Measuring the RTX 2080 Ti’s Power Draw with its RTX Cores Enabled versus Idle

(updated 12/20/2018 1 AM PT)

This updated evaluation will attempt to compare the RTX 2080 Ti’s power draw with its RTX cores enabled versus sitting idle.  Since Battlefield V has been released using DXR for reflections and Final Fantasy XV has been released with DLSS, we will measure the total system power draw by comparing identical benchmark runs with these RTX features turned on versus off.

We have no way to isolate the RTX 2080 Ti’s power draw from the rest of the system, so we use a Kill-A-Watt meter to measure the Wattage of our total system power draw.  First, we will run our maxed-out Ultra 4K Battlefield V reflections benchmark with DXR disabled so that the RTX 2080 Ti’s RTX cores will sit idle, and we will measure our overall system power draw.  We will then follow-up with an identical run using Ultra DXR enabled so that the RTX cores are working, and we will again measure our overall power draw.  We will compare the results of multiple runs with DXR on versus off to see what we get.  Finally, we will post a representative video running our benchmark to compare the total system power draw with DXR on versus off.

We will do the same thing with Final Fantasy XV with DLSS enabled versus disabled using TAA instead to see if we can get an idea of how much extra power draw – if any – the RTX 2080 Ti uses when its Tensor cores are working versus when its cores are sitting idle.

Let’s check out our our RTX power draw comparison and the conclusion after we check out our test configuration on the next page.