I picked up the Sapphire passive 5450 earlier this week. I have only had time to play with it for about and hour. I was seeing temps upwards of 80c. I was also getting a lot of VPU recoveries and freezes. I assumed it was because of the temps or the drivers. I have a low profile case, and this card fits in between two larger Hauppauge 2250 tuners, so it doesn't get a lot of air moving over it. I am worried about the excess heat affecting the two tuning cards surrounding it.
I am considering returning it and taking my chances with a different maker that puts a small fan on it.
I am also wondering if anybody else is seeing VPU recoveries with this card? I was running 10.2 cat. drivers.
I will definitely play around more this weekend. Maybe I just got a bum card.