The OP asked about an Athlon XP. The Athlon XP does not have SSE2. > > The Athlon 64 has SSE2 and it doesn't give a big performance boost. > The P4 just has a design that's particularly well suited to > Prime95/mprime. Other people besides you have said this. I've seen mention that the Athlon 64 implementation of SSE2 is slower than the P4 design -- but so far I have __not__ seen an explanation of what the difference is. mikus _______________________________________________ Prime mailing list [EMAIL PROTECTED] http://hogranch.com/mailman/listinfo/prime
