5. Thermal Specifications
The high performance devices installed on the Intel® FPGA PAC N3000-N require server based forced air cooling to maintain proper operating temperature. This section provides air flow requirements for the Intel® FPGA PAC N3000-N . Intel® recommends that sufficient air flow be provided to the Intel® Arria® 10 GT FPGA to maintain junction temperature below 95 °C.
Figure 7. Air Flow Pattern
| Term | Description |
|---|---|
| Cubic Feet per Minute (CFM) | Volumetric airflow rate, in cubic feet per minute, of air passing through the PCIe faceplate of the Intel® FPGA PAC N3000-N . |
| Tj | FPGA Junction Temperature |
| TLA |
Local Ambient temperature. Temperature of forced air as it enters the Intel® FPGA PAC N3000-N .
Note: In many systems, this is higher than the room ambient due to heating effects of chassis components.
|
The Intel® FPGA PAC N3000-N uses a passive heatsink. The server must provide sufficient forced airflow to keep the FPGA and board components within the following operating conditions:
| Parameter | Value |
|---|---|
| Intel® Arria® 10 FPGA Thermal Design Power | ≤ 71 W |
| Intel® FPGA PAC N3000-N Thermal Design Power | ≤ 131 W |
| Recommended FPGA Maximum Operating Temperature* | 95 °C |
| FPGA Tj Max / Thermal protection shutdown | 100 °C |
| Max TLA (Forward Airflow) | up to 61 °C depending on cooling flow available |
| Max TLA (Reverse Airflow) | up to 61 °C depending on cooling flow available |
| Recommended Board Max Operating Temp* | 95 °C |
| Board Tj Max / Thermal protection shutdown | 100 °C |
| Min TLA | -5 °C1 |
| Max QSFP Power (each) | 3.5 W |
| Max 12 V PCIe* Slot current* | 5.5 A |
| Max 12 V AUX current* | 6.25 A |
| Max FPGA core current* | 50 A |
* Values can be read at runtime using the fpgainfo command.
Note: The Intel® FPGA PAC N3000-N supports cold start from 0 °C and an operating temperature range of -5 °C to +55 °C, according to Telcordia* GR63-CORE and GR-3108 Class 1 range. Altitude simulation testing may be performed using a temperature compensation method of 1 °C for every 1000 feet up to 61 °C. Intel® FPGA PAC N3000-N supports inlet temperatures (during operation) of less than 0 °C. The minimum inlet temperature depends on fan speed control settings of the host server as well as the power scenario that needs to be supported at lower inlet temperatures. It is expected that a -5 °C inlet operating temperature would be supported as the operating temperature of the FPGA and other components should be over 0 °C due to component operational heating.
Note: Intel® Arria® 10 FPGA total power consumption cannot be obtained from on-board BMC sensors. Use the Intel® Quartus® Prime Power Analyzer to verify compliance with this value for your design.
1 Actual FPGA assumed to be greater than or equal to 0 °C.