Short answer: It depends on how hot the air inside the cabinet gets. The D315AOB (5G) has a fan and is rated up to 65 °C. The D315AOP-1 is fanless but is rated only to 50 °C, or 40 °C with the 64GB module. If the cabinet air could go above 40–50 °C, the D315AOB (5G) is the only one of the two rated for that.
Comparison profession... +1professional.avermedia.com ↗“thermal.cooling=Fan, thermal.max_operating_temp_c=65 °C”professional.avermedia.com ↗“thermal.cooling=Fanless, thermal.max_operating_temp_c=50 °C”
| D315AOB (5G) | D315AOP-1 | |
|---|---|---|
| Cooling | Fan | Fanless |
| Max operating temperature | 65 °C | 50 °C (40 °C with the 64GB module); depends on SKU or module |
| Min operating temperature | -25 °C | -25 °C |
| Weight | 1500 g | 1550 g |
What this means in a sealed cabinet:
- D315AOB (5G): It can run 15 °C hotter than the D315AOP-1, or 25 °C hotter than the 64GB version. In a sealed cabinet the fan only stirs the air already inside, so the 65 °C limit applies to the cabinet's inside air. A fan is also a moving part that may need maintenance over time.
- D315AOP-1: With no fan, there are no moving parts to wear out. But its limit is lower, and the 40 °C limit for the 64GB version is tight for a closed cabinet. profession...professional.avermedia.com ↗“40C)”
- Weight: The two differ by only 50 g, so weight shouldn't decide this.
How to choose: Find out the highest air temperature inside your cabinet. If it stays safely below 50 °C (or 40 °C for the 64GB version), the fanless D315AOP-1 works. If it could go higher, the D315AOB (5G) gives you more margin. AVerMedia's datasheets have the full cooling details: D315AOB and D315AOP-1.