We're excited to announce that we've fully migrated the Xbox Forums to their new home, here on the Microsoft Community forums!
As of today, going to forums.xbox.com will redirect you here to the Xbox area of the Community forums. We've moved all of your existing threads over so you can continue and start conversations with the new forums experience.
We sincerely appreciate the feedback you have provided over this transition and can't wait for you to check out the new Xbox Forums!
Depends on the speed class, if the game uses a buffer partition on the HDD, and if the DVD Rom could read the game data faster than the SD card over USB2.0. Seems like something you would need to try to find out.
It works. The speed is determined by the class of the card. I have a class 4 or class 6 card I've used with a small card reader and it was slooooow compared to HDD or even my normal 32GB USB flash drive.