 For example, a user who purchased 4 Titan X graphics cards in 2015 would have spent over $4000, even though next year's high-end graphics card, the GTX 1080, in 3-way SLI would offer a significant increase in performance at less than half the price.Gaming PCs use hardware accelerated video cards which offer high-end rasterisation-based rendering/image quality.The graphics card is the most important part determining the capabilities of a gaming PC.