Is this so that you can run Windows Vista (without getting a windows experience rating of 1.0 - that's me right now),
My Vista experience is 4.2 at the moment...but when I install my new AMD Athlon 64x2 4800 in the next few days, I expect that will rise as my current CPU (AMD Althlon 64 3200) only rates at that....my next lowest score is 4.8, so if my new CPU rates a 5 or just below, I'm hoping to have an overall Vista experience of 4.8. Then again, I could always try overclocking my graphics card to see if I can get a perfect 5.
BTW, unclerob...you don't have to buy a "truckload of bleeding edge equipment" to upgrade your PC. Did mine over 2 years or so, as I could afford it....and yeah, I ended up with quite a few spare parts, but that enabled me to eventually build my wife a machine of her own.
My computing experiences have improved dramatically since them....I don't have her hovering over my shoulder with the ahem's and occasional grunts for me to get off so she can get on.