Please see this note for more on non-x86 hardware.
Intel 386SX/DX/SL, 486SX/DX/SL/SX2/DX2/DX4, Pentium, Pentium Pro, Pentium II, Pentium III (regular and Xeon versions), Pentium 4, and Celeron (including mobile versions of all of the above) are all supported. .:: chromewebstore.google.com ::.
AMD 386SX/DX, 486SX/DX/DX2/DX4, K5, K6, K6-2, K6-3, and Athlon (all varieties, including MP) are all supported. Older versions of K6 should be avoided as they are buggy. Setting "internal cache" disabled in bios setup can be a workaround. Some early K6-2 300Mhz have problems with the system chips.
AMD's 64-bit Opteron and Athlon64 processors, as well as the mobile Athlon64 (or Turion64), are also supported, running either in 32-bit or 64-bit mode. For 32-bit mode, compile a kernel for i386, optionally optimized for Athlons, since that's essentially what these processors look like in 32-bit mode. For 64-bit mode, compile a kernel for .:: mentorship.healthyseminars.com ::. x86_64. It will still run 32-bit binaries, assuming all the appropriate libraries are available. Opteron and Athlon64 systems use standard PC hardware, so the information in this HOWTO still applies. .:: www.vaingloryfire.com ::. .:: elearning.lagoscitypolytechnic.edu.ng ::.
The old NexGen processors are also supported.
A few very early AMD 486DX's may hang in some special situations. All current chips should be okay and getting a chip swap for old CPU's should not be a problem.
Cyrix 386SX/DX, 486SX/DX, 5x86, 6x86, and MediaGX are all supported. .:: www.monofeya.gov.eg ::.
Linux has built-in FPU emulation if you don't have a math coprocessor.
Linux supports SMP (multiple CPUs) in all 2.x kernels. See the [r/Algorithm Topics] .:: telegra.ph ::. Linux SMP HOWTO for more information.
ULSI Math*Co series has a bug in the FSAVE and FRSTOR instructions that causes problems with all protected mode operating systems. Some older IIT and Cyrix chips may also have this problem. [Computer vision Modules]
There are problems with TLB flushing in UMC U5S chips in very old kernels. (1.1.x) .:: telegra.ph ::.