Visiontek has released a new Radeon HD 4670 card, costing approx. $300 USD. The price tag is no joke, but neither is its potential claim to fame: built-in support for four monitors, each capable of resolutions up to 2560x1600 pixels. All this through four dual-link DVI ports, two independent display controllers, and all on a single PCIE x16 slot. We investigate to see if it really is all that it's crack up to be