Does the GP2x work with 4Gb SD cards? I would do a search but these forums don't allow you to a search on words of 3 letters, i.e. "4Gb".

Yes it does, you can check the wiki to be sure http://wiki.gp2x.org/wiki/SD_card_compatibility

Only non-SDHC 4GB cards, and even some of those don't work due to them breaking the specifications.

Easiest way is to use the SDHC patch and use those cards.

BTW, You can do a search on words of 3 letters via Google, eg:

http://www.google.co.uk/search?hl=en&q...earch&meta=

tridion--
I've got the OCZ 4GB one and it works great:

http://www.newegg.com/product/product.asp?...N82E16820227157

Couple-of-years-old PQI works like a charm.

And, I found out you DON'T have to turn off the system to take the card in and out!! (while at the main menu).