The build is a ~3yo Shuttle S33G5 with a Q8300 2.5GHz C2Quad + 4GB DDR2 and a 5.25" SATA Bluray drive. I recently added an Asus fanless GT430 and replaced the magnetic drive with a 120GB Sandisk SSD. It sits in a closed but fan vented media cabinet - the space is 9"H x 17"D x 27"W. I'm guessing, but temps inside the cabinet are probably around 80-85F.
The software setup is Windows 7 MC + MediaBrowser + MPC-HC + LAV Filters + madVR. Recently, watching a 1080p movie with the Shuttle's case on caused the system to overheat and restart twice during the movie. A second test with the case off was fine, and I grabbed HWMonitor data as it was finishing. Although it doesn't list CPU Core temps, they were all below 60°C.
- Hardware monitor ITE IT87
Voltage 0 1.17 Volts [0x49] (CPU VCORE)
Voltage 1 1.26 Volts [0x4F] (VIN1)
Voltage 2 3.28 Volts [0xCD] (+3.3V)
Voltage 3 4.92 Volts [0xB7] (+5V)
Voltage 4 11.97 Volts [0xBB] (+12V)
Voltage 5 -2.94 Volts [0x2E] (-12V)
Voltage 6 -7.62 Volts [0x77] (-5V)
Voltage 7 4.92 Volts [0xB7] (+5V VCCH)
Voltage 8 3.22 Volts [0xC9] (VBAT)
Temperature 0 57°C (134°F) [0x39] (TMPIN0)
Temperature 1 66°C (150°F) [0x42] (TMPIN1)
Fan 0 2192 RPM [0x134] (FANIN0)
Fan PWM 0 0 pc [0x0] (FANPWM0)
Fan PWM 1 56 pc [0x48] (FANPWM1)
Fan PWM 2 99 pc [0x7F] (FANPWM2)
Hardware monitor ACPI
Temperature 0 40°C (104°F) [0xC3C] (THRM)
Hardware monitor NVIDIA NVAPI
Voltage 0 0.99 Volts [0x3DE] (VIN0)
Temperature 0 71°C (159°F) [0x47] (TMPIN0)
Obviously I need to replace the PSU since it gets really hot and is responsible for most of the system noise. But will that be enough to keep this cool? I have some other ideas, but I'm not sure what will be the best move - I could mod in a top or side exhaust fan, replace PSU with picoPSU (will that be enough power?), swap everything to a new case with better airflow (what will take the Shuttle mobo?). Or anything else within reason (not replacing all the components). If you have tackled a similar problem please enlighten me!