Yes, you have to do some tricks to get the memory configured. Use a program like FastExec to to this because the bundled software does not work with later versions of the OS (3.x). Once you get it configured, it is an excellent card. I probably still have my settings around somewhere...
I bought one of these in the late '90s for about $200 and sold it a few years later for about the same amount when I upgraded. It is probably worth at least the same amount now with the shortage of accelerators out there.