Thanks Teb,
seems that you have to be a little careful with that card (there are two versions, one fast, one not so fast):-
https://www.forbes.com/sites/jasonev.../#47baa35393d9
The one you point to is of the faster variety (GDDR5)
.
EDIT: @videoh
You might also want to check that resultant variable name (assuming user adjustable in some way), is a legal variable name, ie '_' or alpha for start character, and thereafter digits also allowed.