If you connect to NVIDIA DisplayPorts ports multiple displays with frame refresh rate above 60 Hz there is a surge in energy graphics consumption . The adapter raises the voltage of its power and increases the frequency of the GPU, even in standby mode (without 3D-load).
The test system used the graphics card Gigabyte GeForce GTX 1080 Xtreme Gaming. adapter parameters were monitored using Gigabyte Xtreme Gaming Engine utility. The two ports DisplayPorts adapter connects monitors Eizo Foris FS2735 with support for 144 Hz FreeSync and Asus ROG Swift PG279Q with support for 165 Hz G-Sync. When connecting the first one monitor Asus ROG Swift PG279Q idle system video frequency was 291 MHz, regardless of the monitor mounted on the frame rate of 60 Hz or 165 Hz. Measurement system via consumption Watts Up showed an average of 65-75 watts.
Connecting the second port Eizo monitor with a frequency of 60 Hz immediately caused a rise adapter frequency to 1304 MHz and consumption to 107 watts. ncreased frame rate Eizo monitor up to 144 Hz had no effect on the frequency and consumption. But the decrease in frame rate Asus ROG Swift PG279Q monitor up to 60 Hz to 144 Hz for the preservation of Eizo monitor adapter frequency returned to the "base value" 291 MHz.
The author hopes that NVIDIA still sort out the problem. It is very inconvenient to constantly monitor the condition of the card during the operation with two or more monitors. Related Products :
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