As others have stated, it's small, probably a bit smaller than SFO. IIRC, there are two rooms - one main room to your right as you enter, with the bar at the end, and a smaller, slightly quieter room at the other end to your left. Think the computer room is at the left end, too. Didn't see where the conference room was.
Here's the relevant info from the old RDU AC webpage (no longer available):
Club Amenities
Seating for 82, eight work desks, two Lenovo ThinkCentre computers with complimentary high-speed Internet access, complimentary local phone service (8), AT&T® equal access phone service with data ports (15), complimentary copier, complimentary use of laser jet printer, message services, and FedEx® drop-off and pick-up service. Morning breakfast
items, cheese and crackers in the afternoon and full-service cash/credit bar.
Conference Rooms
One conference room with seating for up to 10. The room is equipped with presentation board, speakerphone (with data port).
Complimentary coffee service is available upon request.