my $CPU = 'Intel(R) Xeon(R) CPU          X5660  2.80GHz ';
# field:    0        1       2  3..11     12  13 14       # using / /
# field:    0        1       2            3      4        # using / +/

##</code><code>##

my @CPU_SPLIT = split / +/, 'Intel(R) Xeon(R) CPU          X5660  2.80GHz ';

# 1 - feed each field explicitly
print join ' ', $CPU_SPLIT[0], $CPU_SPLIT[1], $CPU_SPLIT[2], $CPU_SPLIT[3], $CPU_SPLIT[4]; print "\n";

# 2a - use an array slice - explicitly
print join ' ', @CPU_SPLIT[0,1,2,3,4]; print ">n";

# 2b - use an array slice - via a range
print join ' ', @CPU_SPLIT[0..4]; print "\n";

# 3 - feed the whole array
print join ' ', @CPU_SPLIT; print "\n";