SystemInfo.processorCount
static var processorCount: int;
static int processorCount;
static processorCount as int
Description

Number of processors present (Read Only).

This is number of processors as reported by the operating system. The processors could be separate processors, cores of the same processor, or logical processors (e.g. in case of one Hyper-Threaded CPU, this would report two CPUs since that's what it looks like to the system).
	// Prints "4" on a quad-core CPU.

print (SystemInfo.processorCount);
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void Example() {
        print(SystemInfo.processorCount);
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def Example() as void:
		print(SystemInfo.processorCount)

See Also: SystemInfo.processorType.