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July 13th, 2025 11:26
Precision 7920 Tower, power consumption high or low?
Hi everyone,
I'm considering using the Dell Precision 7920 Tower Workstation for some demanding tasks, but I'm concerned about power usage.
I know it's a high-end workstation, but I’d like to ask:
Is the power consumption of the Dell Precision 7920 considered high or low?
Especially interested in real world usage, idle vs. full load, and how it compares to standard desktops or other workstations. Any input or personal experience would be appreciated. Thanks!
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ejn63
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July 13th, 2025 12:30
It has a 1.1 or 1.4 kW power supply, which is typical of a workstation or gaming PC.
How much power the system draws will vary depending on the CPU and even more so, the GPU.
clintonsnow
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July 13th, 2025 12:34
@ejn63
It has two Intel® Xeon® processors.
ejn63
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July 13th, 2025 12:38
Depending on the model, just two Xeons running full out can draw 200W each. And that's without considering the rest of the system.
clintonsnow
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July 13th, 2025 12:57
I'm sorry, but I don't understand your explanation.
ejn63
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July 13th, 2025 13:00
Just two Xeon CPUs can draw 200W of power each by themselves. In other words, any workstation using them will draw about the same total power.
It isn't clear why you're concerned about power usage, but it'll be the same for any system with equivalent computing power.
These just are not going to be energy efficient workstations. Nothing capable of the workload these are will.
mazzinia_
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July 14th, 2025 10:27
ejn63 is correct, there are too many factors involved in the consumption, and those factors are controlled by the system owner, sort of way.
Depending on the setup, it may consume low under load ( compared to a comparable normal computer ) , or high ( but in such case it would outperform by a lot, a comparable normal computer ).
I have a 7820, and has a relatively similar energy footprint ( similar unless you add more gpus , at least ) , and with
2 x 85 watts cpus ( 32 threads in total )
an RTX A2000 gpu ( max 70watt )
3 hdd
2 nvme
4 ram modules
under full load, is a very energy efficient / low energy system
That would be also your case with a similar configuration on the 7920
Even if you upgrade to 2x 6140 xeons ( 140w each , 72 threads ) it would still be very efficient and consuming little ( imo)
If you move to 2 x 235W cpus, put 2x gaming rtx nvidia cards ( 4090 / 5090 ) , max the ram ... don't expect to consume little, on the opposite. But you would also have a lot of computing power at that point, under full load