On 20 Nov 2004 at 16:12, Paul Stenquist wrote: > My point is that it's not extra cost with a Mac. All of the Mac desktop > G5s are 64 bit.
Pity none of the mainstream applications are. In any case it's more a marketing tool than a real life performance issue. For some time most computer systems have had 64bit wide data busses and even though the processors only chomp away at 32bit data they are so much faster than the data busses that it makes little difference. For instance my system has a 64bit wide external memory bus manages a sustained 2.8GB/s across it's memory sub-systems but the speed between the CPU and it's intimate on-board cache RAM it manages 28GB/s. Then you have to consider NV storage speeds which are currently met by essentially magneto- mechanical devices, the fastest of which are many magnetudes slower than the slowest of modern data busses. Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
