Z13 - poor performance of replacement SSD

Hi guys,

as my post probably went unnoticed in another thread, I open a new one:

I've got a Z13 with a HDD (and w/o ODD) which I just replaced with a Samsung 470 SSD.
First thing I noticed is that the SSD is not recognised in the BIOS - however, Windows installation worked fine.
So everything seemed fine until I did a performance benchmark: I did not get any more than 120mb/s in read as in write. The 470 should make up to 250 mb/s.
I also tried an firmware update but that did not work as the update utility (based on DOS) did not find the SSD either.

any ideads what could be the problem?

thanks,

silent

 

Please post Intel RST settings and CrystalDiskMark and/or HDTune benchmark results.

 

I could be wrong, but you probably need to enable AHCI using the hacked BIOS.

Good luck.

 

He has the HDD version so that will most likely be already set.

 

Code:

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :   122.626 MB/s
          Sequential Write :   120.540 MB/s
         Random Read 512KB :   106.499 MB/s
        Random Write 512KB :   116.838 MB/s
    Random Read 4KB (QD=1) :    11.753 MB/s [  2869.5 IOPS]
   Random Write 4KB (QD=1) :    21.404 MB/s [  5225.5 IOPS]
   Random Read 4KB (QD=32) :    80.349 MB/s [ 19616.5 IOPS]
  Random Write 4KB (QD=32) :    62.115 MB/s [ 15164.9 IOPS]

  Test : 1000 MB [C: 63.9% (37.4/58.6 GB)] (x5)
  Date : 2011/05/24 22:18:03
    OS : Windows 7  SP1 [6.1 Build 7601] (x64)

Intel RST is attached.

Is that what you wanted?

 

That's SATA 1 mode !
There's some post in the SSD thread..

EDIT: here it is.. http://forum.notebookreview.com/sol...-samsung-470-series-thread-4.html#post7516611

 

Thanks a lot! The registry fix didnt work for me as the value was already on 0 but going back to the windows driver did the trick

Code:

-----------------------------------------------------------------------
CrystalDiskMark 3.0.1 x64 (C) 2007-2010 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

           Sequential Read :   218.750 MB/s
          Sequential Write :   216.469 MB/s
         Random Read 512KB :   174.009 MB/s
        Random Write 512KB :   205.265 MB/s
    Random Read 4KB (QD=1) :    11.608 MB/s [  2834.0 IOPS]
   Random Write 4KB (QD=1) :    21.067 MB/s [  5143.4 IOPS]
   Random Read 4KB (QD=32) :   125.965 MB/s [ 30753.1 IOPS]
  Random Write 4KB (QD=32) :    74.794 MB/s [ 18260.3 IOPS]

  Test : 1000 MB [C: 63.8% (37.4/58.6 GB)] (x2)
  Date : 2011/05/25 0:16:41
    OS : Windows 7  SP1 [6.1 Build 7601] (x64)
  

//edit: ATTO bench gets max. 242 MB/s in read. So thats good enough for me^^

Could there be any downside of not using the Intel driver?