So, right way to do testings is not on HN but inside of VE, so:
bonnie++, VE on "old HN"
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
8G 30737 63 35707 12 18343 3 34590 67 39202 3 83.6 0
bonnie++, VE on "new HN"
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
8G 40157 65 42630 10 25814 5 52552 79 107684 5 182.9 0
Once again they are almost equal, (new faster actually), but on "new HN" server proceeds only 80 mail messages per minute!