Gigastone 256GB Micro SD Card | 4K Video Recording | Compatible with GoPro, Action Camera, DJI, Drone, Nintendo-Switch | Up to 100/60 MB/s R/W Speed | MicroSDXC Memory Card UHS-I U3 A2 V30 C10 | Includes 5-Yrs Free Data Recovery Review

This card tests around 50MB/s Write, 90+ MB/s Read with Blackmagic Disk Speed Test but fails by around 15% when used in Insta 360 One X 14 -20 minutes in the "Insufficient Speed" recording. This camera records two files simultaneously at around 6MB/s each, but recording something else at the same time prevents the Gigastone from delivering the results it promised. After trying to contact customer service: no support available. They contacted me, asked what resolution I was recording the video…

Got this to test instead of other big brands as it was cheaper and can gladly say I'm glad I did. I used my Samsung Galaxy Tab E and downloaded several games and apps and they all ran faster than my old card. Then plugged into my new Nintendo Switch and all my digital games loaded with no issues and all games run much smoother than other brands games. This may be due to the A1 V30 rating, but I'm not an expert, all I can say is that I'm very happy with this purchase. Got 256GB A1 V30 U3 Class…

Received this as a card for my Nikon D7500 camera. I decided to save a few bucks on Sandisk, mainly because so many Sandisks you buy on Amazon are counterfeit. So maybe the Chinese wouldn't fake an unnamed brand. In general, the card worked well. Put it in card checking software and it will indeed have the memory it has. The read/write speed seems to be normal, although I'm not an expert at it. What matters is whether it worked for its intended purpose (photos and videos on Nikon), the answer…

Since you are probably skeptical, I heard about all the fakes myself, it seemed too good to be true! $35 is what the most decent 128s cost! But it was a rather expensive 256 according to the packaging! Well, the packaging was right! In a cheap USB 3.0 card reader, I first ran speed tests and got 37 reads and 33 writes, making it a U3 class card, and then had to insert and remove some files. I started BIG, this was an upgrade of my 128 Samsung evo U1 in my Switch. It currently had 115 gigabytes…