SanDisk Extreme 2TB microSDXC Performance
As a quick capacity check, we can see our exFAT formatted microSDXC card is 1.86TB.

Like the 1.5TB Ultra drive, we tried it in the Insta360 X4 an 8K 360 degree camera.

Unlike the 1.5TB Ultra drive, this 2TB V30 drive does not give us a warning at 8K 30fps. Instead, the camera reports it is ready to go.

Copying data from an internal SSD to the SanDisk Extreme 2TB, we got 55-60MB/s.

Compare that to the 1.5TB SSD, and you will immediately see the difference in consistency.

On the return trip, copying the 8K video back to the SSD (the folder was called SanDisk 1.5TB ha!) The speed was very consistent, albeit not outstanding.

The bigger use for this is perhaps as a storage device for smaller systems like the NVIDIA Jetson Orin Nano where space is at a premium. The A2 rating tells us this is designed to run applications.

This is not fast enough for faster applications that need SSDs, nor even fast 8K cameras that require at least V90 cards. Still it is not bad.
Final Words
It is fair to say this is a tiny device with big capacity. The idea of storing 2TB in something so small is tantalizing. For mobile devices and others that use microSDXC to allow for storage expansion while minimizing physical space, having a fast 2TB device is great. Of course with great power comes great responsibility. These are so small, and store so much data, you could easily lose eight Apple Mac Mini M4 base model computers worth of data by misplacing something the side of a fingernail. If you have ever lost a SD or microSD card, then this might make you nervous.

Still, it is really cool to see 2TB in such a small package, and in one that offers not just more capacity (2TB versus 1.5TB) compared to the Ultra drive we reviewed previously, but also faster speeds for running applications. That speed, of course, comes at a cost adding 33% to the capacity but more than doubling the price over its 1.5TB sibling.
Where to Buy
We purchased our 2TB card during a sale on Amazon (affiliate link.) You can also find the 1.5TB Ultra card on Amazon (affiliate link) along with theĀ 512GB Extreme using this Amazon affiliate link.
Why does the printing on the surface of the card look like it was done with a mid-1990s bubblejet printer? I’ve always associated that type of low quality printing with fakes, so I wonder why they use it on real cards? Is it due to the printing process, or is there a serial number or something embedded in the pattern?
@Malvineous, I also observed the same.
A 4TB microSDUC UHS-I memory card is expected at some point in 2025, according to SD7.1 from sdcard org; the limit is 128TB, which won’t be reached anytime soon.
I love this card but unfortunately many smartphones was no longer provide micro sd card slot
@Ga1611
All low and midrange phones do have microSDslot.
Is a device storage capacity limited by hardware or software example device has limit of 1tb sd card cand device software be upgraded to 2tb
Not all phones dont have micro sd slot, note 20 ultra has a micro sd slot, mine runs a sandisk 1tb card well
It’s not tiny, it’s the same size as all other microSD cards; otherwise, it would not be one. STOP PAYING YOUR FREELANCE “JOURNALISTS” TO PRODUCE GARBAGE THAT WOULD SEE THEM FAIL A SEVENTH GRADE WIRING ASSIGNMENT!