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docs: update virt/vm/chipset

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virt/vm/chipset.md
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title: Chipset
description:
published: true
date: 2022-01-25T14:48:33.609Z
date: 2022-01-25T21:53:38.960Z
tags:
editor: markdown
dateCreated: 2021-11-13T11:56:47.463Z
---
# Emulated chipsets
# Virtual chipsets
## Description
Just as physical computers, virtual machines are build around a central chipset.
> There are two kinds of emulated chipsets that are currently supported by Phyllome OS: `i440fx` and `Q35`. Eventually, the `virt` model, which ships alongside the Cloud Hypervisor, will also be supported.
{.is-info}
## Available chipsets for virtual machines
| **Support** | i440fx | Q35 | virt |
### i440fx
The `i440fx` virtual chipset is a legacy chipset, compatible with PCI.
### Q35
The `Q35` virtual chipset is based on a modern chipset, compatible with PCI-Express.
### virt
The `virt` virtual chipset is the most modern chipset, compatible with PCI-Express. It only supports [virtio-devices](/virt/vm/virtio).
## Comparison
| | `i440fx` | `Q35` | `virt` |
| :- | :-: | :-: | :-: |
| *Firmware* | SeaBIOS OVMF | SeaBIOS OVMF | Rust firmware |
| *Firmware* | [SeaBIOS](/virt/vm/firmware#seabios) / [OVMF](/virt/vm/firmware#ovmf) | [SeaBIOS](/virt/vm/firmware#seabios) / [OVMF](/virt/vm/firmware#ovmf) | [OVMF](/virt/vm/firmware#ovmf) **?** / [RHF](/virt/vm/firmware#rust-hypervisor-firmware) |
| *PS/2 devices* | **Yes** | **Yes** | No |
| *USB Controller* | **Yes** | **Yes** | ? |
| *SATA Controller* | No | **Yes** | ? |
@ -28,15 +41,14 @@ dateCreated: 2021-11-13T11:56:47.463Z
| *PCI Bus* | **Yes** | No | No |
| *Virtual Function I/O* | No | **Yes** | **Yes** |
## Dedicated page (upcoming)
> To be created and populated. It would be great to talk about these virtual chipsets versions (now there is the `Q35 6.1`). is there any breaking changes between revisions?
> The *`i440fx` and `Q35` chipsets are currently supported by Phyllome OS. Early support for the `virt` model is expected for the Beta version*
{.is-info}
* `i440fx`
* `Q35`
* `virt`
## Resources
* [Official documentation](https://wiki.qemu.org/Features/Q35) on Q35
* [Official documentation](https://wiki.qemu.org/Features/Q35) on Q35
---
*[**Go back to parent page**](/virt/vm)*