I hope the info below helps in answering this question. It's a well cared for second hand job on ebay. Sorry if it's a bit long, here goes:

APPLE G5 POWERMAC DESKTOP COMPUTER MODEL A1047

Used but in excellent condition.

Customised RAM to 4 GB MAC OSX 10 INSTALLED PRELOADED WITH LOGIC PRO 9

PLEASE NOTE: I DO NOT HAVE THE ORIGINAL BOX AND WOULD PREFER THE BUYER TO COLLECT FROM STREATHAM. HOWEVER, I WILL ARRANGE COURIER DELIVERY IF NECESSARY.

THE COMPUTER WILL BE PROFESSIONALLY PACKED TO ELIMINATE ANY RISK OF DAMAGE.

The Apple Power Macintosh G5/1.8 (PCI-X), is a member of the first Mac series to use the 64-bit PowerPC 970 (G5) processor, and consequently are arguably the first "desktop"

computers to use 64-bit chips. In addition to higher clock speeds, the PowerPC 970 (G5) has a "new execution core that features massively parallel computation for an

unprecedented 215 in-flight instructions", and the Power Macintosh G5 uses a new system architecture as well. Together this combination results in major speed gains compared

to earlier Apple systems.

The Power Macintosh G5/1.8 (PCI-X) features a 1.8 GHz PowerPC 970 (G5) processor with an optimized AltiVec "Velocity Engine" vector processing unit, and 512k level 2 on-chip

cache, and shipped configured with 512 MB of 400 MHz PC3200 DDR SDRAM (Upgraded to 4 GB), a 160.0 GB (7200 RPM) Serial ATA hard drive, a 4X DVD-R/CD-RW "SuperDrive", and a

NVIDIA GeForce FX 5200 Ultra (AGP 8X Pro) video card with 64 MB of DDR SDRAM. In addition to including FireWire "400" and "800", ADC, DVI, support for AirPort Extreme (802.11g) and Bluetooth 1.1, the Power Macintosh G5 also introduces USB 2.0 (on the Mac) and optical digital audio in/out. Additionally, this model and the higher-end Power Macintosh G5 2.0 DP introduced PCI-X slots.