When a particular section becomes hot, then only the fan for that area runs faster. The machine draws air in through the holes in the front panel and passes it over to its other components. The cabinet is divided into four discrete self-contained cooling zones, each having its own fans. It still doesn’t create noise, thanks to the intelligent engineering behind the designing of its cabinet. The machine has nine cooling fans (the PowerPC G5 processors generate a lot of heat). You can also replace it with a USB-based standard two or three-button mouse. But you may get used to pressing the Control key along with mouse click to obtain the right-click functionality. Like the previous G4s it also has a one-button mouse, which may be inconvenient for users who shift from Windows-based machines. There are jacks for the headphone, external AirPort (802.11g wireless) antenna and Bluetooth dongle. Plus, it has optical as well as analog digital audio in/out ports. The G5 has both USB 2.0 and FireWire 800 ports at the machine’s front and rear side. 32-bit systems cannot access more than 4 GB RAM due to technical limitations. The system can support up to 8 GB of dual channel DDR-400 RAM with the maximum CPU-memory bandwidth being 6.4 GB per sec. Second, the input/output subsystem is connected to the system controller by HyperTransport links, which are point-to-point links and offer better bandwidth than conventional shared bus links.

The Pentium and Xeon processors offer a maximum bandwidth of 6.4 GB per sec. First, the front-side bus speed is 1 GHz offering 8 GB per sec system bandwidth to each processor, similar to the latest Athlon 64 FX-53 CPU. It comes with several system advances, to enhance performance.

Apple power mac g5 desktop computer