I base my *recommendation* of 4 GB RAM & 4 GB ReadyBoost on my multimedia lappy.
Bear along...
You get a totally different view of things when your rig (case, keyboard, monitor, mouse, etc.) is on your lap, sitting on the 'Family Jewels'!
😀
Before I bought my Toshiba A215 lappy, a friend of mine owned the same identical model, and warned me about it. He suffers from Diabetic Peripheral Neuropathy and had to return it because the palm rests got so hot, he felt like his fingers were on fire!
As a matter of fact,
Toshiba actually warns you about this (scan of my shipping bag).
Underneath the left palm rest is the RAM - under the right palm rest is the HD...
I'm here to tell you - after I 'discovered' ReadyBoost and installed it on my lappy - the right palm rest (HD) is now stone cold, and the left palm rest (RAM) is barely warm - really!
LoL! This is NOT my imagination!
The HD is working less hard with ReadyBoost (once it loads), generating almost no heat, and my battery lasts longer between charges.
4 GB of SODIMM RAM cost me $175 - 4 GB SDHC Flash card cost me $20.
The increase in performance afforded by going from 2 GB RAM -> 4 GB RAM was about the same as going from '0' ReadyBoost -> 4 GB.
While the benefits of going from 2 GB RAM/'0' ReadyBoost -> 4 GB RAM/4 GB ReadyBoost is barely perceptible at times - the benefits ARE there!
I'll leave it to you to judge which was the more cost-effective purchase!
😉