I've noticed a lot of game files are about 64 MB. A few, like Pokemon Platinum, are 128 MB, while Pokemon Diamond is 64 MB. Does the game file size mean anything? Can I get a 64 MB version of Platinum? And finally, does the size of the game affect how fast it runs? For example, could I run Pokemon Diamond (64 MB) faster on no$gba 2.6a than I could with Platinum?
The size is the sprites and such used. When a rom is a certain size, it is and you can only trim it! But it saves around 10MB max
I don't believe so. It's really just amount of data. IIRC, Platinum had more information/added areas than Diamond/Pearl, which probably accounts for the larger file size.
filesize has no bearing on speed of execution. And no you can't get a particular game into a smaller cartridge size.
Hmmm...I have 1 GB of ram, and it says I have an Intel(R) Pentium(R) D CPU 3.00GHz processor. Would this make no$gba laggy and slow?
quite possibly, you have less ram than a computer should these days, and although your processor speed is OK, the pentium D is quite old now.