MIB walk complete can't find OID for CPU, Temp, Memory 4048-ON 10g switch need for SNMP

Peeps,

I am using PRTG and the normal SNMP sensors do not work.  I need to create costume ones buy using OID'd  I completed a MIB walk and looking through it I fund a few useful ones such as power supply status but I do not see OID's for CPU, Temp, or Memory. 

Are they labeled something other than CPU, Temp, or Memory?

below is an example of what I am looking at:

ENTITY-MIB 1.3.6.1.2.1.47.1.1.1.1.2.84 entPhysicalDescr.84 SnmpAdminString "S4048-ON Fan 1"
ENTITY-MIB 1.3.6.1.2.1.47.1.1.1.1.2.85 entPhysicalDescr.85 SnmpAdminString "S4048-ON Fan 2"
ENTITY-MIB 1.3.6.1.2.1.47.1.1.1.1.2.86 entPhysicalDescr.86 SnmpAdminString "S4048-ON Power Supply Module 1"
ENTITY-MIB 1.3.6.1.2.1.47.1.1.1.1.2.87 entPhysicalDescr.87 SnmpAdminString "S4048-ON PSU 1"
ENTITY-MIB 1.3.6.1.2.1.47.1.1.1.1.2.88 entPhysicalDescr.88 SnmpAdminString "S4048-ON Power Supply Module

Thanks,