Caporegime
is the only difference between these two harddrives the amount of memory they hold:
http://www.overclockers.co.uk/showproduct.php?prodid=HD-336-WD
http://www.overclockers.co.uk/showproduct.php?prodid=HD-342-WD&groupid=1657&catid=1660&subcat=1664
because if it was i may aswell get the 600gb one because i wont need a whole 1TB
Yes it is, also the size of the individual platters inside maybe denser, ie,
640GB = 320GB X 2platters.
1TB = 500GB X 2platters.
the denser the platter-generally the better the performance.
But to be perfectly honest, the 64mb cache and SATA6GB interface is a gimmick, as harddrives are to slow to need the fast interface speed, and Samsung F3 or Seagate Barracuda drives are just as fast with only 32mb or 16mb of cache.
So you can save money by picking one of these,
500GB - http://www.overclockers.co.uk/showproduct.php?prodid=HD-206-SE&groupid=701&catid=14&subcat=940
500GB - http://www.overclockers.co.uk/showproduct.php?prodid=HD-081-SA&groupid=701&catid=14&subcat=940
1TB - http://www.overclockers.co.uk/showproduct.php?prodid=HD-243-SE&groupid=701&catid=14&subcat=1279
1TB - http://www.overclockers.co.uk/showproduct.php?prodid=HD-082-SA&groupid=701&catid=14&subcat=1279