Actually IVB's TIM (thermal interface material) problem is no problem in most cases, including video playback with madVR, unless you overclock a Core i5/i7 "K" processor. Here is my own test results:
- Core i5-3570K / Intel HD Graphics 4000 (both @default clock)
- Scythe Shuriken with the stock fan (100mm 2200rpm PWM) @1300rpm (50%; close to silent); the cooler is very modest, Big Shuriken (for ML03/GD04/GD05) or Geminii S524 is much better.Running Prime95
(CPU stress test):
The average core temperature reaches 65°C
and never goes up, with CPU clock 3.6GHz, GPU clock 0.35GHz (no throttle down)Running FurMark
(GPU stress test):
The average core temperature reaches 45°C
and never goes up, with CPU clock 2.1GHz, GPU clock 1.15GHz (no throttle down)Running Prime95 and FurMark simultaneously
The average core temperature reaches 75°C
and never goes up, with CPU clock 3.6GHz, GPU clock 1.15GHz (no throttle down)
Remember that IVB's TJ Max (maximum operating temperature before throttling) is 105°C.
There is a huge discrepancy between "CPU" temperature (the temperature of the center of the heat spreader) and "Core" temperature; the former could be as much as 30°C lower than the latter, perhaps because of not so good TIM of IVB. When configuring SpeedFan, always trust only "Core" temperature.