DMV/TSQL to find out basic hardware information of the SQL Server including when SQL Server started.

Please use below code:

However, please be advised that it can not tell correct information around virtualization.  For example, it will show Hypervisor even if SQL runs on a physical OS where Hyper-V is on. So use this query only when you do not have sufficient access on underlying Windows Operating system to get these information directly.

-- Basic hardware information for SQL Server (sys.dm_os_sys_info)
/* This query is courtesy of All credits goes to original author. */

SELECT cpu_count AS [Logical CPU Count], scheduler_count, hyperthread_ratio AS [Hyperthread Ratio],
cpu_count/hyperthread_ratio AS [Physical CPU Count],
physical_memory_kb/1024 AS [Physical Memory (MB)], committed_kb/1024 AS [Committed Memory (MB)],
committed_target_kb/1024 AS [Committed Target Memory (MB)],
max_workers_count AS [Max Workers Count], affinity_type_desc AS [Affinity Type],
sqlserver_start_time AS [SQL Server Start Time], virtual_machine_type_desc AS [Virtual Machine Type]
FROM sys.dm_os_sys_info WITH (NOLOCK) ;