Support ASRock BCLK full range overclocking. - 4 x DDR3/DDR3L slots. - 1 x 24-pin ATX power port. - Quick OC button: +/- buttons are used to adjust the OC frequency. - Supports AMD Quad CrossFireX™, 4-Way CrossFireX™, 3-Way CrossFireX™ and CrossFireX™.
eBay