PowerColor Radeon HD 7870 Myst Edition Crossfire Reviewccokeman -
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PowerColor Radeon HD 7870 Myst Edition Crossfire Testing:
Power consumption of the system will be measured at both idle and loaded states, taking into account the peak voltage of the system with each video card installed. I will use Unigine's Heaven Benchmark version 4.0 to put a load onto the GPU using the settings below. A 15-minute load test will be used to heat up the GPU, with the highest measured temperature recorded as the result. The idle results will be measured after 15 minutes of inactivity on the system. With dual-GPU setups, the two core temperatures will be averaged.
- Unigine 4.0 Heaven Benchmark
- 1920x1080 Resolution
- 8x AA
- 15-minute load test
- 15-minute idle test
- Measurement is in watts
At idle the results are very close if not identical, but where the HD 7870 Myst Edition falls down is when the power consumed comes into play where it is over 20% less efficient under load than the GTX 660Ti. When overclocked that margin rises to just over 30% less efficient for the performance generated.