Author Topic: Transfer Speeds across Different Media Types  (Read 255 times)

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rsutter

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Transfer Speeds across Different Media Types
« on: February 04, 2019, 05:03:34 PM »
Hello All,
At the SLO Bytes meeting of 02/03/19, I mentioned that I had purchased a high speed SD card that I planned to leave inserted in the micro SD slot of my Lenovo Yoga X1 laptop in order to expand storage without any bulky external drives.
Curious as to the relative speed of sending and retrieving data from the SD card versus other media, I performed a test.  I have posted the results below
     
Transfer Rates Across Different Media
In all cases, I transferred a 2.2Gb .mp4 file

The laptop is a Lenovo Yoga X1 running Windows 10 Pro version 10.0.17763 Build 17763 with the following specs
Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz, 2112 Mhz, 4 Core(s), 8 Logical Processor(s) and 16GB of RAM
The transfer times from fastest to slowest are as follows

Yoga Desktop to another file on the computer:  2.3 seconds
Yoga Desktop to external Crucial M500 2.5 240GB SSD 6Gb/s over USB 3 using a Stockplop case:  15.9 seconds
Yoga Desktop to external Sandisk 1Tb6Gb/s SSD over USB 3 using Stockplop case:  16.5 seconds
Yoga Desktop to Mushkin Ventura Ultra 120Gb USB 3 Flash Drive:  17.9 seconds
Yoga Desktop to Sandisk Extreme PRO micro SDXC UHS-II 128Gb Card:  22.8 seconds
Yoga Desktop to Sandisk 64Gb USB-C Flash Drive:  1 minute 12.3 seconds
Yoga Desktop to 16Gb Mushkin Atom USB 3 Flash Drive:  3 minutes 44.8 seconds

When I transferred files from the Sandisk Extreme micro SDXC to the Yoga Desktop, the results were identical to the transfer speed from the laptop to the SD card
Sandisk Extreme PRO micro SDXC UHS-II 128Gb Card to Yoga Desktop:  22.8 seconds

I plan to use the SD card for data files that I don't access very often.  Since I will remove the SD card when I want to import photos and videos from my camera, I will not have any essential files on the removable drive.
Ralph Sutter
« Last Edit: February 04, 2019, 05:05:46 PM by rsutter »

Alan J. Raul

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Re: Transfer Speeds across Different Media Types
« Reply #1 on: February 04, 2019, 07:32:58 PM »
That's a FAST card!!! Not cheap, but you get what you pay for.

Is this the card you have?
https://www.bhphotovideo.com/c/product/1233209-REG/sandisk_sdsqxpj_128g_ancm3_128gb_extreme_pro_uhs_ii.html

I use CrystalDiskMark Portable for benchmarking read/write speeds.
https://portableapps.com/apps/utilities/crystaldiskmark_portable

I used CrystalDiskMark for this older 2015 comparison.
OCZ Vertex 4 SSD and a Samsung 950 PRO 512GB PCIe NVMe - M.2. You can see that there is a substantial speed increase with the PCIe interface.

rsutter

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Re: Transfer Speeds across Different Media Types
« Reply #2 on: February 05, 2019, 12:07:43 AM »
Hi Alan,
Yes, you got the card and the source right.  I paid a little less because I had earned credits when I purchased a portrait lens among other items.
Ralph