GreaterEqual does some simplification when its arguments are not numbers.
For exact numeric quantities, GreaterEqual internally uses numerical approximations to establish numerical ordering. This process can be affected by the setting of the global variable $MaxExtraPrecision.
y, entered as x Esc >/ Esc y or x\[GreaterSlantEqual]y, can be used on input as an alternative to x≥y. 
EXAMPLES
Basic Examples 
Scope 