SanDisk's Ultra SDXC and microSDXC memory cards make their way through the lab. Follow on as Tyler puts them through their paces to see how they perform.

The SanDisk Extreme microSDXC UHS-I memory card series are said to be the perfect companion for your smartphone, tablet and cameras. With read speeds of up to 80MB/s and write speeds of up to 50 MB/s the 64GB card also just happens to be the fastest 64GB microSDXC card available.

This card is perfect for the Mavic Pro 2 which is the reason I purchased. Slower cards cant handle the 4K footage or Raw files to be able to covert to hyperlapses. This card can handle it all and at the time I purchased it, it was on sale for $60 which is a deal because I tried finding it locally...

I bought this memory card to hold photos since I am a photographer. It is perfect! I can keep all the images I need on it and if down the line I need to add more, I can easily do that. It works great and I am glad I purchased it at Office Depot!

Tried the SamsunX EVO 32 GIG and it didn't last 3 months and my phone did not work well with it. This stick does well with my SamsunX Note 4. I am happy.

Plugged into my phone and bumped my storage up to 64 GIGS to add to my phones 32 GIG; It is nice to have some extra room

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Okay, we've been using Sandisk products for many years. Our oldest card was 32kB (not MB or GB) and cost $69. We've had great results with their products (except some fake ones) over the years and this one is no exception. It's very fast (over 100MB/s in testing) and has been very reliable in use.

Thought at first I had made a mistake, when my devices wouldn't read the card. So, I put it in my computer card reader to see if it would detect it. It could, so then I just reformatted it a different format. Then used in my tablet again and there was no problem accessing it.

I purchased three of these for Samsung S7 Samsung S2 Samsung Note2 They all worked fine, except I had some trouble with the Note-2 I had to put the disk in my windows PC first and format it as windows recommended. Then the note2 recognized the disk once reinserted into the phone.

This MicroSD worked perfectly straight out of the box in my Samsung Galaxy Note 10.1! The official Samsung website says it only supports 32GB microSD, but others on the internet say you can use the 64GB if you format it properly. I didn't need to do any formatting and the card works perfectly!

It appears to do what it is supposed to. Its an SD Card,slotted easily into my new phone no problem. The real test will be if I fill up my phone memory and then fails.