slow speeds with SSD in vaioZ newmodeus caddy, anyone have one of these?

I just put a sandisk extreme 480GB into my z12 and I'm getting much slower speeds than this ssd is capable of. It's giving me 200MBps sequential. Has anyone here done benchmarks on their ssd in a newmodeus caddy? please post your results.

 

Could you post up AS SSD benchmarks? Also, I think you will be limited to 250MB/s max due to SATA II speeds.

 

Sandisk says on a sata2 interface it should get 285/275 sequential, and these benchmarks show that the controller is capable of pushing the raided disks to 250, so something is wrong.

Maybe sony cheaped out on the quality of the sata ribbon cable because it was only intended to run a dvd drive, or it could be bad wiring on my caddy, buggy firmware on the ssd because its a new model... it could be a lot of things so I hope someone can post up their benchmarks to compare against.

If I can't get this thing running at the proper speeds I am going to try and exchange it for a 512GB crucial m4, more room for storage and probably will run at the exact same speed.


Sandisk480GB


Toshiba Raid0


Sandisk480GB

Code:

Toshiba Raid0
-----------------------------------------------------------------------
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 :   217.074 MB/s
          Sequential Write :   174.675 MB/s
         Random Read 512KB :   139.764 MB/s
        Random Write 512KB :   206.933 MB/s
    Random Read 4KB (QD=1) :    16.054 MB/s [  3919.3 IOPS]
   Random Write 4KB (QD=1) :     6.082 MB/s [  1484.9 IOPS]
   Random Read 4KB (QD=32) :    30.055 MB/s [  7337.7 IOPS]
  Random Write 4KB (QD=32) :     5.977 MB/s [  1459.2 IOPS]

  Test : 1000 MB [C: 90.8% (108.2/119.1 GB)] (x5)
  Date : 2012/06/06 2:23:06
    OS : Windows 7  SP1 [6.1 Build 7601] (x64)

 
Sandisk480GB
-----------------------------------------------------------------------
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 :   206.474 MB/s
          Sequential Write :   182.998 MB/s
         Random Read 512KB :   186.685 MB/s
        Random Write 512KB :   209.646 MB/s
    Random Read 4KB (QD=1) :    16.932 MB/s [  4133.8 IOPS]
   Random Write 4KB (QD=1) :    12.767 MB/s [  3117.1 IOPS]
   Random Read 4KB (QD=32) :    18.115 MB/s [  4422.7 IOPS]
  Random Write 4KB (QD=32) :    15.509 MB/s [  3786.4 IOPS]

  Test : 1000 MB [D: 0.0% (0.1/447.1 GB)] (x5)
  Date : 2012/06/06 2:30:28
    OS : Windows 7  SP1 [6.1 Build 7601] (x64)

 

Have you done the advanced BIOS mod?

 

haven't done the bios mod, would it help in any way?

 

disable c-states for the CPU is a quick way to boost your speeds. It's not a Sony thing, it's an Intel issue.

 

About how much speed does it increase?

 

Thanks for mentioning that, because I never would have guessed the CPU is a bottleneck here. I just hacked the bios and tried disable C-states, and that actually made a huge difference! Sequential speed in atto is now 252/260 r/w, when before it measured about 204.5/204.5 r/w. The speeds on the raid went skyhigh as well. So perhaps the entire problem is just a too slow cpu. Is it possible to overclock our CPU or increase our turbo at all?

If I change disk controller mode from RAID to AHCI, would it be any faster? I know that IDE mode is slower than AHCI.