Pureoverclock.com has completed an article titled: Connect3D X800 GTO

When testing this card, which is bases on R423 I noticed that clock for clock this card is faster than the Sapphire based R480. I tested this thoroughly to make sure there wasn't a driver issue or incorrect setting in place. I feel confident enough to state that R423 based X800 GTO's are faster than R480 based ones clock for clock.

Connect3D X800 GTO Review