HT1270 I own a MacBook Pro 13 inch [dec 2009] 4gb ram. I'm upgrading it to 8gb. Can I increase the speed of the ram from 1066 to 1333 Mhz..?.

Question

I own a MacBook Pro 13 inch [dec 2009] 4gb ram. I'm upgrading it to 8gb. Can I increase the speed of the ram from 1066 to 1333 Mhz..?
Which is the best company and is it necessary to buy it from the Apple store.

Answer 1

Let's clear the air here between fact and fiction.
Brand of RAM has little if anything to do with its quality.
A reliable vendor is more important that brand of RAM.
Installing faster rated RAM than required for your computer doesn't result in a faster computer. The RAM still runs at the speed of the system's memory bus.
Installing slower rated RAM than required for your computer will make the computer run slower.
Using faster rated RAM is a tricky business. Sometimes it will work and sometimes it will not work. This may be due to other factors related to your computer's memory bus speed and clock speed as well as other characteristics of the RAM such as CAS Latency (CL.)
The reliable thing to do is use RAM that meets the specifications set for your computer. That information is found in either the user manual or the system specs.