ASRock's BIOS layout hasn't changed at all over the past two years. Using the Award 6 BIOS in tab menu design, those who know the Intel Reference boards or ASUS boards will know this menu too well. All your overclocking options are under the advanced tab.
CPU Frequency: 150Mhz to 400Mhz in 1MHz Increments
PCIE Frequency: 75MHz to 200Mhz in 1MHz Increments
Processor Voltage: 1.1v to 1.45v in 0.025v Increments
DRAM Voltage: 1.8v to 2.05v in 0.05v Increments
Unfortunately we had a very bad overclocking experience with this board, though admittedly it's not designed to break any records. We only managed to increase the FSB by 20MHz to a total of 220MHz, even then it became unstable in some tests. We updated the BIOS to the latest available but still no help. Without any chipset voltage adjustments it seems the GeForce 7050 is a bit too warm running to be able to overclock very well.
Important Editor Note: Our maximum overclocking result is the best result we managed in our limited time testing the motherboard. Due to time constraints we don't have enough time to tweak the motherboard to the maximum and find the highest possible FSB as this could take days to properly find. We do however spend at least a few hours overclocking every motherboard to try and find the highest possible overclock in that time frame. You may or may not be able to overclock higher if you spend more time tweaking or as new BIOS updates are released or "burn in" time might come into play if you believe in that.