# makeCommandQueue() Creates a queue you use to submit rendering and computation commands to a GPU. ``` func makeCommandQueue() -> (any MTLCommandQueue)? ``` ## Return Value A new [`MTLCommandQueue`](/documentation/Metal/MTLCommandQueue) instance if the method completed successfully; otherwise `nil`. ## Discussion A command queue can only submit commands to the GPU device instance that created it. > Important: > The command queues you create with this method allow up to 64 uncompleted command buffers at time. This method is the equivalent of passing `64` to the [`makeCommandQueue(maxCommandBufferCount:)`](/documentation/Metal/MTLDevice/makeCommandQueue(maxCommandBufferCount:)) method. ```objective-c id commandQueue; NSUInteger capacity = 64; commandQueue = [device newCommandQueueWithMaxCommandBufferCount:capacity]; ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)