With just 4 pixel pipelines, the 6200 series forms NVidia's value/budget (low-end) product. The 6200 omits memory compression and SLI support, but otherwise offers similar rendering features as the 6600s. The currently shipping 6200 boards are based on the NV44 core (s), which is the final production silicon for the 6200 series.
However, at introduction, production silicon was not yet ready. NVidia fulfilled 6200 orders by shipping binned/rejected 6600 series cores (NV43V). The rejects were factory modified to disable four-pixel pipelines, thereby converting the native 6600 product into a 6200 product. Some users were able to "unlock" early 6200 boards through a software utility (effectively converting the 6200 back into a 6600.) Not all NV43-based 6200 boards could successfully be unlocked, and as soon as NV44 production silicon became available, NVidia discontinued shipments of downgraded NV43V cores.
