thanks. tbh i'd start out with whatever oc software your using, put the gpu to stock clocks, fire up furmark & Heaven, then slowly work the gpu's core clock up alittle at a time until you've reached the limit of what's achievable on stock voltage. once you've found core limit, i'd then set the core back to default & repeat the process using the memory clock. voila, mission accomplished. if you feel the desire to push voltage for a higher clock after that, go for it, but it's probably gonna void warranty if you screw up. enjoy.