So after a few users have claimed that a Class 10 card is the same as a UHS1 card, and thus you really don't need a faster card like a UHS1 or UHS3 card, because they all have a minimum sustained write 10MB/s per the SD specs... I decided to do some testing and benchmarking to determine if that is the case because I was bored.
I started with A1 SD Benchmark and I also did some comparison of adopted storage vs portable storage with SD cards and found little difference in speed in the benchmarks, so I testing everything as portable storage because the point was to see if the card rating made a real difference in THIS device. I also discarded any test results that had cache hits. The Moto G 2015 used is a purely stock XT1540 2/16GB version, no apps are installed besides the benchmark app, SD Insight, and what came on the phone, and it was given a fresh reboot just before starting and allowed to sit for 10 minutes or so before starting. Each card was freshly formatted as FAT32 in my computer's card reader before being inserted into the G. Unfortunately I do not have a UHS3 card to test with.
Test Results
Internal 16GB storage: 98.60MB/s read - 42.69MB/s write
Samsung EVO+ 32GB UHS1 Card: 44.81MB/s read - 19.45MB/s write
Samsung EVO 64GB UHS1 Card: 38.44MB/s read - 19.45MB/s write
MicroCenter (generic) 16GB Class 10 Card: 21.11MB/s read - 11.22MB/s write
PNY 16GB Class 10 Card: 20.32MB/s read - 11.58MB/s write
Sandisk 6GB Class 6 Card: 20.64MB/s read - 14.18MB/s write
Toshiba 4GB Class 4 Card: 22.80MB/s - 9.68MB/s
And just for grins... My Moto X Pure edition's 32GB internal storage was able to do 101.59MB/s reads and 45.89MB/s writes, so not much different the Moto G 2015's internal storage, meaning that the eMMC chip is probably the limiting factor. SD Insight says the G3 uses Micron internal eMMC chip, and the Moto X uses a Toshiba storage chip.
So looking at the results, there is a significant difference in both read and write speed between the Class 10 and UHS1 cards. I just threw the others in there for for fun, although it was interesting to see the Class 6 Sandisk card put up impressive write speeds, although I am not sure why it was so high but subsequent tests were similar. The PNY card is the "normal" card installed in this phone, but the phone thinks it is a Lexar card and SD Insight says it is a Barun Electronics storage chip, which matches up with both PNY and Lexar. Also, every single test with the UHS1 cards yielded a 19.45MB/s write speed, so I am guessing that is the limit of the card reader chipset to be able to write data in the phone, but I can not substantiate that as of yet.
Take it how you want... I was bored, but a UHS1 card is clearly faster in this device.
I started with A1 SD Benchmark and I also did some comparison of adopted storage vs portable storage with SD cards and found little difference in speed in the benchmarks, so I testing everything as portable storage because the point was to see if the card rating made a real difference in THIS device. I also discarded any test results that had cache hits. The Moto G 2015 used is a purely stock XT1540 2/16GB version, no apps are installed besides the benchmark app, SD Insight, and what came on the phone, and it was given a fresh reboot just before starting and allowed to sit for 10 minutes or so before starting. Each card was freshly formatted as FAT32 in my computer's card reader before being inserted into the G. Unfortunately I do not have a UHS3 card to test with.
Test Results
Internal 16GB storage: 98.60MB/s read - 42.69MB/s write
Samsung EVO+ 32GB UHS1 Card: 44.81MB/s read - 19.45MB/s write
Samsung EVO 64GB UHS1 Card: 38.44MB/s read - 19.45MB/s write
MicroCenter (generic) 16GB Class 10 Card: 21.11MB/s read - 11.22MB/s write
PNY 16GB Class 10 Card: 20.32MB/s read - 11.58MB/s write
Sandisk 6GB Class 6 Card: 20.64MB/s read - 14.18MB/s write
Toshiba 4GB Class 4 Card: 22.80MB/s - 9.68MB/s
And just for grins... My Moto X Pure edition's 32GB internal storage was able to do 101.59MB/s reads and 45.89MB/s writes, so not much different the Moto G 2015's internal storage, meaning that the eMMC chip is probably the limiting factor. SD Insight says the G3 uses Micron internal eMMC chip, and the Moto X uses a Toshiba storage chip.
So looking at the results, there is a significant difference in both read and write speed between the Class 10 and UHS1 cards. I just threw the others in there for for fun, although it was interesting to see the Class 6 Sandisk card put up impressive write speeds, although I am not sure why it was so high but subsequent tests were similar. The PNY card is the "normal" card installed in this phone, but the phone thinks it is a Lexar card and SD Insight says it is a Barun Electronics storage chip, which matches up with both PNY and Lexar. Also, every single test with the UHS1 cards yielded a 19.45MB/s write speed, so I am guessing that is the limit of the card reader chipset to be able to write data in the phone, but I can not substantiate that as of yet.
Take it how you want... I was bored, but a UHS1 card is clearly faster in this device.
from xda-developers http://ift.tt/2c1nBMg
via IFTTT
No comments:
Post a Comment