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baddj

macrumors 6502
Original poster
Mar 4, 2009
359
43
Okay i have been looking around for ram for my laptop (if i can put it in without killing my warranty)

Any who's so far the only shops i can find in my city only have ddr3 1333 will it work in the macbook with out any issues?
 
Make sure that it is the same number of pins / SODIMM form factor. It should work, but the speed the RAM is being run at is determined by the motherboard, not the stick of RAM itself. So even if you put in RAM that is rated for a higher speed, it will still run at the default.
 
Okay one say it does not and one say it mite were can i find solid info on this as i want to be 100% sure before i buy.
 
Okay one say it does not and one say if it does, it'll run at the same speed as the cheaper 1066 were can i find solid info on this as i want to be 100% sure before i buy.

Get it online, it should be much cheaper and you should be sure to get something that works.
 
Okay one say it does not and one say it mite were can i find solid info on this as i want to be 100% sure before i buy.

Judging from the situation on Intel PCs (and from previous Mac models), if you put higher-clock RAM into a board, the RAM will work, but will run at the slower speed of the board, not at its capable speed.

Since 1333MHz RAM is more expensive, and wouldn't run at full speed anyway, it's unlikely you're going to find any concrete information about this particular scenario, since few people would bother.
 
Judging from the situation on Intel PCs (and from previous Mac models), if you put higher-clock RAM into a board, the RAM will work, but will run at the slower speed of the board, not at its capable speed.

Since 1333MHz RAM is more expensive, and wouldn't run at full speed anyway, it's unlikely you're going to find any concrete information about this particular scenario, since few people would bother.

That's how it works on any computer. The RAM, regardless of clock speed (when higher than the spec'd bus speed), will run at the bus speed.
 
Make sure that it is the same number of pins / SODIMM form factor. It should work, but the speed the RAM is being run at is determined by the motherboard, not the stick of RAM itself. So even if you put in RAM that is rated for a higher speed, it will still run at the default.

Judging from the situation on Intel PCs (and from previous Mac models), if you put higher-clock RAM into a board, the RAM will work, but will run at the slower speed of the board, not at its capable speed.

Since 1333MHz RAM is more expensive, and wouldn't run at full speed anyway, it's unlikely you're going to find any concrete information about this particular scenario, since few people would bother.

That's how it works on any computer. The RAM, regardless of clock speed (when higher than the spec'd bus speed), will run at the bus speed.

I can't imagine it could possibly be any different than what these guys have said.

Save your money and get the 1067mhz DDR3.
 
Okay one say it does not and one say it mite were can i find solid info on this as i want to be 100% sure before i buy.

If one says it definitely doesnt, and another says it might, I'd go ahead and assume you should just go buy the right type of memory.
 
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