I wouldn't have tried the half-height, there have been other single slot that would be better, like perhaps those from a GT240 like EVGA's 512-P3-1242-LR Superclock with a 70W TDP. But what really is strange is the V3900 pushs it's max <75W through a 118 mm² die, while the GM107 is 148 mm², I would have thought it would work better, although without the baseline V3900 we can't see if it is or not. I suppose we can use your review of this V3900 two years ago where it was 37.4 on the Perlin noise loop, while there was no temps provided. It’s interesting that even with what can be determined as a faster fan speed, and what should be a similar actual power consumption figures, the GM107 rapidly jumped to 80°C and counteracts its’ clock speed to hold their. What this really says is the 750Ti will needing some exceptional engineered solutions to achieve both half-height and low-profile and make it HTPC palatable.