2 RAMs of different speeds?

cdpoxide

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Jan 23, 2011
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Hey guys, I'd like to tap in on your collective wisdom regarding the RAM in my laptop.

I currently have 2GB of DDR3 533MHz speed in, but I was wondering would putting another RAM card of, say 2GB DDR3 1333Mhz in affect the performance of my unit negatively in anyway? Also, how much maximum RAM can I put in?

Thank you very much.

p.s I think my profile'll indicate that I'm new to this forum, so if there're any rules I've broken, I cry your pardon
 
Are you certain that's 533MHz DDR3? Usually 533 means DDR2. You can't use both DDR2 & DDR3 (that blanket statement is true 99.2% of the time).

Have you opened up your laptop to see how many slots you have? I'm assuming you have two slots--one 2GB stick and one empty slot? It's more efficient to use RAM of the same speed, but you don't have to.