TeamGroup High Endurance V30 SDXC 256GB review

Memory (DDR4/DDR5) and Storage (SSD/NVMe) 357 Page 2 of 4 Published by




In the way video bitrates and memory card write speeds are communicated, there is a slight disparity that can cause a lot of confusion. When it comes to video, bitrates are measured in Mbps (megabits per second), whereas write speeds on memory cards are measured in MB/s (megabytes per second). What kind of difference do a few letters in the capitalization make? Megabits (Mb) versus megabytes (MB)– what sort of difference do a few letters in the capitalization make? Actually, there is a significant difference.

1 Megabyte is equal to 8 Megabits.

In memory card terms, this means that say a maximum bandwidth of 100Mbps is actually 12.5MB/s (100/8 = 12.5), rather than the advertised 100Mbps. In case it was unclear before that a U3 card's 30MB/s (megabyte) minimum write speed was insufficient, the reality is that 50MB/s (400 Mbps) is more than sufficient for any Ultra HD recording unit. That is nearly 5x the transfer speeds of standard SDHC cards, when used with UHS-I compatible devices. The performance is easy enough to test as there is any software available that can measure sustained bandwidth, we'll simply grab a USB 3.2 port with a USB 3.2 card reader attached to it, which will show maximum throughput combined with the right software stress tests.

Product Specifications

Model High Endurance Micro SDXC UHS-I U3 V30
Capacity 64GB / 128GB / 256GB
Voltage 2.7V ~ 3.6V
Operation Temperature -25˚C ~ 85˚C
Storage Temperature -40˚C ~ 85˚C
Data Transfer Rate Read/Write: up to 100/50MB/s
Weight 1g
Dimensions 15.0(L) x 11.0(W) x 1.0(H) mm


64GB: 10,000hrs 26Mbps (Full HD 1920x1080p)
128GB: 20,000hrs 26Mbps (Full HD 1920x1080p)
256GB: 40,000hrs 26Mbps (Full HD 1920x1080p)

Operating System Micro SDXC
  • exFAT format
  • Supports only products with the Micro SDXC logo or slots complying with Micro SDXC memory cards.
  • Supports only products with SDXC logo or slots complying with SDXC memory cards. (adaptor required)
Warranty 2-year limited warranty
The endurance rating is a little tricky though. listed at 40,000hrs 26Mbps (Full HD 1920x1080p). A value that says very little TBH.

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