I've been having trouble finding good advice for this, so any suggestions would be greatly appreciated.
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)
This looks really hot to me. My best guess as to what's happening is that the GPU is getting really hot decoding the video, along with the rusty old PSU supplying power to it, and because the CPU is idle (GPU doing all the work), the only fan (I.C.E.) is blowing really low RPM and not really circulating enough air. So with the case on it overheats.
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!