It does not uprez, AFAIK. I have one (a Multibridge Extreme), but I’ve never installed it. In fact, if you are interested, I will sell it cheap in the box. The cross converting was very appealing to me, as well as the monitoring using the DVI connector, but I ended up re-using the Decklink card and HD Link that we already had in another computer. Then ( two years ago) it made a lot of sense to use the Apple 23 inch monitor as an HD monitor. Now that HD monitors have come down in price, I don’t think it looks so appealing. I believe there are JVC monitors at around 24″ that will give you HD-SDI, SD-SDI, component and composite, all for less than $2500.
If you are interested in the Mult Extreme, give me a call at area code Four Zero Eight 387 X 3226.
Paul