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Go to SolutionU2413, built-in card reader performance
Hi,
The U2413 built-in card reader with the Realtek driver installed has shown a read data transfer of about 15MB/s slower than without Realtek's driver on every SD card I tested. I also installed the last driver version and the performance seems the same. The solution would be simple, just uninstall the Realtek's card reader driver, but this driver is pre-requisite for Dell Color Calibration Solution to work with this monitor. Is there any trick to improve the card reader performance?
Thanks
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Posted December 27th, 2014 10:00
The version in my Sticky at the top of this board is 6.2.9200.30166_20130827. What versions are you testing?
DELL-Chris M (old account)
#IWork4Dell
2181
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Posted January 2nd, 2015 07:00
I do not see any Dell documentation that discusses how fast read speed is supposed to be. The U2413 User's Guide only mentions the types of cards supported =
MS Pro HG
High Speed Memory Stick (HSMS)
Memory Stick PRO (MSPRO), Memory Stick Duo (w Adapter)
MS Duo Secure Digital (Mini-SD), Secure Digital Card, Mini Secure Digital (w Adaptor),
TransFlash (SD, including SDHC),
MultiMediaCard (MMC)and the maximum capacity =
MS Pro HG Memory Stick Pro-HG 32GB
MS Duo Memory Stick Duo Specification 32GB
SD SD Memory Card support USB 3.0 speed 32GB
MMC Multi Media Card System Specification 32GB
DELL-Chris M (old account)
#IWork4Dell 2181
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Posted January 2nd, 2015 07:00
The maximum read/write speed depends on the sd card class and brand, but the fact is that the read speed become slower when the Realtek driver is installed.
I tested with my fastest card (32GB Sandisk Extreme Pro 95/90MB/s R/W) and with my slowest (16GB Sandisk Ultra 15/15MB/s R/W) and with both the read speed dropped.
I know that the read/write speeds stated by the manufacture is the maximum theoretical, but without the Realtek driver installed the fastest card reach 80MB/s of read speed and the slowest 20MB/s (both average speed). Installing the driver the read speeds become 40MB/s and 7MB/s, respectively.
Something is wrong with this Realtek driver, the hw it seems to be perfectly working.2181
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Posted January 2nd, 2015 07:00
I've also tested with this version... same issue... read speed is dropping more than 15MB/s with the Realtek driver...
2181
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Posted January 3rd, 2015 12:00
I can confirm the same on a U2413. The realtek driver has very poor read speeds. Starts at 30 MB/s and drops to ~20. The standard windows driver averages ~75MB/s. Since when is this drivers prerequisite for dell color calibration solution? I recall it working just fine without the realtek driver.
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Posted January 6th, 2015 08:00
I think this issue is like to mine. card reader work on usb 2.0 MTT hub rather than USB 3.0 hub
2181
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Posted January 8th, 2015 07:00
Thanks Chris, this driver seems to work perfectly!
DELL-Chris M
Community Manager
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56891 Posts
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232143 Points
2181
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Posted January 6th, 2015 05:00
* You can download the driver ZIP file from my share here for the newest RealTek Card Reader Mass Storage driver (6.3.9600.30182)
* Once saved to your desktop
* Unzip the file
* Open the newly created folder and run setup
* Restart the computer when finished
DELL-Chris M (old account)
#IWork4Dell