I wouldn't try it unless I had to. But it'll do a better job than Vista. I think there's a version of 7 called Windows 7 Home Basic that might be what you need.
No, it can't.
http://www.microsoft.com/windows/windows-7/get/system-requirements.aspx
No patch will overcome a physical lack of ram. The 512mb is the minimum needed to get the software simply to run. Anything lower and it is doubtful the installer will even start. If by some miracle you get Win7 installed with less than 512mb, you won't be able to run any software once the system starts up.
Yes,i have 512mb ram and Ati with 128 mb
NO Actually, you can (I have), but it's not worth it. You can install a hacked tiny version of Windows 7 on a Dell Inspiron 2500. But unless you have 512mb of memory, you won't be able to run a single thing without having to wait an extreme amount of time. Even with 512MB (which is the maximum, if you believe the manual provided by Dell) it won't be pretty.
about 3gb of ram is recommended for windows 7 starter.
512MB of GDDR3 RAM
I suppose that you are talking about memory or aka (RAM).if you have two 512mb sticks of RAM you have one gigabyte of RAM. The more RAM you have the faster your computer will be. So the awnser is RAM or A Gigabyte.
To run windows XP and Mac OSX they recommend a minimum of 128MB of RAM. However for optimal performance they recommend 256MD for windows XP and 512MB for Mac OSX
Windows XP can never "run like Windows 7", regardless of the amount of RAM installed.
The following are requirements for this game: Intel® Pentium® III processor, a speed of 1GHz, Windows 98, Windows 2000, Windows XP, or Windows Vista, and a memory of 512MB RAM.
To run windows 7 you need at least 4gb of ram
I'm not sure I fully understand your question but I will do my best to answer. You have a 3ghz processor with 1GB of ram. 512mb of ram is enough to run windows XP.
Because you NEED more RAM. RAM is cheap these days and you should have at least 512MB RAM for Windows XP and that will greatly improve your speed.