(adsbygoogle = window.adsbygoogle || []).push({}); Hey people. I've been trying to overclock my HD7670M for the past 3 days. I saw people getting stable 875ghz on core & 1000+ memory, i don't even know how that's possible... every time i put my core speed at 770+, it will freeze my laptop. Also, when i OC my card to 770core & 960memory, i will be stable while running benchmarks and surfing the web. But as soon as i start gaming for a few minures, it will just make my screen go colourful and full of vertical lines. PLEASE HELP ME.

I expect that they're accounting for the technologically incompetent who may forget about the wattage required by other parts. 500W is the absolute most you'd ever need, other parts taken into account. Realistically you'll never get close to that with one card.