On 13 May 2007, at 03:58, Philip J Robar wrote: > ... > For reference, the knee of the curve for Windows XP when performing > well defined general purpose multitasking application benchmarks is > right around 512 MB. <AOL> My customers are frequently amazed at the difference when I add RAM to their < 512meg PCs. I see a lot of 2 - 4 year-old Dells which were shipped with 256meg or even 128meg from the factory. The GUI latencies of these tends to make them EXTREMELY frustrating to work on - 512meg DIMMs are the best bang-per-buck at the moment and the difference one of these makes is quite astounding. Not only do I notice it but do my customers. I guess that things like FSB speed and processor architecture have improved more in this time period, but processors' cited ghz seems to have increased little between these machines of 2 years ago & the ones I see sold today. Certainly I am sure that none of my customers could notice the difference between a 2-year old PC with 768meg RAM and a brand new one with the same amount of memory (providing fresh installs of XP on each). > I wish I had similar information for Vista, but despite lots of > hand waving about Vista's memory needs I've yet to see any reliable > numbers published. (I'd welcome a pointer if anyone has one.) I'm finding Vista slow with 1gig, but that may be the operations I'm doing on it - mostly copying data from the customer's old PC, installing applications and general configuration. There's a known issue with file-copy operations which cause them to be glacial to quite a silly degree - one could see this could easily be affecting installation of the many files programs copy to the h/d during setup, but also perhaps switching between tasks to furtle in control panel whilst this is going on. > I'd also like to be able to quote similar figures for OS X, but I > don't read Mac related publications regularly anymore, and from > what I remember of them most of what passed for benchmarking left a > lot to be desired. (MacBench leaps to mind.) http://www.kernelthread.com/ or http://osxbook.com/ might be worth a look, if you've got the time & the inclination. Stroller.