Enthusiast gamer PC maker Maingear is launching a series of desktop computers that won’t bust a gamer’s budget. They’re still high-end machines, but they take advantage of the high-end 3D graphics of Nvidia’s new GeForce GTX 660 Ti graphics chip that debuted today. Nvidia’s chip goes into a $299 graphics card that are far cheaper than the company’s high-end $999 GeForce GTX 690 dual-card options.

Kenilworth, N.J.-based Maingear is a boutique maker of gaming rigs, including desktops, notebooks, and workstations. The company says the Kepler-based Nvidia chips hit the sweet spot for gamers in terms of performance, power efficiency, and affordability.

The 660 Ti will be in all Maingear custom desktops, and the company is also launching two limited-edition F131 and Potenza class systems with the 660 Ti.

“Nvidia’s Kepler architecture is more than robust,” says Wallace Santos, the chief executive and founder of Maingear. “It’s the creation of a standard. With the debut of TXAA — which smooths out jagged lines — across the Kepler family, gamers will find a noticeable improvement in graphics for the latest games. I feel that our customers should be able to experience that without breaking the bank.”

Several other rival computer makers will launch Nvidia-based computers today as well. But it won’t hurt to be in the front of the pack.