You should have not problems if set everything manual and decrease the ram speed as you overclock - and/or increase your voltage. Physically - feel the ram - if its cool - crank up the volts!
2.1v is sweet spot for ddr800
When have alot people who build their own and they really do not know what they are doing then u read misconceptions - in fact newegg is filled with people that say asus boards do not work with ocz. Well i used 6 different types of ocz with 5 different boards and they all work!!!
When make cheap ram they test it and sort and price it - sometimes they just stick different labels on it - its all marketing!
The fact is the 10 kinds of ocz ram, using as a example 533,667,800, are probably all the same stuff - they stick 2.1v on it - if it gets hot its 533 1.8v if its fast then they make 5-5-5-15 800 into 5-4-5-15 if its really fast then call 4-4-4-15 if its even faster then call it 4-4-3-15 all these are currently for sale on newegg as i type this.
Depending on your board, unless it nvidia with dial in, you may be forced if you over clock to choose nonstandard settings. This is where u need to adjust voltage and latencies.
3-3-3-8 533mzh ocz ram runs the same as 5-4-5-15 800mhz - if change the voltage from 1.8 to 2.1 and set the latencies. By the way if you can find the 3-3-3-8 it is cheaper faster!
Anyways lets say you overclocked and you can only choose 888 and 689 (i made these up i did to trouble to calculate actual true numbers) from 334 bus. if you choose 689 then u can lower the latencies if you choose 888 - it might even run - you must raise the latencies and/or raise the voltage.
Wow i hope that helps!!!