Apple 20” iMac (Early 2008); iMac8,1 Installation Guides and Specifications

Upgrading the Apple 20” iMac (Early 2008) RAM is very easy. Other upgrades or repair like the Hard Drive or the Optical Drive are a bit more advanced but still manageable. All You'll need is some simple tools, and the correct parts. We then urge you to follow the videos or the Apple manual provided on the links below.

Please see our Apple RAM Memory for Macbook Pro page to locate your  Apple compatible RAM upgrade for your Mac, and we'll ship it fast from our warehouse in Victoria.

Please see our Hard Drive  for iMac 21.5" (Late 2009) page to locate your    Apple compatible Hard Drive upgrades for your iMac

Apple User Guides for the Apple iMac 21.5" (Early 2008)

iMac: How to remove or install memory Learn how to remove or install memory in your iMac computer on the Apple support page.

OWC Video Installation Guide for Apple 20” iMac (Early 2008):

Memory Install Video

OWC's step-by-step video of how to install memory in the Apple iMac 24" & 20" (Mid 2007 / Early 2008 / Early 2009).

Duration: 5:08 | Model ID: iMac7,1; iMac8,1 & iMac9,1 

Recommended Tools for the RAM upgrade:

#2 Philips Screwdriver

Here is how to fix or upgrade the main Hard Drive:

NewerTech AdaptaDrive - Drive Install Video

OWC's step-by-step video of how to install a drive in a NewerTech AdaptaDrive. 

Use the Hard Drive Install Video below for iMac 21.5" (Late 2009) to install aNewerTech AdaptaDrive mounted drive: 

Hard Drive Install Video

OWC's step-by-step video of how to install a hard drive in an Apple iMac 20" (Mid 2007 / Early 2008).
OWC Skill Level: "Involved" |  Duration: 9:58 |  Model ID: iMac7,1 & iMac8,1

Recommended Tools for the HDD/SSD upgrade: aaa

Heavy-duty Suction Cups
Newer Technology 14 Piece Tool Set
- 2.5" to 3.5" adapter - for SSD installation only >- 
- External Hard Drive Enclosure - Convert your existing drive into an external one

Here is some detailed specifications as well as direct link to available upgrades:

Apple 20” iMac (Early 2008)
Introduced April 2008
Discontinued March 2009
Model Identifier iMac8,1
Model Number A1224
EMC 2210
Order Number MB323LL/A (2.4 GHz), MB324LL/A (2.66 GHz)
Processor Intel Core 2 Duo (E8135, E8335) ("Penryn")
Processor Speed 2.4 or 2.66 GHz
Architecture 64-bit
Number of Cores 2
Cache 6 MB shared L2 cache at full processor speed
System Bus 1066 MHz
Standard Storage 250 (2.4 GHz only), 320, 500, 750 GB 7200-rpm
Link to upgrade tool & kits
Link to internal HDD Upgrade to a new 3.5” HDD
Link to internal SSD Upgrade to a new 2.5” SSD
Media Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Link to external optical drive Get an external burner here
Peripherals Apple Remote, Apple Keyboard with Numeric Keypad, Mighty Mouse
Built-in Memory
Maximum Memory 6.0 GB (Actual) 4.0 GB (Apple)
Memory Slots 2 - 200-pin PC2-6400 (800MHz) DDR2 SO-DIMM
Interleaving Support Yes
Link to RAM upgrade Upgrade your RAM here
Built-in Display 20-inch (viewable) glossy widescreen TFT LCD
Resolutions 16:10 aspect ratio: 1680 x 1050
Graphics Card ATI Radeon HD 2400 XT or ATI Radeon HD 2600 PRO
Graphics Memory 128 MB (2400 XT) or 256 MB (2600 PRO) GDDR3
Display Connection 1 - Mini-DVI (DVI, VGA, Composite and S-video with adapter)
Display Modes Dual display extended and video mirroring
External Resolution Up to 1920 by 1200 pixels (Digital) Up to 2048 by 1536 pixels (Analog)
Camera Built-in iSight
Wi-Fi Built-in AirPort Extreme card (802.11a/b/g/n)
Bluetooth Built-in Bluetooth 2.1 + EDR
Ethernet 10/100/1000BASE-T (RJ-45)
USB 3 - 480 MBit/s
FireWire 1 - 400 MBit/s, 1 - 800 MBit/s (7W each)
Display 1 - Mini-DVI (DVI, VGA, Composite and S-video with adapter)
Infrared 1 - For Apple Remote only
Audio In 1 - 3.5-mm analog/optical combo input jack, Built-in microphone
Audio Out 1 - 3.5-mm analog/optical combo output jack, Built-in speakers
Hard Drive Interface 3.0 Gbps Serial ATA (SATA)
Optical Drive Interface Ultra ATA/100 (operates at UATA/33 or UATA/66)

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