Answer:
First and foremost, NVIDIA nForce3 Professional was designed specifically for the professional market by:

• Simplifying the IT manager's job by extending the NVIDIA Unified Driver Architecture (UDA) into the professional platform space.
• Designing in a network controller with enterprise-class features such as ASF, flow control, auto negotiation, and traffic prioritization to name a few.
• Making NVIDIA nForce3 Professional available in line with longer-term IT buying requirements.
• Certifying NVIDIA nForce3 Professional with NVIDIA Quadro® workstation graphics cards with all of the major workstation ISVs.