Apple G5 PowerMac Models

Within the G5 PowerMac family there are 2 distinct models that each have their own specific architectures. The Original 1st Generation models that use DDR RAM and the later 2nd Generation machine that use DDR2 RAM. Our exclusive premium certified HyperVelocity modules deliver the highest possible performance you can get for your G5 PowerMac.

  Not 100% Sure which RAM is correct for your model? Go to your "About this Mac" then "Memory" and "More Info", if the speed shown is PC2-4200 then yours is the later "2nd Generation" model, listed on the top of this page. If the speed shown is PC-3200 then you have one of the original "1st Generation" models, listed down further. Please carefully select your specific model in order to choose the correct memory modules.

Whenever applicable, Mac RAM Direct will supply upgraded modules capable of faster speeds than the factory originally supplied. Faster RAM is not unlike Premium gasoline for your vehicle, where even if your auto can use 87 octane Regular, she'll purr like a kitten with the higher octane products. Similar qualities hold true for RAM. Enjoy!

Mac RAM Direct is a Registered Apple Developer

Electrostatic discharge precautions, Please Click Here.

G5 Power Mac
Dual & Quad Core

2.0, 2.3 & 2.5GHz Models

G5 "DUAL CORE & QUAD CORE" PowerMac specs All Single and Twin Processor "Dual Core" Models "2nd Gen G5"
Model ID: PowerMac11,2 For These G5 models: M9590LL/ , M9591LL/A , M9592LL/A plus "Build-to-Order" models... MUST INSTALL IN PAIRS - May use Non-ECC DDR2 or ECC DDR2 (error Correcting) If using ECC, ALL installed RAM MUST be ECC* MAKE CERTAIN YOURS IS A GEN 2 MODEL: Go to your About this Mac then Memory and More Info, speed must display as DDR2-533 or PC2-4200, if it says DDR-400 or PC-3200 then yours is a Gen 1 model... scroll below to the Gen 1 model listings.
processor speed	2.0, 2.3 Dual Core & 2.5GHz Quad Core
built in memory	0
memory type	DDR2-533 (PC2-4200) 240 pin (may be ECC upgraded if preferrred)
memory slots	8
maximum memory	16GB

MRD Premium HyperVelocity DDR2-533 (PC2-4200) modules "NON-ECC"
1GB Kit	2 512MB DIMMs (2x512MB)	$49.67
2GB Kit	2 1GB DIMMs (2x1GB)	$59.67
4GB Kit	4 1GB DIMMs (4x1GB)	$89.67
4GB Kit	2 2GB DIMMs (2x2GB)	$69.67
8GB Kit	4 2GB DIMMs (4x2GB)	$129.67
16GB Kit	8 2GB DIMMs WOW! (8x2GB)	$229.67

SAMSUNG FACTORY ORIGINAL DDR2-533 (PC2-4200) modules For those who wish to only use Apple factory original RAM "NON-ECC"
Apple Original Equipment OEM Modules
2GB Kit	2 1GB SAMSUNG DIMMs (2x1GB)	$79.64
4GB Kit	2 2GB SAMSUNG DIMMs (2x2GB)	$89.64
8GB Kit	4 2GB SAMSUNG DIMMs (4x2GB)	$149.64

ECC "ERROR CORRECTING" HYPERVELOCITY ORIGINAL RAM MODULES DDR2-533 ECC (PC2-4200) modules For those running highly data critical or 24/7 operations or simulations, etc.
Original Equipment ECC Modules
2GB Kit	2 1GB ECC HYPER-V DIMMs	$99.63
4GB Kit	4 1GB ECC HYPER-V DIMMs	$179.63
4GB Kit	2 2GB ECC HYPER-V DIMMs	$109.63
8GB Kit	4 2GB ECC HYPER-V DIMMs	$199.63

Installation instructions for Power Mac here.

Original G5 PowerMac

1.6-2.7GHz Dual Processor

"1st Gen Dual G5"  Dual Processor G5 PowerMac model specs ... NON-"Dual Core" Models
Model ID: PowerMac7,3 , PowerMac9,1 For these G5 models: M9031LL/A , M9032LL/A , M9393LL/A , M9555LL/A , M9454LL/A , M9455LL/A , M9457LL/A , M9454LL/A , M9555LL/A , M9747LL/A , M9748LL/A , M9749LL/A plus Build-to-Order models MUST INSTALL IN PAIRS Pre Dual Core models Go to your About this Mac then Memory and More Info, speed will display as 3200, if 4200 then yours is a Gen 2 model, scroll up to those models.
processor speed	1.6 - 2.7+GHz and faster Duals
built in memory	0
memory type	DDR400 (PC3200)
memory slots	8 slots, (4 slots in 1.6-2.0GHz models)
maximum memory	8GB, (4GB in 1.6-2.0GHz models)

MRD Premium HyperVelocity DDR400 PC3200 modules
1GB Kit	2 512MB DIMMs	$69.93
2GB Kit	4 512MB DIMMs	$109.93
2GB Kit	2 1GB DIMMs	$99.93
4GB Kit	4 1GB DIMMs	$189.93
8GB Kit	8 1GB DIMMs	$359.93

SAMSUNG FACTORY ORIGINAL DDR400 PC3200 Modules For those who wish to only use Apple factory original RAM
Apple Original Equipment OEM Modules
1GB Kit	2 512MB SAMSUNG DIMMs	$89.94
2GB Kit	2 1GB SAMSUNG DIMMs	$119.94
4GB Kit	4 1GB SAMSUNG DIMMs	$229.94

Installation instructions for Power Mac here.

Introductory G5 PowerMac

Single 1.6& 1.8GHz

G5 PowerMac model specs "1st Generation Single G5"
Model ID: PowerMac7,2 For these G5 models: M9020LL/A plus Build-to-Order models \ DDR333 upgrade to DDR400 (PC3200) *MUST INSTALL IN PAIRS* Go to your About this Mac then Memory and More Info, speed will display as 3200, if 4200 then yours is a Gen 2 model, scroll up to those models.
processor speed	1.6 & 1.8GHz
built in memory	0
memory type	DDR333 (PC2700)
memory slots	4
maximum memory	4GB

MRD Premium HyperVelocity DDR400 PC3200 modules
1GB Kit	2 512MB DIMMs	$69.93
2GB Kit	4 512MB DIMMs	$109.93
2GB Kit	2 1GB DIMMs	$99.93
4GB Kit	4 1GB DIMMs	$189.93

SAMSUNG FACTORY ORIGINALS DDR400 PC3200 modules For those who ONLY wish to use Apple factory original RAM
Apple Original Equipment OEM Modules
1GB Kit	2 512MB SAMSUNG DIMMs	$89.94
2GB Kit	2 1GB SAMSUNG DIMMs	$119.94
4GB Kit	4 1GB SAMSUNG DIMMs	$229.94

Installation instructions for Power Mac here.