Performance differences for simple code

Performance ". NET Framework Program design" in a few lines of code, I have to rearrange, written as a function, so the following decompile code looks more convenient:

public void Boxing ()
{
Int32 v = 5;
Console.WriteLine ("{0},{1},{2}", v,v,v);
}
public void Boxing1 ()
{
Int32 v = 5;
Object o = V;
Console.WriteLine ("{0},{1},{2}", O,o,o);
The output of two functions is the same, but which function is better?

The first one is obviously simpler, but the second best in performance is to look at the decompile code:
Boxing function:
. method public Hidebysig instance void Boxing () cil managed
{
Code size:31 Byte (s)
. maxstack 4
. Locals (
Int32 v_0)
l_0000:ldc.i4.5
l_0001:stloc.0
L_0002:ldstr "{0},{1},{2}"
l_0007:ldloc.0
L_0008:box int32
l_000d:ldloc.0
L_000e:box int32
l_0013:ldloc.0
L_0014:box int32
L_0019:call void [Mscorlib]system.console::writeline (String, Object, object, object)
L_001e:ret
}



The BOXING1 function:
. method public Hidebysig instance void Boxing1 () cil managed
{
Code size:23 Byte (s)
. maxstack 4
. Locals (
Int32 v_0,
Object v_1)
l_0000:ldc.i4.5
l_0001:stloc.0
l_0002:ldloc.0
L_0003:box int32
L_0008:stloc.1
L_0009:ldstr "{0},{1},{2}"
L_000e:ldloc.1
L_000f:ldloc.1
L_0010:ldloc.1
L_0011:call void [Mscorlib]system.console::writeline (String, Object, object, object)
L_0016:ret
}


The first function has three boxing operations, the second is only once, and is smaller in both memory and time consumption.