Adding a range to List and LinkedList speed comparison

listaddrrange.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;

namespace ListTest
{
    static class Program
    {
        public static void AppendMany<T>( this LinkedList<T> collection, params T[] elements )
        {
            foreach ( var element in elements )
            {
                collection.AddLast( element );
            }
        }

        static void Main( string[] args )
        {
            int[] items = new int[ 65536 ];
            Random rand = new Random();

            for ( int i = 0; i < 65536; ++i )
                items[ i ] = rand.Next();

            LinkedList<int> link = new LinkedList<int>();
            List<int> list = new List<int>();

            Stopwatch timer = new Stopwatch();

            timer.Start();
            for ( int i = 0; i < 65536; ++i )
            {
                list.AddRange( items );
                list.Clear();
            }
            timer.Stop();
            Console.WriteLine( "Array list: " + timer.ElapsedMilliseconds + "ms" );
            timer.Restart();
            for ( int i = 0; i < 65536; ++i )
            {
                link.AppendMany( items );
                link.Clear();
            }
            timer.Stop();
            Console.WriteLine( "Linked list: " + timer.ElapsedMilliseconds + "ms" );
            Console.ReadKey();
        }
    }
}