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Apple Desktops Discussion of Apple's desktop machines including Mac Pro, iMac, Power Mac, and mini

iMac - iMac Intel Core Duo - Memory Upgrade?


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Gav

 
Member Since: Dec 24, 2006
Posts: 118
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The specs for the computer I am getting are:

APPLE IMAC 20"
- 2.0GHz Intel Core Duo Processor
- 512MB DDR RAM
- 250GB Hard Disk Drive
- DVD RW 8x Superdrive
- 128MB GDDR3 Graphics
- 5 USB connections
- 2 Firewire Sockets
- Built-in Speakers
- Mac OS X v10.4 "Tiger" Operating System

I have worked out that this means I have the "20-inch iMac (Early 2006)".

Looking at the Apple support site, this means that the 512MB is made up of ONE stick. See - here

I am looking to upgrade this to 1gb when I get it, should this be a case of just putting an extra 512mb in and would THIS memory be compatible?

http://www.ebuyer.com/UK/product/111437

Many thanks, Gavin.
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Seraphic

 
Member Since: Oct 10, 2006
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Mac Specs: 20in C2D iMac, base model. 30gb Video iPod.

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Yup, should be ok if indeed the mac has a single 512mb stick to start.
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imacmatt09

 
Member Since: Nov 29, 2006
Location: Pittsburgh, PA
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Mac Specs: iMac Core Duo 17'' 1.83 ghz 512 mb ram

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Quote:
Originally Posted by Seraphic View Post
Yup, should be ok if indeed the mac has a single 512mb stick to start.
no it doesnt. it has two 256 mb sticks to start.
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imacmatt09

 
Member Since: Nov 29, 2006
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Quote:
from apple

The iMac (Mid 2006) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots.
there you go
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Seraphic

 
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His is early 2006, take a look here:
http://www.everymac.com/systems/appl...cd_2.0_20.html

That says its a single stick. Do you have a link to Apple's site where it says the UK iMac's built early 2006 have 2x256mb? (which I would have thought indeed they would have, but a few sites seem to claim they don't).
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imacmatt09

 
Member Since: Nov 29, 2006
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Mac Specs: iMac Core Duo 17'' 1.83 ghz 512 mb ram

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i have an early 2006 and it is two 256 sticks. for a dual core proccesser you have to have both slots filled. oh and i would trust the apple website before everymac. sorry if i sound rude but thats the truth.
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Seraphic

 
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No, I wasn't disputing the facts (and I know you aren't being rude, as I am not), like I said, I'd have thought that it would have come with 2x256 sticks. It isn't however true that you MUST have two sticks to use a dual core processor. The reason for the two identical sticks is for dual channel ram purposes (which I'm not sure the iMac does support anyway, although I may be wrong) but its not a prerequisite of a dual core processor.

I would also trust the Apple website, thats why I asked for a link
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Jem

 
Member Since: Aug 16, 2006
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Sorry iMacmatt but as Seraphic says, that's simply not true on the dual stick issue. I have a 20" dual core, early '06 model. It came with 1 x 512MB stick. I took that out and replaced with 2 x 1GB sticks.

So you do not have to have both slots filled. There are performance benefits if you manage to obtain 2 identical sticks but I have read that this is not simply dependent on 2 sticks of the same size, but also they need to be perfectly matched timing-wise or they still wont be used optimally. I have no idea how to test if they are being used in dual channel mode or not - anyone got any links to testing apps?

Gav - it's probably best just to wait until it arrives and then take a peek inside. I bought RAM direct from Omni Technologies in the States and, even with FedEx sticking on excessive fees to collect import duty I still bagged a bargain although the ebuyer prices look much better than I remember them 6 months ago!
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Gav

 
Member Since: Dec 24, 2006
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Wow, a lot of heating debate here!

As it says on the Apple website, all Early 2006 models (with 512MB) left with 1 stick, I now have the product, and yes - it does only have one stick.

Many thanks

I'm really chuffed though - I got the iMac for £490 ($950USD)

Quote:
Originally Posted by imacmatt09 View Post
there you go
I have the Early 2006 model, not the Mid.
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Jem

 
Member Since: Aug 16, 2006
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Nice one mate, that sounds a great price to me for a nice piece of kit. You should be well pleased.

When I upgraded, I received a faulty 1GB module (+ a working one) and while the faulty one was being replaced I ran with 1 x 1GB and I must say the performance increase I got going from 1 x 512MB was a lot more noticeable than I got going from 1GB to 2GB. If you're not planning on running many intensive applications simultaneously then you may find a 1 x 512MB upgrade is more than enough. If, at a later date, you find you still want more then eBay the 512MB modules - they fetch decent money there.
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