On Windows, you can check the features of your CPU using a tool like CPU-Z.
On the web, you can look up your CPU on Intel ARK and see its details. This is not recommended, since ARK does not show all the flags or features of a CPU.
On Linux, I like to look at the
/proc/cpuinfo. To see what feature maps to each flag, see the
arch/x86/include/asm/cpufeature.hin the Linux source code. The flags will all have a prefix of
X86_FEATURE_and the comment that follows describes the feature.
The easiest way to get information about your CPU is:
$ cat /proc/cpuinfo
This lists out all the details of every CPU core detected by the Linux OS.
To just get the model of your CPU:
$ cat /proc/cpuinfo | grep "model name"
Tried with: Ubuntu 14.04