iMac 3GB 4GB RAM and Leopard

Hello Cloudyjoe

Have a look at this link: [Understanding Intel Mac RAM|http://guides.macrumors.com/Understanding Intel_MacRAM]

Text statements cut from the article:

+The maximum RAM is different for different logic boards:+

+With 4 GB installed, these machines will report 4 GB in System Profiler, but the operating system will only use 3.3 GB.+

+Any hardware limitations will not be altered by a future OS or firmware update.+

You can only access 3.3GB of the 4GB because of the (logic board) aka hardware!

Dennis

Cloudyjoe, Is your imac white or aluminum. I say this because the white iMacs can only have 3 GB of ram in them while the aluminum ones that were just released aug 7, 2007 have the santa rosa chip that can withstand up to 4 GB of RAM.

He said, that he has a late 06 which would be a white Mac!

[iMac (Late 2006): Memory Specifications|http://docs.info.apple.com/article.html?artnum=304284]

As den.thed said, it will take 4GB but will only use 3.3 GB due to HW limitations.
However, System Profiler and Activity Monitor will correctly report 2 x 2GB.

A matched pair supposedly yields a small performance bump-up, and 4GB was
only a few $$ more than 2GB+1GB -- so I just upgraded my Late_2006 to 4GB.

Last week, Mushkin.com's online store had very competitive prices on 2GB sticks
($70 for their "Value RAM", $80 for "Apple PerfectMatch"), but everyone's prices
change almost daily. Newegg.com offers a very wide selection of brands (usually
at good prices), but sometimes you can do a little better buying directly from the
manufacturer.

... BTW, 4GB is *800 times larger* than my first hard drive,

Looby

{quote}... BTW, 4GB is *800 times larger* than my first hard drive,{quote}

The good old days, I donated my first Mac to the elementry school when I bought my second Mac a $2300 1995 [Performa 6200CD features a 75 MHz PowerPC 603 processor, 8 MB of RAM, and a 1.0 GB hard drive|http://www.everymac.com/systems/apple/mac performa/stats/mac_performa6200cd.html]

Dennis

BTW, 4GB is *800 times larger* than my first hard drive

The good old days, I donated my first Mac to the elementry school when I bought my second Mac a $2300 1995

Uh, yep, that's the good old days -- but I was talkin' about the BAD old days, as in: DEC PDP-8, Data General Nova, HP 2114A.

Of course, the hard drive I was referring to wasn't actually mine, it belonged to my employer. It was an HP 7900A: 4.9 MB @ USD $9975.00 ...that's 1971 dollars ...

... about the price of three new Volvos -- or a noob engineer's annual salary,

Looby

http://www.hpmuseum.net/display_item.php?hw=275

Your welcome, and thanks for the ☆...