Date: Sun, 9 Nov 1997 19:00:22 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: nate@mt.sri.com (Nate Williams) Cc: chuckr@Glue.umd.edu, toor@dyson.iquest.net, nate@mt.sri.com, gpalmer@freebsd.org, freebsd-smp@freebsd.org Subject: Re: Best processor? Message-ID: <199711100000.TAA27531@dyson.iquest.net> In-Reply-To: <199711092342.QAA06582@rocky.mt.sri.com> from Nate Williams at "Nov 9, 97 04:42:01 pm"
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Nate Williams said: > Chuck Robey writes: > > > I can't remember where I read it (because I read a protected mode list > > also, and game producers comment on this a lot) but I'd read where the MMX > > instructions are not proving to be any real help there. > > I could see this easily. Many 'high-end' programs are attempting to > take advantage of the FPU for some of the work, and MMX makes using the > FPU too expensive, so they trade-off MMX instructions for FPU > instructions, so in the end it's a wash. > Some of the MMX clones appear to have very fast MMX/FPU switching. I wonder what difference that means. -- John dyson@freebsd.org jdyson@nc.com
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