HttpClient benchmark comparison between disposing and not disposing the instance

Program.cs

class Program
{
    private const int CallsToMake = 100;
    private const string UrlToCall = "http://www.pudim.com.br";

    static void Main(string[] args)
    {
        Time(DisposingHttpClient, "Disposal of HttpClient instance");
        Time(ReusingHttpClient, "Reuse of HttpClient instance");
    }

    private static void Time(Action action, string title)
    {
        var watch = Stopwatch.StartNew();

        Console.WriteLine("Starting test for '{0}'", title);
        action();
        Console.WriteLine("Execution ended after {0} ms", watch.ElapsedMilliseconds);
        Console.WriteLine();
    }

    private static void DisposingHttpClient()
    {
        Parallel.For(0, CallsToMake, i =>
            {
                using (var client = new HttpClient())
                {
                    client.GetStringAsync(UrlToCall).Wait();
                }
            });
    }

    private static void ReusingHttpClient()
    {
        var client = new HttpClient();

        Parallel.For(0, CallsToMake, i => client.GetStringAsync(UrlToCall).Wait());
    }
}