It definitely works. It appears to have the most effect on my 7970 in terms of boosting frames with Hyperformance, but it works for both GTX 670 and HD 7970 in terms of virtual sync and reducing GPU load and temperatures. I can only use the trial version of MVP on my second computer (Z68 socket), so I switched to the basic Virtu for temperature/noise reduction. Using MVP on the main one (Z77). It's a bit buggy with some games, where they won't start if you have Virtual Sync enabled (or some other setting - trial and error), but for the most part works fine. I tried it a while ago first and was underwhelmed, but I definitely see its value now.
I installed Lucid Virtu MVP from my motherboard's site, ( i have a asus sabertooth z77) but when i want to install the file, it says Integrated graphics device was not found.
What should i do?