DB Connections in ASP.NET, MySQL vs. SQL Server

// MySQL

const string CONNECTION_STRING =
"server=localhost;database=testdb;user id=root;password=mypassword;max pool size=250;";
for (int i = 0; i < 5000; i++)
{
  using (MySqlConnection con = new MySqlConnection(CONNECTION_STRING))
  {
    con.Open();
  }
}

// SQL Server

const string CONNECTION_STRING = "Data Source=localhost;Initial Catalog=testdb;Integrated Security=True;max pool size=250;";
for (int i = 0; i < 5000; i++)
{
  using (SqlConnection con = new SqlConnection(CONNECTION_STRING))
  {
    con.Open();
  }
}

[client]
port    	= 3306
socket  	= /tmp/mysql.sock

[mysqld]
port    	= 3306
socket  	= /tmp/mysql.sock
skip-locking
key_buffer = 384M
max_allowed_packet = 1M
table_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
thread_concurrency = 8

server-id   = 1

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
no-auto-rehash

[isamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

[myisamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout