Apple iMac “PowerPC G5″ 1.6 GHz 17” 2004 Specs

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iMac – M9248LL/A – PowerMac8,1 – A1058

About this iMac

In the models released in the 2004 and 2005 period, there were a number of modifications that set The Apple iMac brand apart. The highlights of this model include the vertically mounted 8X Combo Drive that supports DVD-ROM and CD-RW usage. It’s built in speakers were located at the bottom with the commensurate effect of bouncing the sound off the desk that the computer sits on. The device featured 256 MB of RAM as well as a NVIDIA GeForce FX 5200 Ultra graphics card.

1.6 GHz PowerPC G5

256 MB

80 GBHard Drive

Plugged-in

Storage

The device was built with 80.0 GB Serial ATA (1.5 Gb/s) hard drive storage with a disk speed of 7200 RPM.

Screen Size and Resolution

The iMac featured a 17 inch screen with a TFT active matrix LCD display and a native resolution of 1440×900.

Processor& Graphics Processing Unit (GPU)

The iMac had Mac OS X 10.3.5 (7P35) pre-installed on it. The processor that powered the computer was the 1.6 GHz PowerPC 970 (G5) processor. Its graphics processor was the NVIDIA GeForce FX 5200 Ultra graphics with 64 MB of DDR SDRAM (AGP 8X).

Memory & Architecture

The device was built with 512k on-chip level 2 cache with 256 MB of 400 MHz PC3200 DDR SDRAM for its RAM. This was centered on a 64-bit architecture.

Upgradability

Although the iMac came with 256 MB of RAM it could be upgraded up to 2 GB of RAM.

The Operating System of the iMac can also be upgraded from its pre-installed Mac OS X 10.3.5 (7P35) up to MacOS X 10.5.8.

This iMac had the following dimensions (43 cm, 42.6 cm, 17.3 cm) as well as a weight of 18.5 lbs (8.4 kg).

Inclusive Features

The iMac includes the following features and ports:

A Power Adapter (100V-240V AC, 180 W maximum)
Optional AirPort Extreme (802.11g).
Optional Bluetooth 1.1
Two FireWire 400 ports
1 Mini-VGA port that supported Mirroring
Built-in Stereo Speakers.

Introduced:August 31, 2004		Discontinued:May 3, 2005
Screen Size and Resolution		Memory
Screen Size	17 inches TFT	Level 1 Cache	32k/64k
Resolution	1440×900	Level 2/Level 3 Cache	512k (on-chip)
Processor		RAM Type	PC2-3200 DDR
Processors	1	Min. RAM Speed	400 MHz
Architecture	64-Bit	Standard RAM	256 MB
Speed	1.6 GHz	Maximum RAM	2 GB
Type	PowerPC 970 (G5)	RAM Slots	2
Processor Upgrade	Soldered	Motherboard RAM	None
FPU	Integrated	Graphics
System Bus Speed	533 MHz (3:1)	Video Card	GeForce FX 5200 Ultra
Cache Bus Speed	1.6 GHz (Built-in)	VRAM Type	DDR SDRAM
ROM/Firmware	Open Firmware	Standard VRAM	64 MB
EFI Architecture	N/A	Maximum VRAM	64 MB
Storage		Inclusive Features and Ports
Standard Storage	80 GB HDD	Standard Optical Drive	8X “Combo Drive”
Storage Speed	7200 RPM	Standard Ethernet	10/100Base-T
Storage Dimensions	3.5” (26.10 mm)	Standard Modem	56k v.92
Storage Interface	Serial ATA (1.5Gb/s)	Standard Air Port	802.11b/g (Optional)
Battery		Standard Bluetooth	1.1 EDR
Type	3.6V Lithium	USB Port 2.0	3
Battery Life	N/A	FireWire (400)	2
Description		Keyboard	Apple Keyboard
Case Type	All-in-One	Inclusive Input	Apple Mouse
Form Factor	iMac G5 iSight	S-Video Output	1
Apple Order No	M9248LL/A	Microphone	1 (Built-in)
Apple Subfamily	iMac G5	Headphone	1
Apple Model Number	A1058 (EMC 1989)	Sound Out	1
Model ID	PowerMac 8.1	Power Adapter	1

Identifier reference: M9248LL/A, A1058, EMC 1989. Use these together because one Apple identifier can sometimes cover multiple configurations.

Last reviewed by Techable: August 19, 2025Identifiers checked: order number, A-number, EMC, and model identifier when available.

Model summary

This iMac at a glance

Family: iMac
Order Number: M9248LL/A
Model Number: A1058
EMC: 1989
Year: 2022

Use the order number, A-number, EMC, and model identifier together when comparing, buying, or selling this device.

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Search by A-number, EMC, order number, or model identifier.

Next steps

Use the spec table to confirm the exact device, then choose the right lookup, buy, or sell path.

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Common questions

Is M9248LL/A the same as A1058?

Not exactly. M9248LL/A usually points to a specific retail configuration, while A1058 identifies the broader Apple hardware family. Always check the EMC and model identifier too.

What iMac is model A1058?

A1058 is the Apple A-number shown for this iMac family. Use the order number, EMC, and model identifier on this page to narrow the exact configuration.

What does EMC 1989 mean?

The EMC number is another Apple hardware identifier. It helps separate closely related models that may share a similar name, year, or A-number.

Can the RAM or SSD be upgraded?

Check the spec table for the exact configuration. Many newer Apple Silicon Macs have memory and storage integrated into the board, so RAM and SSD upgrades are often not practical after purchase.

What macOS versions work with this model?

Use the model identifier, release year, and processor family from the spec table when checking macOS compatibility. Compatibility can change as Apple releases new macOS versions.

Is this iMac still worth buying used?

It can be, depending on price, battery health, memory, storage, and condition. Compare this exact order number and model identifier against similar Techable listings before buying.

How much is this iMac worth?

Value depends on RAM, storage, battery health, cosmetic condition, accessories, and market demand. Use the SellMac path on this page for a quote or use the identifiers here when comparing resale prices.

What should I search if this page is not the exact configuration?

Search the order number first when available, then compare the A-number, EMC, model identifier, year, chip, RAM, and storage. The same A-number can cover more than one configuration.

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