You're really just partitioning an array. Slices are handy, but first you have to find the pivot point.

use List::MoreUtils qw( first_index );

sub partition {
  
  my $regex = shift;

  my $part  = first_index { $_ =~ $regex } @_;

  return [  @_[ 0 .. $part - 1 ]    ], 
         [  @_[ $part + 1 .. $#_ ]  ];

}

my @array = (
  'CPU Temp = 30',
  'GFX Temp = 45',
  'RAM Temp = 40',
  ' ',             # Space (pivot).
  'CPU Status = OK',
  'GFX Status = OK',
  'RAM Status = OK',
);


my( $temp, $status ) = partition( qr/^\s*$/, @array );

{

  local $" = ", ";

  print "Temp:   ( @{$temp} )\n";
  print "Status: ( @{$status} )\n";

}
[download]

...produces...

Temp:   ( CPU Temp = 30, GFX Temp = 45, RAM Temp = 40 )
Status: ( CPU Status = OK, GFX Status = OK, RAM Status = OK )
[download]

If you're reading these in from a file, you don't really need to hold the original list in an array. You can just push onto @temp until a blank (or all space) line is reached, and then start pushing onto @status. But your question stated the data is already in an array, so my code will handle that well.