Pureoverclock.com has just completed an article titled: Gainward Ultra 3500 PCX 7800 GTX Golden Sample: Single & SLI

Gainward kindly supplied two 7800GTX Golden Sample cards to
allow us to test the performance in an SLI configuration. That's worth of pixel pushing power staring back at ya! The Golden Sample moniker is only used for Gainward's top of the range boards which are factory clocked with higher core and memory speeds. Make no mistake, pair two of these up and you're sitting pretty for at least 2 years".

Gainward Ultra 3500 PCX 7800 GTX Golden Sample: Single & SLI