SQL Server Memory Checking

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–== MEMORY CHECKING ==
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select * from sys.dm_os_performance_counters where counter_name like ‘%Target Server Memory%’
GO
select * from sys.dm_os_performance_counters where counter_name like ‘%Total Server Memory (KB)%’
GO
select *, cntr_value/1024.00/1024.00 from master..SYSPERFINFO where counter_name like ‘%Target Server Memory%’
GO
DBCC MEMORYSTATUS
GO
select sum(awe_allocated_kb) / 1024 as [AWE allocated, Mb] from sys.dm_os_memory_clerks