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Old Jan 14, 2010, 06:57 PM   #1
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Join Date: Oct 2009
G4 Mdd Ram...

My G4 MDD has 3 X 512 DDR SDRAM PC2100 "U" RAM. I want to max out the ram for the machine. Can I put PC2100 (NOT "U") RAM into it? Will it function properly. Essentially, what is the difference between PC2100"U" RAM and PC2100 NOT "U" RAM? Please advise.

Thank you!
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Old Jan 15, 2010, 06:02 AM   #2
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Join Date: Sep 2007
Location: Northeastern Ohio
Don't know about that "U" but I know what you are talking about and I've had both types in my G4/G5s before.

You can install up to 2gb(4x 512mb), Sorry 4x 1gb won't work as the hardware can't support it but it would have been cool .

You can install faster memory if you can find it at a cheaper price which usually it is and will automatically downclock to 266mhz speeds. PC2700(333mhz) and PC3200(400mhz) should also work fine no problem as long as you buy quality low-density ram.
Browsing the forums from my Powerbook G4
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