I have always overclocked as much as possible. However, I just bought a HD7770, Gigabyte I believe, that was factory overclocked to 1050. I thought since it was factory overclocked already, it must be good for more, right?
Well I cant overclock the dam thing a lick, using either CCC or MSI afterburner. Even adding 5 more mhz causes an error message, hard lock-up, and I have to turn off the power manually and reboot. It is perfectly stable at the factory overclock though, never crashes.
Dont want to derail the thread too much, but is this normal for HD7770? I had expected to be able to overclock quite a bit. I think my power supply should be adequate. It is a newer Dell XPS with the 460 watt power supply. I know that is not the best, but I should think it would be more than adequate for this card. I believe they put in up to 7850 from the factory.