CARDSPEED - Card Readers and Memory Cards

Memory Stick PRO-HG

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For a long time, there were exactly three cards available: SONY MS PRO-HG Duo with 1GB (MS-EX1G), 2GB (MS-EX2G) and 4GB (MS-EX4G) models.

SanDisk was involved in the original press release from December 2006 announcing the MS PRO-HG standard, but it took until May 2008 until they announced their first series. Although their Extreme IV product line with 40MB/s read/write would have been the appropriate speed range at that time, the first series was the SanDisk Extreme III Memory Stick PRO-HG Duo with 4GB (SDMSHX3-004G-A31) and 8GB (SDMSHX3-008G-A31), with a way unterrated read/write speed of 30MB/s.

Towards the end of 2008, SONY introduced a new series, SONY MS PRO-HG HX. 4GB (MS-HX4G) and 8GB (MS-HX8G) were available at that time, the 16GB (MS-HX16G) model was announced for March 2009. In the meantime, a 32GB (MSHX32G) version is available. Finally, SanDisk released the Ultra Memory Stick PRO-HG Duo series with capacities from 4GB (SDMSPDH-004G) to 32GB (SDMSPDH-032G).

CARDSPEED Benchmark Results

Card    Read  Write
 SanDisk Ultra Memory Stick PRO-HG Duo 32GB  40.21MB/s 274x  31.95MB/s 218x
 SONY Memory Stick PRO-HG Duo HX 32GB  38.71MB/s 264x  18.80MB/s 128x
 SanDisk Extreme III Memory Stick PRO-HG Duo 8GB  40.94MB/s 279x  41.80MB/s 285x
 SONY Memory Stick PRO-HG Duo 4GB  37.85MB/s 258x  32.65MB/s 222x

Market Overview: 8bit Memory Stick PRO-HG

Brand Series Cap. Item Number
SONY Memory Stick PRO-HG Duo 1GB MS-EX1G
SONY Memory Stick PRO-HG Duo 2GB MS-EX2G
SONY Memory Stick PRO-HG Duo 4GB MS-EX4G
SanDisk   Extreme III Memory Stick PRO-HG Duo   4GB SDMSHX3-004G
SanDisk Extreme III Memory Stick PRO-HG Duo 8GB SDMSHX3-008G
SONY Memory Stick PRO-HG HX Duo 4GB MSHX4G
SONY Memory Stick PRO-HG HX Duo 8GB MSHX8G
SONY Memory Stick PRO-HG HX Duo 16GB MSHX16G
SONY Memory Stick PRO-HG HX Duo 32GB MSHX32G
SanDisk Ultra Memory Stick PRO-HG Duo 4GB SDMSPDH-004G
SanDisk Ultra Memory Stick PRO-HG Duo 8GB SDMSPDH-008G
SanDisk Ultra Memory Stick PRO-HG Duo 16GB SDMSPDH-016G
SanDisk Ultra Memory Stick PRO-HG Duo  32GB SDMSPDH-032G 

General Information

Memory Stick PRO-HG will currently be available in Duo size only. Compared to the Memory Stick PRO, the maximum clock rate is raised from 40MHz to 60MHz, while the bus width is doubled from 4bit to 8bit. This is done by using longer pads of about 6.3mm length instead of about 4.8mm length. The previous four data pads are then split up in a front half and a rear half to double the bus width. These two measures raise the theoretical data rate from 19MB/s to 57MB/s.

Memory Stick PRO-HG Duo Pads

The Memory Stick PRO-HG will be fully compatible with existing Memory Stick PRO devices at up to 40MHz and 4bit bus width. This means that a Memory Stick PRO-HG will act exactly as a regular Memory Stick PRO when used with a decive that is not aware of the Memory Stick PRO-HG standard.

SONY Memory Stick PRO-HG Duo ExpressCard 34 Adapter

While all previous ExpressCard based Card Readers only used the USB 2.0 link of the ExpressCard interface, the SONY MSAC-EX1 is a true PCIe x1 adapter with a theroretical bandwidth of about 238MB/s.

The adapter identifies as "Sony Memory Stick Duo ExpressCard Adaptor", shows up as PCI device PCI\VEN_104D&DEV_8211&REV_00, and is handled by the service "SonyEXMS" using SonyEXMS.sys.

First tests with the  SONY MS PRO-HG Duo MS-EX4G  already showed data rates of up to 37.9MB/s, which would not be possible with a USB 2.0 card reader. But the  SanDisk PRO-HG Duo SDMSHX3  raised the bar to 40.9MB/s read and 41.8MB/s write. For further test results, see the  MSAC-EX1 Test Results  Page.

USB 2.0 Card Readers

Of course, Memory Stick PRO-HG can be read with any Memory Stick PRO device. Tests with current card readers without MS PRO-HG support showed read rates of about 16MB/s and write rates of about 14MB/s.

The  Digisol 47100/47110  models are the first retail models with full MS PRO-HG support. The regular file read/write tests showed about 33MB/s read and about 24MB/s write. The maximum rates without filesystem involved will be taken later.

Hans-Jürgen Reggel   ·   ·   2007-10-03 ~ 2011-02-25