32GB Micro SD Card Slower than 16GB

Spoonhead98

Spoonhead98

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Hi, I have an Asus Transformer Book T100 and I wanted to use my SanDisk 32GB UHS Speed Class 1 Micro SD Card however when I copy files onto it (Usually large files) it starts to copy really slow but eventually stops. Comparing this to my 16GB Micro SD card which is only Class 4, it copies way faster. Both cards are SDHC andmade by SanDisk. Why is the 32GB card slower than the 16GB even though the 32GB card is rated faster?
Thanks
 

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Yeah right. A Class 1 is really slow. You should really have a Class 10 card. I use that in my T100 and the performance is acceptable - but not more. I have all my user files on it and I also store images on it.

I also use a fast USB3 flash drive. That is a lot faster.
 

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He said UHS, all these stupid cards does get confusing. :confused:
 

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    i5-3230m
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    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
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    1600x900 pixels
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    Samsung SSD 850 EVO 250 GB
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    90 watt brick
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    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.
Right, I missed that, sorry.
 

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The 16GB card is Class 4. The 32GB card is UHS-1. The are both formatted with NTFS and the Default allocation size. I do not understand why the 32GB card is slower.
 

My Computer

System One

  • OS
    Windows 8.1 Pro X64
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Custom
    CPU
    AMD FX 8320
    Motherboard
    ASUS M5A97 R2.0
    Memory
    16GB DDR3
    Graphics Card(s)
    AMD Radeon R9 270X
    Screen Resolution
    1680x1050
    Hard Drives
    128GB SSD + 1TB HDD
    PSU
    Thermaltake Toughpower 750W
    Case
    Thermaltake Commander MS-I Snow Edition
    Keyboard
    Microsoft Comfort Curve 2000
    Browser
    Google Chrome
    Antivirus
    Avast
Sure it isn't fake? Lot of them out there.
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model
    Acer V3 771G-6443
    CPU
    i5-3230m
    Motherboard
    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
    Screen Resolution
    1600x900 pixels
    Hard Drives
    Samsung SSD 850 EVO 250 GB
    ADATA SSD SP900 128GB
    PSU
    90 watt brick
    Mouse
    Bluetooth
    Antivirus
    Comodo
    Other Info
    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.
I just made the HD Tune test on a Class 10 MicroSD card. Read transfer rate is 10.2MB/sec and access time is 0.85ms. This may serve for comparison.

PS - don't get confused by the funny colors. This is a high contrast theme.


Capture.PNG
 

My Computer

System One

  • OS
    Vista and Win7
    System Manufacturer/Model
    2xHP, 2xGateway, 1xDell, 1xSony
    Hard Drives
    5 SSDs and 12 HDs
Thought I ate a funny brownie. :)

That speed is spot on for a class 10.
 

My Computer

System One

  • OS
    Windows 8.1 Pro 64-bit
    Computer type
    Laptop
    System Manufacturer/Model
    Acer V3 771G-6443
    CPU
    i5-3230m
    Motherboard
    Acer VA70_HC (U3E1)
    Memory
    8GB DDR3 PC3-12800 (800 MHz)
    Graphics Card(s)
    HD4000 + GeForce GT 730M
    Sound Card
    Realtek High Definition Audio
    Monitor(s) Displays
    17" Generic PnP Display on Intel HD Graphics 4000
    Screen Resolution
    1600x900 pixels
    Hard Drives
    Samsung SSD 850 EVO 250 GB
    ADATA SSD SP900 128GB
    PSU
    90 watt brick
    Mouse
    Bluetooth
    Antivirus
    Comodo
    Other Info
    Asus RT-AC56R dual-band WRT router (Merlin firmware). Intel 7260.HMWWB.R dual-band ac wireless adapter.
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