| Linux 2.4 | SCO OpenServer 5.0 | Solaris 7.0 | NT 4 | |
| Platformas | PC >= 386, IA64
DECAlpha, MIPS Sparc, UltraSparc, PPC, StrongARM |
PC >= 386
|
Sparc
UltraSparc PC >= 386 |
i386 >= 486,
--- dropped Alpha. PowerPC's y MIPS |
| Address space | 32 bit PC's y Sparc's
64 bit UltraSparc - Alpha IA64 |
32 bit | 32 bit on Intel and Sparc, 64 bit on UltraSparc | 32 bit |
| Multiple CPU's | SMP up to 16 CPU's,
256 CPU's SGI. clustering |
SMP up to 30 CPU's | SMP on both Sparc and Intel
64 CPU's on sparc |
SMP
2 CPU's in WS edition, ???? 128 CPU's IBM. |
| Max. file size | 16 TB (ext2) |
|
1 TB (on UltraSparc) | 2 GB on FAT partitions,
64 GB on NTFS |
| OS Flavor | Posix Unix98 | SysV | SysV R4 | A unique Microsoft design. |
| Max. memory | 64 GB | 2 GB |
|
2 GB for progs and 2 GB for NT |
| Memory protection | yes | yes | yes | mostly
Needs to be switched on for some 16 bit apps |
 |
 |