ZOTAC has gone with the Phoenix Award Modular BIOS version 6 which is quite simple. This BIOS has been used quite a lot, but hopefully for not much longer. EFI is around the corner.
ZOTAC hides its overclocking options under the Frequency/Voltage Control Menu.
FSB Frequency: 200 - 600 in 1MHz Increments
PCIE Frequency: 100 - 150 in 1MHz Increments
Memory Voltage: 1.9v to 2.2v in 0.1v Increments
Chipset voltage: 1.2v to 1.35v in 0.05v increments
Unfortunately being that there's no CPU voltage control or multiplier adjustments, as well as no control over the HT links, we didn't get past 210MHz FSB. However, this board is not aimed at the overclockers; NVIDIA's chipsets arn't rated for high FSBs in the lower price bracket.
Important Editor Note: Our maximum overclocking result is the best result we managed in our limited time of testing the motherboard. Due to time constraints we weren't able to tweak the motherboard to the absolute maximum and find the highest possible FSB, as this could take days to find properly. 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. "Burn-in" time might also come into play if you believe in that.