X220 with Windows 7 (64 bit) Pro using SSD Samsung 840 (500G) drive

Question

I am using a Thinkpad X220 (4291) laptop with 8 gigs of RAM.  I recently switched my HDD for an SSD (Samsung 840 which is 500G).  I have been following the posts and have set the BIOS accordingly as well as updated firmware for the drive.  I use Crystal Disk Mark for measuring the read/write of the drive and am not getting the speeds I should.  I currently get:
CrystalDiskMark 3.0.2 (C) 2007-2013 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
           Sequential Read :    93.514 MB/s
          Sequential Write :    95.135 MB/s
         Random Read 512KB :    89.534 MB/s
        Random Write 512KB :    89.051 MB/s
    Random Read 4KB (QD=1) :    12.735 MB/s [  3109.1 IOPS]
   Random Write 4KB (QD=1) :    29.898 MB/s [  7299.3 IOPS]
   Random Read 4KB (QD=32) :    85.220 MB/s [ 20805.6 IOPS]
  Random Write 4KB (QD=32) :    54.319 MB/s [ 13261.4 IOPS]
  Test : 1000 MB [C: 5.3% (24.6/465.8 GB)] (x5)
  Date : 2013/01/14 13:23:26
    OS : Windows 7 Professional SP1 [6.1 Build 7601] (x86)
As you can see the speed is drastically slower than advertised.  (Should get 504 Mbits/sec read)
Any thoughts?
Thanks,
Jamie

Answer 1

I have an X220 with W8 Pro and Samsung 840 Pro.  Getting 528 read and 474 sequential write.   Did you install the Samsung Magician software and update the firmware on the SSD? 
Samsung Magician will also provide a speedtest you can check against crystal disk mark.
Lots of sites for optimizing SSD settings but unless it is a firmware issue I don't know why you would get such slower speeds.
Kent