Apple Power Macintosh G4 733 (Digital Audio) Specs (M7681LL/A*)
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The Apple Power Macintosh G4/733 (Digital Audio) features a 733 MHz PowerPC 7450 (G4) processor with the AltiVec "Velocity Engine" vector processing unit, 256k "on chip" level 2 cache, and 1 MB of level 3 backside cache. It shipped configured with 256 MB of RAM, a 60 GB Ultra ATA/66 hard drive, and a 4X AGP NVIDIA GeForce 2 MX graphics card with 32 MB of SDRAM. AirPort (802.11b) was available by custom configuration.
There are two modestly different configurations of this model -- the original configuration (M7681LL/A), which unveiled an all new 2X DVD-R/CD-RW "SuperDrive" for US$3499, and a lower-end configuration (M8451LL/A) that swapped the "SuperDrive" for a 8X CD-RW drive and sold for US$2999.
In addition to the digital audio sound system with a highly-efficient Tripath "Class T" amplifier that powers USB speakers, for which the series is named, the Power Macintosh G4 (Digital Audio) also introduced a faster system bus (133 MHz supporting "over 1-GBps data throughput"), faster PC133 RAM (but lower capacity than the "Gigabit Ethernet" series that it replaced), and four full-length 64-bit, 33 MHz PCI slots.
All Power Macintosh G4 (Digital Audio) models use a case design effectively the same as that introduced with the Power Macintosh G3 (Blue & White) -- complete with a fold down door on the side that makes upgrading very easy -- but is clad in a more conservative "graphite" and white color scheme. Custom configurations also were available.
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Click on the underlined category text for related details. The most commonly needed info is "open" by default, but all info is important.
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| Introduction Date: |
January 9, 2001 |
Discontinued Date: |
July 18, 2001 |
| Details: |
The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended. |
| Processor Type: |
PowerPC 7450 (G4) |
Processor Speed: |
733 MHz |
| Details: |
The PowerPC G4 includes the AltiVec "Velocity Engine" vector processor. |
| Processor Upgrade: |
AGP G4 Daughtercard |
FPU: |
Integrated |
| Details: |
The Power Macintosh G4 (Digital Audio) models have the processor mounted on a custom 300-pin daughtercard. |
| System Bus Speed: |
133 MHz |
Cache Bus Speed: |
183 MHz* |
| Details: |
This system has a 256k "on chip" level 2 cache running at processor speed and a 1 MB backside level 3 cache running on a bus one-fourth of the processor speed (183 MHz). |
| ROM/Firmware Type: |
Open Firmware |
ROM/Firmware Size: |
1 MB |
| Details: |
Boot ROM and around 1 MB, other instructions are loaded into RAM (NewWorld). |
| L1 Cache: |
64k |
L2/L3 Cache: |
256k (on chip), 1 MB |
| Details: |
This system has a 256k "on chip" level 2 cache running at processor speed and a 1 MB backside level 3 cache running on a bus one-fourth of the processor speed (183 MHz). |
| RAM Type: |
PC133 SDRAM |
Min. RAM Speed: |
133 MHz |
| Details: |
Supports 133 MHz PC133 SDRAM (3.3v, noninterleaved, 64-bit-wide, 168-pin). Apple also noted that this model has "full 128-bit internal memory data paths". |
| Standard RAM: |
256 MB |
Maximum RAM: |
1.5 GB |
| Details: |
Site sponsor Other World Computing sells Power Macintosh G4 processors and memory, as well as hard drives, accessories, and other upgrades. |
| Motherboard RAM: |
None |
RAM Slots: |
3 |
| Video Card: |
GeForce2 MX* |
VRAM Type: |
SDRAM* |
| Details: |
*By default, this model has a NVIDIA GeForce2 MX graphics card with 32 MB of SDRAM. It also could be configured at the time of purchase with an ATI Radeon graphics card with 32 MB of DDR RAM or a NVIDIA GeForce3 graphics card with 64 MB of DDR RAM. The video card occupies a 4X AGP slot. |
| Standard VRAM: |
32 MB |
Maximum VRAM: |
32 MB* |
| Details: |
32 MB SDRAM provided by default NVIDIA GeForce2 MX graphics card. It also could be configured at the time of purchase with an ATI Radeon graphics card with 32 MB of DDR RAM or a NVIDIA GeForce3 graphics card with 64 MB of DDR RAM. |
| Display Support: |
Single Display |
Resolution Support: |
1920x1200 |
| Details: |
Apple advertised that this system can support "up to 1920 by 1200 pixel resolution at 32 bits per pixel (millions of colors)". |
| 2nd Display Support: |
None |
2nd Max. Resolution: |
N/A |
| Standard Hard Drive: |
60 GB (7200 RPM) |
Int. HD Interface: |
Ultra ATA/66 (ATA-5) |
| Details: |
Can officially support two Ultra ATA/66 hard drives -- drives larger than 128 GB are not supported. It could be configured with up to three 10,000 RPM Ultra160 SCSI drives at the time of purchase, or one Ultra ATA/66 and two Ultra160 SCSI drives, as build-to-order options. |
| Standard Optical: |
2X "SuperDrive"* |
Standard Disk: |
None** |
| Details: |
Apple reported that the 2X DVD-R/CD-RW SuperDrive installed in the original configuration "writes DVD-R at 2X, reads DVD at 6X, writes CD-R at 8X, writes CD-RW at 4X, and reads CD at 24X". The 8X CD-RW drive installed in the lower-end configuration (M8451LL/A) "writes CD-R at 8X, writes CD-RW at 4X, and reads CD at 32X". It uses a EIDE (ATA-3) bus.
