We’ll switch things up and open with the power and temperature behavior of the graphics card first. We use Final Fantasy XV Benchmark to simulate a gaming workload but for those looking extreme loads, we do put our cards through Kombustor on first installation for stress testing to check for stability. For our reviews though, we use Final Fantasy XV to simulate a true gaming scenario. Power draw is captured inline via PCAT or Powenetics so no other components affects readings. Readings are taken from the average 15 min idle readings for both load and idle.
Let’s take a look at clock behavior versus temperature:
In the chart above we can follow the clock speed pattern as the card heats up during load. From the left we have the GPU clock as highlighted by the darker line and the lighter pink line is the temperature detailed on the left. Clocks climb to around 1980Mhz, that’s actually close to the boost clocks of the RTX 3080 if not pretty identical but the factory boost pushes us further than an FE 3070.
The RTX 3080 showed us some of the best temps we’ve seen from a top card and that also gets passed down to the RTX 3070. With the RTX 3070, brands can get lazier with the tuning of the card and have a more silence-biased fan curve. The ZOTAC Twin Edge is a good example as it immediately stops its fan within a minute of dropping below 63*C. What’s more impressive is that its really easy to cool the RTX 3070 with heat dropping instantly even on high-stress loads, from 60*C to below 50*C in 5 seconds after the load is stopped.