That's good to hear.

Is this a viable option to have running on a Linux box so that you can use it as a CI for testing iOS apps?

Or to be specific, what kind of specs, i.e. the amount of RAM would be needed to have a reasonable performance?

Thanks

For both iOS simulator and Safari, the lack of GPU acceleration can be a problem, depending on what/how you're trying to test, and also depending on OS version. I believe Xcode 11 requires a Metal-capable GPU in order to even run. As someone else has mentioned, you can however use IOMMU/PCIe passthrough with certain graphics cards to get acceleration inside the VM.