nVidia typically produces graphics chips sold as part of products from Asus, PNY, and EVGA, among others. nVidia seemed to be a little taken aback by the HardOCP report, so it looks like Best Buy may have jumped the gun a bit. Apparently the new nVidia-branded graphics cards were set to launch on October 10, but Best Buy let them slip out a little early.
HardOCP has photos of the packaging and the full details.
[HardOCP via Electronista]