The Apple iMac 233/266/333 uses SDRAM SODIMM PC133 133MHz, PC100 100MHz memory upgrades as listed in the detailed specifications below. All memory and other upgrades compatible with this system are listed on this page.

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Memory Type SDRAM SODIMM PC133 133MHz, PC100 100MHz
Base Memory 2MB (Non-removable) video memory 32MB (Removable) system memory
Upgrade Slots 2 Sockets for system memory 1 Socket for video memory
Maximum Memory 6MB video memory 512MB system memory
Maximum Module Size
CPU & Chipset IBM PowerPC G3 233 MHz IBM PowerPC G3 266 MHz IBM PowerPC G3 333 MHz
Bus Architecture USB
Manufacturer Part Numbers
  • M6709LL/A
Part Number 12.1C3
133MHz 144pin CL3
In Stock
$15.99
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Part Number 11.2C3
100MHz 144pin CL3
In Stock
$24.99
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Part Number 12.1C3H
133MHz 144pin CL3
In Stock
$24.99
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Part Number 11.2C3H
100MHz 144pin CL3
In Stock
$39.99
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Part Number 11.2C3
100MHz 144pin CL3
In Stock
$24.99
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Part Number 11.2C3H
100MHz 144pin CL3
In Stock
$39.99
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Part Number 12.1C3
133MHz 144pin CL3
In Stock
$15.99
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Part Number 12.1C3H
133MHz 144pin CL3
In Stock
$24.99
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Upgrade References

The table below are references to other manufacturer part numbers which are specific to this device, have identical specifications to our components. This information is made available for your reference.
Part# Source References
KTA-IMAC/32 32MB Module Kingston
KTA-IMAC/64 64MB Module Kingston
KTA-IMAC/128 128MB SDRAM PC133 133MHz SODIMM Kingston 12.1C3
KTA-IMAC/256 256MB SDRAM PC100 100MHz SODIMM Kingston 11.2C3
KTA-VG3/2 2MB Video Upgrade Kingston
KTA-VG3/4 4MB Video Upgrade Kingston