Im looking for a micro sd card for a fan less pc i am going to use to run my Ghost Gunner mill and want to have local storage that i can store all of my cutting files and various other things involved with milling stuff.  Im looking for something that has either 512 gb or 1tb of space before formatting and would like it to be fast enough to possibly run applications from.  Who knows what would fit the bill?

Look at SAN disk Extreme.   Has the speed and a capacity you are looking for.

1TB card is about $170 on Amazon.

SAN Disk Extreme 1TB

a few things.
WD actually makes that.
you can find them on their site.
you can get 15 percent off if you send in an old storage device that doesn't work anymore.
it is their recycling program.
I generally have a stack of HD's I intend to destroy for magnets, but they send a pickup label and then mail you a 15 percent off coupon.