It depends on what you want to connect to the tuner card as a source.
There are different types of Digital standard, a cheap card will be limited to maybe one or two digital standards that are used on broadcasting distribution formats.
Here are the examples of the DVB standards in use.
Satellite: DVB-S, DVB-S2 and DVB-SH
DVB-SMATV for distribution via SMATV
Cable: DVB-C, DVB-C2
Terrestrial television: DVB-T, DVB-T2
More expensive TV cards support more formats of course.
Most if new should come with 64bit and 32bit drivers.
It all comes down to the source you intend to plug into the tv card, and you making sure the card has the ability to decode the source standard your feeding it cathyfallis. Hope it helps.
Btw. Cable and Sat enabled cards, High end ones at a High price come with a Cam cradle, its a slot to hold say the smart card out of a Sky box, or for example a cable receiver box. Without the card and cam Cradle to hold the smart card channels will not be decoded as decryption is done through the smart card.
I forgot to say but not sure some smart cards can be locked or matched to what we call the MAC address of sky or cable box, paired together.
for obvious reasons. So there can be a chance the smart card will refuse to work say in a TV tuner card due to a Mac Miss match as a Mac an be unique to a box and card paired together only.
Sorry if this is a bit long but I had to arm you with the Information.