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transfer rates and funky gadgets


womblemaster
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this looks like the poor mans sata drive?

 

http://www.ebay.co.uk/itm/170939638695

 

I assume this would be faster than a sata 2 spindle drive but slower than sata 3.

 

`Support SATA I/II host`

 

SD/ SDHC/ MMC Cards data transfer rates are ave??

 

is that where the bottle neck would be on this?  or the speed of the sata controller.

 

i need 15-20gb of fast read storage space,  this is a hamfisted solution, but am good at the heath robinson stuff....

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comparing a sata 3 platter drive to lastest type sd card=

 

Performance (sata)

 

Drive Transfer Rate

    600 MBps (external)

 

Internal Data Rate

    150 MBps

 

`the new architecture of SDXC cards designed to reach speeds up to a maximum transfer rate of 104MB/sec`

 

in practice the cards are achieveing 50mb/sec rates atmo.

 

what i dont understand is how seek times affects all this.

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  • 2 months later...

http://www.steelbytes.com/?mid=20

 

found this for testing....dunno how good it is.  suprised to see the sata 2 drive gave only 60mb/sec READ rates.....ide was around 55mb. (test doesnt do write rates...in non destructive manner)

 

assumed the sata drive would be 80+

 

[burst rates were over 100mb/sec]  not sure how this stat compares to real wolrd usage.

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