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# preferLowPowerDevice

An option for whether to select low-power-usage devices for Metal rendering.

```
static let preferLowPowerDevice: SCNView.Option
```

## Discussion

The value for this key is an <doc://com.apple.documentation/documentation/Foundation/NSNumber> object containing a Boolean value.

SceneKit uses this option when automatically selecting a Metal device on systems with multiple GPUs. If the value is <doc://com.apple.documentation/documentation/Swift/true>, SceneKit uses a device with low power usage requirements—for example, the integrated GPU on a MacBook Pro with both integrated and discrete graphics hardware.

Leaving this key unspecified is equivalent to setting its value to <doc://com.apple.documentation/documentation/Swift/false>. In this case, SceneKit chooses the most capable available Metal device.

---

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