Ruby: Hash {Key => [value1, value2]} - need to check value2 only for each key

Given that i have a dump memory object filled already and i want only to extract and work with the second value

x = Marshal.load(File.binread('in_memory'))

x.each {|key , value | puts " #{key} => #{value}"}

# My Result

1 => [[1, 200]]
2 => [[2, 450]]
6 => [[2, 1000]]
7 => [[4, 1003]]

The Marshal binary dump in to an hash has a key and an array of two values;

in the each loop how can i check for example if value2 is = or > than 1000... if i have some than i only need to display

6 => [[2, 1000]]
  7 => [[4, 1003]]

and the count of records found

count =2

is it possible with Marshal dumps and Hashes?