**An internal Zip 250 drive was available build-to-order. |
| Standard Modem: |
56k v.90 |
Standard Ethernet: |
10/100/1000Base-T |
| Details: |
Internal modem and 10/100/1000Base-T (Gigabit) Ethernet standard. |
| Standard AirPort: |
802.11b (Optional) |
Standard Bluetooth: |
None |
| Details: |
AirPort (802.11b) was available as a build-to-order addition. |
| USB Ports: |
2 (1.1) |
Firewire Ports: |
2 (400) |
| Details: |
USB 1.1 ports are dual channel.
Also see: Complete Ports. |
| Expansion Slots: |
4 PCI*, AP |
Expansion Bays: |
4 3.5" |
| Details: |
*In the default configuration, this model has four open 33 MHz 64-bit PCI slots, and a 4X AGP slot occupied by the graphics card. It also has an open AirPort (802.11b) expansion slot.
It has four 3.5" drive bays (three are internal and intended for hard drives, and one is external and intended for a Zip 250 drive). With a single hard drive and no Zip drive installed, two internal 3.5" bays and the external 3.5" bay are free. The system also has an external 5.25" drive bay occupied by the optical drive. |
| Incl. Keyboard: |
Apple Pro Keyboard |
Incl. Input: |
Apple Pro Mouse |
| Case Type: |
Tower |
Form Factor: |
Power Mac G4 (Graphite) |
| Apple Model No: |
M7681LL/A* |
Apple Subfamily: |
Digital Audio |
| Details: |
*M7681LL/A refers to the original configuration released with a DVD-R/CD-RW "SuperDrive". The configuration released on March 8, 2001 with a CD-RW drive was assigned M8451LL/A. |
| Gestalt/Model ID: |
N/A |
Machine Model: |
PowerMac3,4 |
| Details: |
Please note that these identifiers refer to more than one model. |
| Battery Type: |
3.6V Lithium |
Battery Life: |
N/A |
| Pre-Installed MacOS: |
9.1, X 10.0.3* |
Maximum MacOS: |
X 10.4.11 |
| Details: |
*The original configuration shipped with MacOS 9.1 pre-installed, later configurations had MacOS X 10.0.3 installed as well. Please note that this system cannot run versions of MacOS X more recent than 10.4.11. |
| MacOS 9 Support: |
Boot/Classic Mode |
Windows Support: |
Emulation Only |
| Details: |
This Power Macintosh G4 model is capable of booting MacOS 9 and using MacOS 9 applications within the MacOS X "Classic" environment.
Site-sponsor OHS specializes in heavily upgraded Macs capable of running both MacOS X and MacOS 9 applications. |
| Dimensions: |
17.0 x 8.9 x 18.4 |
Avg. Weight: |
30.0 lbs. (13.6 kg) |
| Details: |
In inches - height by width by depth, (43.2 cm, 22.6 cm, 46.7 cm). |
| Original Price: |
US$3499* |
Est. Current Retail: |
US$350-US$425 |
| Details: |
*The original configuration with the DVD-R/CD-RW "SuperDrive" sold for US$3499 (M7681LL/A). The lower-end configuration with the CD-RW drive originally sold for US$2999 (M8451LL/A).
Please note that on average the estimated current retail pricing of used systems is updated twice a year (please refer to the date on the bottom of the page for the date last updated).
Photo Credit: Apple Computer. |
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