Processor compatibility mode definitions
You can learn about each processor compatibility mode and the servers on which each mode can run.
The following table describes each processor compatibility mode and the servers on which the logical partitions that use each processor compatibility mode can successfully operate.
| Processor compatibility mode | Description | Supported servers |
|---|---|---|
| POWER9_Base | The POWER9_Base processor compatibility mode allows supporting operating system versions to utilize POWER9 features on systems that run on firmware level FW910 or later. | Power11, Power10 and POWER9 |
| POWER9 | The POWER9 processor compatibility mode allows supporting operating system versions to utilize POWER9 features along with enhanced interrupt and compression co-processor support on systems that run on firmware level FW940 or later. | Power11, Power10 and POWER9 |
| Power10 | The Power10 processor compatibility mode allows supporting operating system versions to utilize Power10 features. | Power11 and Power10 |
| Power11® | The Power11 processor compatibility mode allows supporting operating system versions to utilize Power11 features. | Power11 |
| default | The default processor compatibility mode is a configured processor compatibility mode that enables the hypervisor to determine the effective mode for the logical partition. When the configured mode is set to default, the hypervisor sets the effective mode to the most fully featured mode supported by the operating environment. In most cases, this is the processor type of the server on which the logical partition is activated. | The servers on which logical partitions with the configured processor compatibility mode of default can run depend on the effective processor compatibility mode of the logical partition. |