# SanDisk 512GB Extreme PRO SDXC UHS-I Memory Card Review
I picked up the SanDisk 512GB Extreme PRO SDXC UHS-I Memory Card (C10, U3, V30, 4K UHD, SD Card, SDSDXXD-512G-GN4IN) for my video production work here in Houston, and I wanted to share what I’ve found after putting it through real-world use. As a Marine veteran turned entrepreneur, I don’t waste time on products that don’t deliver, and I’m not going to waste your time with false praise either. This card cost me $86.99, which is reasonable for what you get, but the real question is whether the performance justifies the price tag and the SanDisk brand reputation.
My primary use case involves shooting 4K video content for my business, and the specs on the SanDisk 512GB Extreme PRO SDXC UHS-I Memory Card (C10, U3, V30, 4K UHD, SD Card, SDSDXXD-512G-GN4IN) looked promising on paper. The V30 speed class means a minimum sustained write speed of 30 MB/s, which is the baseline you need for uninterrupted 4K recording. The UHS-I interface supports faster data transfer rates, which matters when you’re offloading footage to your computer and running on a tight production schedule. I’ve used cheaper cards befor