Whenever there's a new video card or processor, Maingear is almost always on the scene with an upgrade -- sometimes within seconds of its hardware partners. A plan to use NVIDIA's new GeForce GTX 650 and 660 graphics chips from day one proves that rule in style, although Maingear is going the distance with some incentives beyond just shiny parts. Along with making the mid-tier GeForce technology an option for every desktop, the PC builder is offering special GTX 650 and 660 versions of its F131 and Potenza gaming rigs that knock as much as $150 off the price. The base prices of $949 for the limited-run Potenza and $1,199 for the F131 keep either system in serious gamer territory and preclude us from calling them tremendous bargains. Nonetheless, it's difficult to grouse very loudly: it's not often that a price drop and a hardware upgrade walk hand in hand.