C# unsafe code benchmark

using System;

namespace Benchmark
{
    class Program
    {

        static void Main(string[] args)
        {

            int timePassed = 0;
            int timeStamp = 0;

            CalculateSafe();
            CalculateUnsafe();

            timeStamp = Environment.TickCount;
            CalculateSafe();
            timePassed = Environment.TickCount - timeStamp;
            Console.WriteLine("Safe done: " + timePassed);

            timeStamp = Environment.TickCount;
            CalculateUnsafe();
            timePassed = Environment.TickCount - timeStamp;
            Console.WriteLine("Unsafe done: " + timePassed);

            Console.ReadLine();

        }

        static void CalculateSafe()
        {

            //simple udregninger
            int i = 0;
            while (i < 200000000)
            {
                i++;
                double o = i * 1.5;
                double l = o / 2.25;
                o--;
                l++;
            }

            i = 0;
            int[] array = new int[100000000];
            int safe = 5;
            while (i++ < array.Length - safe)
            {
                int offset = i;
                int result = array[offset];
                offset++;
                result = array[offset];
                offset++;
                result = array[offset];
                offset++;
                result = array[offset];
            }

        }

        //dette er unsafe (C++) kode.
        static unsafe void CalculateUnsafe()
        {

            //simple udregninger
            int i = 0;
            while (i < 200000000)
            {
                i++;
                double o = i * 1.5;
                double l = o / 2.25;
                o--;
                l++;
            }

            i = 0;
            int[] array = new int[100000000];
            int safe = 5;
            fixed (int* value = &array[i])
            {
                while (i++ < array.Length - safe)
                {
                    int* offset = value;
                    int result = *offset;
                    offset++;
                    result = *offset;
                    offset++;
                    result = *offset;
                    offset++;
                    result = *offset;
                }
            }

        }

    }
}