Basically, any Ti 4600 is going to perform about the same. And the Gainwards don't come pre-overclocked, as someone suggested. You just have to choose one based on price, included features, and possible overclockability if you're interested in that. But I don't think there's much overhead on the Ti 4600 for overclocking. I have the Chaintech version, which I got for $320. I like it for its looks and it performs great, but probably no better or worse than other versions.
<i>Money talks. Mine always likes to say "goodbye." :smile: </i>