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2 RAMs of different speeds?

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January 23, 2011 11:51:00 PM

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

More about : rams speeds

a c 241 } Memory
January 24, 2011 1:08:26 AM

Without knowing your model we would be speculating on the max ram supported!
The faster ram should down clock to the speed of the slower one.
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January 24, 2011 1:51:37 AM

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.
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a c 241 } Memory
January 24, 2011 2:08:29 AM

He might be seeing 533 in BIOS which is really 1066.
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January 24, 2011 2:24:20 AM

Yeah...I was thinking that, which is why I wanted him to actually open it up, look in the case, read the sticks, and see how many slots he has open.
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