Funtux
Power Member
The 4830 supports Powerplay which underclocks the card in 2D mode to save power. I know that Sapphire, Powercooler, ASUS, and HIS models all support Powerplay. But MSI's doesn't. This is a BIOS feature which is missing on the MSI card.
As far as fan speed control it seems that not all vendors support it on the 4830, but most do. All 4830 models appear to be using a 2-wire fan. So the fact that MSI isn't using a 4-wire (PWM) fan I think is irrelevant (4850's use 4-wire which allows for RPM measurement and easy fan control). Fan speed control, like Powerplay, is also a feature that needs to be written to the BIOS, but seems to be missing on the MSI card
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