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# isDeviceCertified(for:)

Indicates whether the device supports the requested performance tier.

```
func isDeviceCertified(for performanceTier: NSDeviceCertification) -> Bool
```

## Parameters

`performanceTier`

The desired system performance tier. <doc://com.apple.documentation/documentation/Metal/NSDeviceCertification/iPhonePerformanceGaming> is the only performance tier.

## Return Value

`True` if the device meets the requirements for the given performance tier.

---

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