The Apple Power Mac G4 400/450/500Mhz Gigabit uses DDR DIMM PC100 100MHz, PC2700 333MHz, PC133 133MHz 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 DDR DIMM PC100 100MHz, PC2700 333MHz, PC133 133MHz
Base Memory 64MB (Removable) or 128MB (Removable) or 256MB (Removable)
Upgrade Slots 4 Sockets
Maximum Memory 1.5GB using OS 9 2GB using OS 10
Maximum Module Size
CPU & Chipset IBM PowerPC G4 400 MHz IBM PowerPC G4 450 MHz IBM PowerPC G4 500 MHz
Bus Architecture PCI
Manufacturer Part Numbers
  • M7891LL/A
  • M7892LL/A
  • M7893LL/A
Part Number 32.1C3
333MHz 184pin CL3
In Stock
$6.99
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Part Number 32.2C3
333MHz 184pin CL3
In Stock
$6.99
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Part Number 32.5C3
333MHz 184pin CL3
In Stock
$7.99
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Part Number 32.1C3H
333MHz 184pin CL3
In Stock
$9.99
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Part Number 32.2C3H
333MHz 184pin CL3
In Stock
$9.99
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Part Number 32.5C3H
333MHz 184pin CL3
In Stock
$12.99
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Part Number 21.1C3
100MHz 168pin CL3
In Stock
$15.99
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Part Number 22.5C3
133MHz 168pin CL3
In Stock
$15.99
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Part Number 21.2C3
100MHz 168pin CL3
In Stock
$18.99
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Part Number 21.5C3
100MHz 168pin CL3
In Stock
$20.99
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Part Number 21.1C3H
100MHz 168pin CL3
In Stock
$24.99
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Part Number 22.5C3H
133MHz 168pin CL3
In Stock
$24.99
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Part Number 21.2C3H
100MHz 168pin CL3
In Stock
$29.99
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Part Number 21.5C3H
100MHz 168pin CL3
In Stock
$32.99
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Part Number 32/64mC3
333MHz 184pin CL3
Call to Order
$91.99
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Part Number 32/64mC3H
333MHz 184pin CL3
Call to Order
$147.99
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Part Number 32.5C3
333MHz 184pin CL3
In Stock
$7.99
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Part Number 32.5C3H
333MHz 184pin CL3
In Stock
$12.99
View Product
Part Number 22.5C3
133MHz 168pin CL3
In Stock
$15.99
View Product
Part Number 21.5C3
100MHz 168pin CL3
In Stock
$20.99
View Product
Part Number 22.5C3H
133MHz 168pin CL3
In Stock
$24.99
View Product
Part Number 21.5C3H
100MHz 168pin CL3
In Stock
$32.99
View Product
Part Number 32.2C3
333MHz 184pin CL3
In Stock
$6.99
View Product
Part Number 32.2C3H
333MHz 184pin CL3
In Stock
$9.99
View Product
Part Number 21.2C3
100MHz 168pin CL3
In Stock
$18.99
View Product
Part Number 21.2C3H
100MHz 168pin CL3
In Stock
$29.99
View Product
Part Number 32.1C3
333MHz 184pin CL3
In Stock
$6.99
View Product
Part Number 32.1C3H
333MHz 184pin CL3
In Stock
$9.99
View Product
Part Number 21.1C3
100MHz 168pin CL3
In Stock
$15.99
View Product
Part Number 21.1C3H
100MHz 168pin CL3
In Stock
$24.99
View Product
Part Number 32/64mC3
333MHz 184pin CL3
Call to Order
$91.99
View Product
Part Number 32/64mC3H
333MHz 184pin CL3
Call to Order
$147.99
View Product

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-G4/64 64MB Module Kingston
KTA-G4/128 128MB SDRAM PC100 100MHz DIMM Kingston 21.1C3
KTA-G4/256 256MB DDR PC2700 333MHz DIMM Kingston 32.2C3
KTA-G4/256-G 256MB SDRAM PC100 100MHz DIMM Kingston 21.2C3
KTA-G4/512 512MB SDRAM PC133 133MHz DIMM Kingston 22.5C3
KTA-G4/512-G 512MB SDRAM PC100 100MHz DIMM Kingston 21.5C3