Differences Between VA5 Game Gear Boards

As I've never seen this posted anywhere, I wanted to put it online.

I have had a few different VA5 Game Gear boards pass by me but today I noticed an odd difference. On one C44 is missing a capacitor, and this is what I've seen in all VA5 boards.
But now this new one I got has a 473 smd resistor in its place. C41 also has a lower rated cap than usual as well.

Going through the rest of the board the chips used are also of different manufacturers, which I don't find as strange.

If anyone has an idea as to why the difference let me know!

Link: http://imgur.com/a/0y52D