We don't know when the screenshot was taken, but why would it be taken much later than right after the end of the 3DMark06 run ?
The card is at idle now, but the temp it reached under load, probably wasn't much higher IF the screenshot was taken right after.
Still, it's probably fake as was already noted.
To scale and position all the windows for the screenshot? They may not even have had all the programs or windows open during the run either.