Author Topic: power consumption figures?  (Read 807 times)

pocock

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power consumption figures?
« on: June 01, 2020, 04:25:21 pm »

The wiki has some rough power figures for Talos II

Could anybody provide similar figures for basic Blackbird builds, with bare minimum spec, no GPU?

E.g.
Blackbird + 32GB + basic SSD + CPU (4 core v2 idle) = ? Watts
Blackbird + 32GB + basic SSD + CPU (4 core v2 100% utilization) = ? Watts
Blackbird + 32GB + basic SSD + CPU (8 core v2 idle) = ? Watts
Blackbird + 32GB + basic SSD + CPU (8 core v2 100% utilization) = ? Watts

This type of detail is really useful for anybody trying to estimate PSU requirements, runtime on a UPS and heat output of the box

In comparison, HP provides a couple of example builds for each of their Z workstations in quickspecs documents like this (see page 26).  Most people can extrapolate from one of the examples to their own use case.
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MPC7500

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Re: power consumption figures?
« Reply #1 on: June 02, 2020, 08:21:39 am »
On the Blackbird page you will figures, too.

pocock

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Re: power consumption figures?
« Reply #2 on: June 02, 2020, 02:48:26 pm »
On the fourth row, for Blackbird bundle, do those figures include the CPU power usage or it is necessary to add the CPU figure from above?

The paragraph above the table suggests that power was measured at the wall, that implies the bundle figures include the CPU power.

It also seems very odd that the top row, a 4-core CPU running at 2.15GHz is using more power (54W) than the 8-core CPU at 3.8GHz (34W).  Is the figure for a 4-core system based on the complete bundle, motherboard, RAM, etc?
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MPC7500

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Re: power consumption figures?
« Reply #3 on: June 02, 2020, 06:38:16 pm »
I hardly guess, row four is also the complete (measured at the wall) system.
The top row is also the complete system (except a optical drive, minus RX5500 XT).

You can't compare measured at the wall with data reported by lm_sensors figures.
Data reported by lm_sensors is CPU alone, AFAIK.

You should compare row one with row four instead.
madscientist159 claims that the idle of 4-core and 8-core are identical, IIRC.

pocock

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Re: power consumption figures?
« Reply #4 on: June 03, 2020, 08:20:16 am »
I feel it might be a good idea to split the tables in both the Talos II and Blackbird pages.  One table would only have wall socket measurements and the other table would have per-component measurements.

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