Hardware Reference
In-Depth Information
Once your Raspberry Pi has booted up in Raspbian Linux, you can check the board's
identification with the following command:
$ cat /proc/cpuinfo
Processor : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture : 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7
Hardware : BCM2708
Revision : 000f
Serial : 00000000f52b69d9
The preceding example reports a revision of
000f
, which is a Rev 2.0 Pi.
Overclocking
Raspbian Linux for the Raspberry Pi is conservatively configured for reliability by default.
Those with the need for speed can reconfigure it for increased performance but at the risk
of less-reliable operation.
Raspbian Linux 3.6.11 provides a
raspi-config
menu of five CPU profiles.
The profile None is the default:
Profile
ARM CPU
Core
SDRAM
Overvolt
None
700 MHz
250 MHz
400 MHz
0
Modest
800 MHz
250 MHz
400 MHz
0
Medium
900 MHz
250 MHz
450 MHz
2
High
950 MHz
250 MHz
450 MHz
6
Turbo
1 GHz
500 MHz
600 MHz
6
The
raspi-config
requires root privileges and is started as follows:
$ sudo raspi-config
The initial menu screen provides an
overclock
selection with the description
Configure overclocking
. Choosing that menu item opens another menu, allowing you
to choose a profile.
