User-accessible memory...144-pin vs. 200-pin

Hello Ladies and Gents,
I currently have only the factory installed 256 MB of memory. I want to improve my iMac's performance by increasing the amount of RAM. I have checked around the Apple website and boards. The following is an excerpt from Apple Support article 88298 (last updated 2/27/04).
+"This document explains what type and speed RAM is used in iMac (Flat Panel) computers.+
+iMac (Flat Panel) computers only work with PC133 SDRAM. The maximum installed RAM that can be used is 1 GB. RAM modules of 128 MB, 256 MB, and 512 MB sizes can be used in both slots.+
+There are two RAM slots in the iMac (Flat Panel) computers. They are:+
+* A user-accessible 144-pin SO-DIMM slot.+
+* An internal (factory-installed) 168-pin DIMM slot+
+The Apple System Profiler will show the two different types of slots and what amount of RAM is installed there.+
+The user-accessible slot requires PC133 speed RAM. PC100 RAM is not to be used with iMac (Flat Panel) computers and may create performance and reliability issues."+
Unless I've misunderstood, there have been some postings on the board that state otherwise. For example, the article says 1 GB is the max and to use a 144-pin module. However, there have been posts saying the max is 2 GB and that a 200-pin module can be used.
I would appreciate any guidance you might provide.
Thank you!
Shawn

Hello Shawn,
The iMac G4 (USB2.0) 15" 1GHz uses PC2700 RAM. The maximum is 2GB (1GB 200pin SODIMM & 1GB 184pin DIMM). Your current 256MB will be installed in the 184pin DIMM slot. I recommend that you install a 1GB 200pin SODIMM in the user-accesible slot for a 1280MB total. IMHO it's not worth the cost or complexity to go any higher on this older Mac:
RAM Prices
Fitting Instructions.
regards
mrtotes

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User-accessible memory...144-pin vs. 200-pin

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