Hardware compatibility is particularly important if you have an older system or a system that you built yourself. Red Hat Enterprise Linux 6.9 should be compatible with most hardware in systems that were factory built within the last two years.
However, hardware specifications change almost daily, so it is difficult to guarantee that your hardware is 100% compatible.
One consistent requirement is your processor. Red Hat Enterprise Linux 6.9 supports, at minimum, all 32-bit and 64-bit implementations of Intel microarchitecture from P6 and onwards and AMD microarchitecture from Athlon and onwards.
The most recent list of supported hardware can be found at: