Hardware Reference
In-Depth Information
Figure 1-1.
Model B interfaces
Table 1-1.
Model Differences
Resource
Model A
Model B
RAM
256 MB
512 MB
USB ports
1
2
Ethernet port
None
10/100 Ethernet (RJ45)
Power consumption
10
300 mA (1.5 W)
700 mA (3.5 W)
Target price
9
$25.00
$35.00
As you can see, one of the first differences to note is the amount of RAM available.
The revision 2.0 (Rev 2.0) Model B has 512 MB of RAM instead of 256 MB. The GPU also
shares use of the RAM. So keep that in mind when budgeting RAM.
In addition, the Model A does not include an Ethernet port but can support
networking through a USB network adapter. Keep in mind that only one USB port exists
on the Model A, requiring a hub if other USB devices are needed.
Finally, the power consumption differs considerably between the two models.
The Model A is listed as requiring 300 mA vs. 700 mA for the Model B. Both of these
figures should be considered low because consumption rises considerably when the GPU
is active (when using the desktop through the HDMI display port).
