"Debian GNU/Linux runs on computers ranging from
palmtops and handheld systems to supercomputers, and on nearly
everything in between. A total of twelve architectures are
supported: Sun SPARC (sparc), HP Alpha (alpha), Motorola/IBM
PowerPC (powerpc), Intel IA-32 (i386), IA-64 (ia64), HP PA-RISC
(hppa), MIPS (mips, mipsel), ARM (arm, armel), IBM S/390 (s390),
and AMD64 and Intel EM64T (amd64).
"Debian GNU/Linux 5.0 "Lenny" adds support for Marvell's Orion
platform which is used in many storage devices. Supported storage
devices include the QNAP Turbo Station series, HP Media Vault
mv2120, and Buffalo Kurobox Pro. Additionally, "Lenny" now supports
several Netbooks, in particular the Eee PC by Asus. "Lenny" also
contains the build tools for Emdebian which allow Debian source
packages to be cross-built and shrunk to suit embedded ARM
systems.
"Debian GNU/Linux 5.0 "Lenny" includes the new ARM EABI port,
"armel". This new port provides a more efficient use of both modern
and future ARM processors. As a result, the old ARM port (arm) has
now been deprecated."