NForce does not equal video card. A Nforce chip on your motherboard will not give you video out put. Some motherboards with Nforce chips might also have GeForce video cards built on but that is might.
Read more here
http://www.nvidia.com/page/nforce.html
With the second-generation NVIDIA nForce2 platform processors, NVIDIA has revolutionized desktop PC performance for gaming, home and home office, and business users. From enthusiasts who demand blistering performance to the mainstream users looking for a complete digital media experience to corporate users who require scalability, functionality, and versatile display capabilities—NVIDIA nForce delivers. Look for both AMD-based PCs and motherboard solutions powered by an NVIDIA nForce2 platform.
Introducing the NVIDIA nForce2 Ultra 400 and NVIDIA nForce2 400
The NVIDIA nForce2 Ultra 400 incorporates dual 400MHz DDR controllers, delivering twice the bandwidth of typical DDR chipsets, an optimized 128-bit architecture, and 400MHz frontside bus (FSB) support for unparalleled performance. The NVIDIA nForce2 400 relies on a single 64-bit memory channel to deliver 400 MHz FSB and 400MHz DDR performance to the mainstream.
Granamere