A:AnswerIt should work fine. The important thing is to be at the speed and clock cycles or higher. If it doesn't work, return it. If you can, power up the laptop before putting on the rear cover. Make sure to read the HP service manual first.
A:AnswerYes, I just bought the G5 MD, and I didn't even try using it with 8 gigs of RAM, I bought this alongside it and made sure to install this before even booting it up!