Lexar Play 256GB microSDXC UHS-I Card, Compatible with Nintendo Switch, Up to 150MB/s Read (LMSPLAY256G-BNNNU)

Bought it on sale for upcoming steam deck, the performance is very inconsistent. I'm in the middle of copying over 500GB steam games to the MSD as I write this review, the peak write speed is about 73MB/S, however it fluctuates severely between sub 10MB/S and 73MB/S, in most of the time it stays at around just 12MB/S! The estimated data transfer time is 10 HOURS! Also the card gets hot during transfer to the point can actually scald you! I am not kidding!I bought this 1TB card because it was on sale thus 40-60 bucks cheaper than other brands and games usually don't require fast write speed so I bite the bullet, if you have the budget and can not stand such slow write speed might as well look elsewhere.

Nothing to not like except it came from America to get a great price but took longer to get here.

Stay away from Seller kellysufang who sells1tb lexar sd cards from China. After running several tests I uncovered it is a cheap and slow 64gb sd card. Proof added in pictures.

Formatted in less than 5 min from the steamdeck settings menu itself. 912gb available after format. Took roughly 5 min to transfer a 30gb game from the internal SD to the Micro SD. It did not get hot after transferring 15 games over. So far so good. (You will need to update each game once they are transferred over in order to play them - save files were all there)

Just got the Lexar 1TB microSDXC card in. As with any other storage device I purchase, I put this one through the same tests.First, I tested capacity to ensure the card wasn't an outright fake, which is increasingly common these days. F3 under Linux, or hwtest2 under Windows, seem to indicate that the storage claims hold true and that this card is not using a circular buffer to fake the storage capacity.Second, I tested read/write speeds. I tested with a number of devices (docks, card readers, etc.), under Windows, Mac, and Linux. In short: the claims made in the item description are outright lies. While buffered read/write speeds were acceptable, the true I/O of the device under perfect conditions topped out at about 40MB/s read, 32MB/s write. Random read/writes often fell below 12MB/s. Under real-world conditions, the card averages only about 20MB/s read/write. Far from the advertised 150MB/s.