ASRock tops their own excellent 890GX Extreme3 with the brandnew ASRock 890GX Extreme4 motherboard. With this board overclocking is fun and makes overclockers hearts beating faster. The overclocking result became once again better, there are more voltage adjustments and also the equipment was extended. Thanks to the enclosed front USB3.0 panel it is now possible to insert USB 3.0 devices like for example USB3.0 memory sticks finally into the PC front. In this review, the new 890GX motherboard with onBoard HD4290 graphics, three PCI-Express slots, USB3.0, SATA3 and eSATA3 is overclocked up to the limit and compared with many other AMD Socket AM3 motherboards in the mainboard comparison.