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Discussion in 'Mac Pro' started by marclondon, May 20, 2014.
Has anyone measured the power used by the base model at say idle and under moderate load?
I know - was wondering if anyone had measured real world conditions.
~70 watts at idle, actually measured.
A lot more that the 43 watts quoted by Apple...
Perhaps the config is different.
More memory, bigger SSD, perhaps some bus-powered peripherals, perhaps some background processes active, perhaps less core-parking....
Although Anand got 85 watts for a 12 core.... http://www.anandtech.com/show/7603/mac-pro-review-late-2013/14
I take it, you are interested in the power draw of a specific MP6,1 configuration... there are many combinations. Which combo are you wanting to know about ?
As I said, the base stock model:
Quad-Core and Dual GPU
3.7GHz Quad-Core Intel Xeon E5 processor
12GB 1866MHz DDR3 ECC memory
Dual AMD FirePro D300
with 2GB GDDR5 VRAM each
256GB PCIe-based flash storage
70-140 watts on 4 cores, 32GB, 512SSD, 2 ext drives, 1 four ports usb hub, and iphone and ipad plugged in.
Hover around 74 - 90 most of the time. Decent power usage, but I still have to put it to sleep or the office get warm the next day due to a lack of heat dissipation.
OK.... but defining "moderate load" is also important as power consumption is very sensitive to connected peripherals and the type of workload running on the system. Even such things as indexing/Spotlight can kick up cpu use and power consumption.
nMP 6c/32GB/1TB/D700: 48W @ IDLE and between 70-110W web browsing etc. Actual numbers from a power/watt meter.
Idle power for MP5,1 comparison
As a comparison my MP5,1 running at idle after login
12 core 2x 2.93 GHz processors
4GB RAM (2x 2GB 1066 MHz sticks)
1 TB Seagate 7200 rpm disk
Stock Nvidia GT 120 graphics card
23" ACD display
USB KB and Mouse
Idle power consumption displayed by a KILL-A-WATT meter was 197 watts, and with the 23" ACD screen sleeping the power consumption fell to 140 watts.
Running a Geekbench 3 (64-bit) Stress Test for 30 minutes showed power consumption from a low of 222 watts and a high of 363 watts and an average during the run at around 330 watts.