Review on SanDisk 128GB Extreme PRO SDXC UHS-I Card - C10, U3, V30, 4K UHD, SD Card - SDSDXXY-128G-GN4IN | High Capacity, Ultra-Fast, V30 Rated SDXC Card by Sameer Hilton

I was surprised to find this card at the same price as the Extreme Pro 95MB/s that has been available for a while. Almost twice the reading speed for the same price? Brilliant! It's not that fast. If you read the fine print on the SanDisk website or on the product packaging, you'll see that it requires proprietary technology to achieve the full 170MB/s read speed. Otherwise, it achieves the highest standard UHS-I speed of 90 MB/s reading and 80 MB/s writing. (It's called the default for some reason.) At first I thought the built-in card reader in my laptop just wasn't up to par, so I tried an external one, and the same result. It seems that the only devices capable of reaching these speeds are SanDisk's own USB 3.0 card reader and other certified/participating devices (which do not yet contain anything else). Normally I'd be upset about this, but at the time of writing this model costs almost the same as the 95MB/s model, just pennies more. So can't complain, it's not like I've been scammed to get more money, it's basically the same price, with the potential to read and write faster if you buy their USB card reader . I'm giving it three stars because it's misleading to print at 170MB/s when that's unattainable for 99% of customers. Otherwise it seems like a good card at the moment, until it suddenly dies, may I upgrade it to 4 stars in the future.