There is 2 types of RAM that you can install on your Mac.
(1) Apple Certified RAM
(2) Value RAM
Apple certified RAM are RAMs made specifically for Macs and users will most likely will not have trouble using them. Value RAM on the other hand, is memory commonly used for Windows laptops. However, since that transition of Macs to the Intel platform, many users have no problems using value RAM in their Macs.
The current iMac, Macbook and Macbook Pro use the same RAM. eg. You can use the same stick of RAM in the Macbook and the iMac. When purchasing RAM, make sure the RAM meets the following specifications...
PC2-5300
unbuffered
nonparity
200-pin
667 MHz DDR2 SDRAM
Chapter 2 : Installation of RAM
Macbook RAM Installation
Macbook Pro RAM Installation
Aluminium iMac RAM Installation
White iMac RAM Installation
Use the above links as a guide for RAM installation. Installing RAM is a relatively simple process. If you prefer, you can always bring your Mac to your Mac retailer to help you install the RAM. A small installation fee may be charged.
Chapter 3 : Additional Info
Where to buy RAM
Macsales.com (online store which sells cheap Apple Certified RAM)
Value RAM are easily available. You can find good deals at the Trade Zone.
List of Successful Value RAM Installed on Macs
* Kingston Value RAM
* Corsair Value RAM
* Mushkin Value RAM
Applications to Test RAM
Rember Download
You can use Rember to test if your RAM is working properly. However, Rember is known allow "bad RAM" to be tested as problem free.
Warranty
If you decide to self install RAM yourself, you WILL NOT void the warranty for you Mac. For instance, if your screen craps out on your in the future, you still CAN claim warranty. The only warranty that you will void is the original RAM of the Mac.
The newer Macs are designed so that RAM are user replaceable. However, before you proceed with your RAM upgrade, read your warranty just to be sure
FAQ
QUOTE
Q: How do I know if I have enough RAM?
A: Take a look at your Activity Monitor. The Page Outs should be zero (or minimal). Page Out refers to the task being written to the hard disk (virtual memory) since there is insufficient RAM. High Page Outs would be most certainly accompanied by lags and slow response from your Mac.

A: Take a look at your Activity Monitor. The Page Outs should be zero (or minimal). Page Out refers to the task being written to the hard disk (virtual memory) since there is insufficient RAM. High Page Outs would be most certainly accompanied by lags and slow response from your Mac.

QUOTE
Q: Is it true that I need to use RAM in pairs? (eg. 1GB and 1GB, and not 1GB and 512MB)
A: No, that is not true at all. You can use RAM in whichever pairing you prefer. However, you would benefit from slight faster performance when running in paired/dual channel mode. Most people prefer to run in pairs.
Here are some benchmark results
A: No, that is not true at all. You can use RAM in whichever pairing you prefer. However, you would benefit from slight faster performance when running in paired/dual channel mode. Most people prefer to run in pairs.
Here are some benchmark results
This post has been edited by kwekeugene: Feb 11 2008, 03:51 PM
Apr 21 2007, 06:41 PM, updated 18y ago
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