Guaranteed compatible upgrades for:

Apple iMac 2005 (Late) PowerPC G5 2.1 GHz 20-inch (iSight) (PowerMac12,1)

Sort by

WD Black 4TB 7200RPM 128MB Cache SATA 6.0Gb/s 3.5" Desktop Internal Hard Drive

Hynix 2GB (1x 2GB) DDR2-800 PC2-6400 1.8V DR x8 240-pin UDIMM RAM Module

NewerTech AdaptaDrive 2.5" to 3.5" Drive Converter Bracket

System Specifications

Maximum Memory:

Expansion:

Standard Memory:

CPU/Chipset:

Bus Architecture:

Mfr's System P/N's:

Upgrade Path:

Virtually any configuration up to 2.5GB can be reached using 512MB, 1GB or 2GB modules.

Comments:

This iMac can be upgraded to a total of 2.5GB (2GB x1 plus the onboard 512MB) of RAM. Choose your ram modules on the left. The only tools you need is a Phillips #1 Screwdriver. Then follow this guide to install the RAM.

This iMac has a 160GB 3.5-inch factory HDD connected to a 1.5 Gb/s SATA port. To upgrade the existing HDD, you’ll need a larger 3.5-inch HDD along with the Essential Electronics Toolkit and a set of Plastic Opening Cards. No additional thermal sensor cable was needed in iMac’s up to the late 2009 models.

To clone your existing OS/app setup first, purchase an external 3.5-inch HDD enclosure or dock and put your new HDD in it, then use the Super Duper app to perform the clone, then switch the drives. The enclosure can also house your old HDD.

Even though this machine has a first generation SATA port, significant I/O and data transfer rate gains can be had by upgrading the factory 3.5-inch HDD to an SSD. For this, you’ll need to purchase any 2.5-inch SSD along with the same Essential Electronics Toolkit and Plastic Cards. Plus, you’ll need to add in the OWC Adaptadrive 3.5-inch to 2.5-inch drive converter.

To clone your existing OS/app setup first, purchase a cloning cable or 2.5-inch HDD/SDD enclosure to connect your new SSD to your mac, then use the Super Duper app to perform the clone, then switch the drives. Your old 3.5-inch HDD can be housed in this enclosure.