The A7V uses the KT133 chipset...don't expect much past 107fsb...105 is about average. You CAN shoot for a bit more by cooling your PLL as described in
this article .
Most overclockign will come from the multiplier though, and upping the voltage will yeild good results.
I'd reccommend upping your voltage, but if you do so using the jumpers, then you should be running BIOS version 1008 or higher...if not then you will have stability issues if you change from the default Vcore.
What do you mean by standard cooling? If its pretty basic cooling, I'd recommend getting something a bit more overclocking friendly, just check the heatsink statistics on the main page.
BTW, you mentioned getting past the 900mhz mark. Well, if you are at 100fsb and a 10x multiplier, thats 100x10=1000mhz. So, you probably aren't running a 10x multiplier.
If your cpu is unlocked (L1 bridges are connected) then you can change your multiplier.
I do not recommend using the Jumperless mode on this board. The A7V will have a higher and more stable overclock when you use the jumpers and dip switches.
Good luck!
Mike