I doubt that you would see any significant improvement over 512 MB. With 1.5 mb of ram, you'll need to upgrade the cpu to see a difference.
I have a nearly two year old Dell Dimension 2400. All the literature pertaining to this model, that I have found, states that it has a capacity of 1GB RAM. The Crucial scanner says that my system has a capacity of 2GB. The Crucial rep. I spoke with tells me that they sell a lot of 1GB sticks for the 2400 and that they guarantee compatibility.
On the other hand, I can't get anyone at Dell who both speaks english well enough to communicate with and knows the product well enough to answer the question.
Does anyone have any experience with the 2400 that can tell me if the model can accommodate 2GB RAM?
And, if I install a total of 1.5GB RAM, have I exceeded the point of diminishing returns? I use several apps simultaneously and the low virtual memory notice pops up too often for my taste.
System is P4 2.4GHz with ~640 MB PC2700 DDR SDRAM currently installed, Win XP SP2 Home.