Home > Servers > PowerEdge Components > White Papers > Dell 15G PowerEdge Acoustical Experience and Dependencies > PowerEdge R750
Dell PowerEdge R750 is a rack-mount server whose acoustical out ranges from that appropriate for an office to that of data centers. Acoustical performance is provided in terms of five configurations: Minimum, Typical-1 2.5”, Typical-2 3.5”, GPU configuration, and NVMe Box. Configuration details are provided in Table 25 for Minimum, Typical-1 2.5”, Typical-2 3.5”, GPU config, and NVMe Box configurations; acoustical performance data for these configurations are in Table 26.
Although the R750 is designed for use in data centers, some users may prefer to use it in a quieter setting. Tips for acoustically sensitive environments can be helpful for such a situation. Note however that in most cases, the idle air mover speed of the system cannot be lowered without changing the configuration of the system, and sometimes even a configuration change may not reduce idle air mover speeds.
Configuration | Minimum | Typical-1, 2.5” | Typical-2, 3.5” | GPU config | NVMe Box |
CPU Type | Intel Bottom Silver | Intel Low Gold 5 | Intel Low Gold 5 | Intel Low Gold 5 | Intel Top Bin |
CPU TDP | 120W | 150W | 150W | 165W | 270W |
CPU Quantity | 2 | 2 | 2 | 2 | 2 |
RDIMM Memory | 8GB, DDR4 | 16GB, DDR4 | 16GB, DDR4 | 16GB,2667MHz, DDR4 | 8GB, DDR4 |
Memory Quantity | 8 | 8 | 16 | 8 | 32 |
Backplane Type | 3.5" x8 BP | 2.5" x16 exp BPBP | 12x 3.5" BP + 2x 2.5" Rear BP | 2.5" x16 exp BP | 2.5" x24 exp BP(NVMe) |
HDD Type | SATA 3.5” 4TB | SAS 2.5" | 12x3.5" front 12TB, 2x2.5" rear SSD | SAS 2.5" | X |
HDD Quantity | 2 | 8 | 12 + 2 | 16 | X |
Flash Drives | X | X | X | X | PCIe SSD |
Flash Quantity | X | X | X | X | 24 |
PSU Type | 800W | 800W | 1400W | 2400W | 2400W |
PSU Quantity | 2 | 2 | 2 | 2 | 2 |
OCP | 2x10G | 10/25 2-port | 10/25 2-port | 10/25 2-port | 2x25G |
PCI 1 | X | 2-port 25Gb | 1-port 10Gb | X | 100Gb PCI |
PCI 2 | X | 2-port 25Gb | 1-port 10Gb | GPU | 100Gb PCI |
PCI 3 | X | X | X | X | X |
PCI 4 | X | X | X | 2-port 25Gb | X |
PCI 5 | X | X | X | 2-port 25Gb | X |
PCI 6 | X | X | Adapt H745 | X | X |
PCI 7 | X | X | X | GPU | X |
PCI 8 | X | X | X | X | X |
PERC | Software Controllers | Front H745 | Adapt H745 | Front H745 | Software Controllers |
Configuration | Minimum | Typical-1, 2.5” | Typical-2, 3.5” | GPU config | NVMe Box | |
Acoustical Performance: Idle/ Operating @ 25 °C Ambient | ||||||
LwA,m | Idle | 4.6 | 4.9 | 6.5 | 6.8 | 7.2 |
Operating | 4.7 | 5.3 | 6.6 | 6.8 | 7.2 | |
Kv | Idle | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |
Operating | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
LpA,m | Idle | 29 | 33 | 50 | 52 | 56 |
Operating | 31 | 37 | 50 | 52 | 56 | |
Prominent discrete tones | No audible tones | Prominence ratio < 15 dB | ||||
Acoustical Performance: Idle @ 28 °C Ambient | ||||||
LwA,m (B) | 4.7 | 5.1 | 6.8 | 7.0 | 7.4 | |
Kv (B) | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
LpA,m (dB) | 32 | 35 | 50 | 55 | 59 | |
Acoustical Performance: Max. Loading @ 35 °C Ambient | ||||||
LwA,m (B) | 5.7 | 7.1 | 8.7 | 9.0 | 8.9 | |
Kv (B) | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
LpA,m (dB) | 40 | 58 | 70 | 73 | 72 |
LwA,m: The declared mean A-weighted sound power level (LwA) is calculated per section 5.2 of ISO 9296 with data collected using the methods described in ISO 7779 (2010). Engineering data presented here may not be fully compliant with ISO 7779 declaration requirements.
LpA,m: The declared mean A-weighted emission sound pressure level is at the bystander position per section 5.3 of ISO 9296 and measured using methods described in ISO 7779. The system is placed in a 24U rack enclosure, 25cm above a reflective floor. Engineering data presented here may not be fully compliant with ISO 7779 declaration requirements.
Prominent discrete tones: Criteria of Annex D of ECMA-74 & Prominence Ratio method of ECMA-418 are followed to determine if discrete tones are prominent and to report them, if so.
Idle mode: Idle mode is the steady-state condition in which the server is energized but not operating any intended function.
Operating mode: Operating mode is represented by the maximum of the steady state acoustical output at 50% of CPU TDP or active storage drives for the respective sections of Annex C of ECMA-74.