PureOverclock posted a review on the MSI 5830 Twin Frozr II 1GB

Overclocking a graphics card can be a bit daunting, as the returns typically aren't much worthwhile. But we have an exception today: the MSI 5830 Twin Frozr II 1GB. MSI has taken the 5830, installed a custom heatsink with heatpipes and dual fans, used some military-grade components in its construction, and allowed voltage tweaks for serious overclocking. The result? We won't fully tip our hand just yet, but let's say that we managed to pull down some serious numbers.

MSI 5830 Twin Frozr II 1GB Review