How to verify the Capacity and Speed of the memory card?
1). Please use quality USB 3.0 card reader to verify all memory card by H2testw on PC. Real memory card should pass H2testw with no error.
2). Please don't use cheap card reader to test the SD card, speed of the SD card will be reduced by low quality card reader.
3). The SD memory card speed is greatly affected by card reader and the capacity you choose , USB port ect. Low quality device will 100% slow down card speed.
About capacity:
64GB=approximately 58GB-60GB
128GB=approximately 115GB-119GB
256GB=approximately 230GB-235GB
512GB=approximately 460GB-465GB
Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB
Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;
So there are some differences between display capacity and nominal capacity of flash memory products.
Package Contents:
1 x KODAK U3 Micro SDXC card
with Retail package
How to verify the Capacity and Speed of the memory card?
1). Please use quality USB 3.0 card reader to verify all memory card by H2testw on PC. Real memory card should pass H2testw with no error.
2). Please don't use cheap card reader to test the SD card, speed of the SD card will be reduced by low quality card reader.
3). The SD memory card speed is greatly affected by card reader and the capacity you choose , USB port ect. Low quality device will 100% slow down card speed.
About capacity:
64GB=approximately 58GB-60GB
128GB=approximately 115GB-119GB
256GB=approximately 230GB-235GB
512GB=approximately 460GB-465GB
Vendors are using Flash memory decimal arithmetic: 1 MB = 1000KB, 1G = 1000 MB
Calculated, operating system with binary arithmetic: 1 MB = 1024KB, 1 GB = 1024 MB;
So there are some differences between display capacity and nominal capacity of flash memory products.