Re: Which Ram Card Is better?
Hey dontknow? Try reading the OP's post first before you get all gung-ho about recommending upgrades. Harbinger has a valid point though about the operating system. Just ensure that it is a 64 bit OS before you upgrade the RAM, but that being said, doing any type of heavy lifting on a laptop (photoshop, CAD, etc) without enough RAM is going to be a headache.
For that kind of work, absolutely upgrading to 8GB of RAM will help. As screen resolutions go up, and the need for higher resolution images goes up with it, the more RAM you'll need to be able to run the software efficiently.
But I do worry, the Lenovo T500 was a Core 2 Duo laptop, and those used DDR2, not DDR3. Are you sure the old RAM is DDR3 and not DDR2?