>menus will pop up faster.
Yes. I can confirm it, when moving from a laptop to a desktop, that many things were faster. Application switches went from one or two seconds for a switch to nearly instant. Menus DID pop up faster. With the laptop, it seemed like there was always a little delay or latency added into everything I did.
>I have 512mb of RAM.
That isn't terribly much, yet for web browsing, it should suffice.
Do want you want. Portables have slower drives for a purpose.
512 MB of RAM is what I'd consider the optimal amount for OS X for anything short of professional-type work. I have had 640 MB in all the OS X Macs I've used, and it hasn't been a problem. Looking at MenuMeters now, I have 287 MB free and I'm using 353 MB. I rarely see it go below 200 MB free, so 512 MB should be fine for just about anyone (although having a GB is kinda cool).
Also, the main reason laptops have slow drives is until now, fast drives have been too difficult, expensive, power hungry, and they generate too much heat to be practical. A year ago I think you could get a 40 GB 5400 RPM laptop drive, and that was the best one. Now you can get an 80 GB 5400 RPM one, or a 60 GB 7200 RPM one. They work in laptops now because of the improved technology that allows them to not require much more power or generate much more heat than 4200 RPM drives.
I normally don't like to accuse people of trolling because it seems rude and I always want to give people the benefit of the doubt. But judging by the posts you've made it seems like you might need to just lighten up a bit. No need to get angry at people over the internet, it's not like it'll do anything other than raise your blood pressure anyway.