Is x86 RISC or CISC? [closed]

x86 is a CISC architecture. The number of instructions is a big factor as all cisc architectures with all more instructions. Furthermore as instructions are complex in cisc they can take >1 cycle to complete, where as in RISC they should be single cycle. The main differences are found here:

+------------------------------+------------------------------+
| CISC                         | RISC                         |
+------------------------------+------------------------------+
| Emphasis on hardware         | Emphasis on software         |
| .                            |                              |
| Includes multi-clock         | Single-clock,                |
| complex instructions         | reduced instruction only     |
| .                            |                              |
| Memory-to-memory:            | Register to register:        |
| "LOAD" and "STORE"           | "LOAD" and "STORE"           |
| incorporated in instruction  | are independent instructions |
| .                            |                              |
| Small code sizes,            | Low cycles per second,       |
| high cycles per second       | large code sizes             |
| .                            |                              |
| Transistors used for storing | Spends more transistors      |
| complex instructions         | on memory registers          |
+------------------------------+------------------------------+

For further research consult here: http://www-cs-faculty.stanford.edu/~eroberts/courses/soco/projects/risc/risccisc/

The early x86's (8086 / 186 / 286 / 386) were definitely CISC.

However, more recent processors can be regarded as hybrid, with a RISC core

Additional reference here