I can't see any difference between these but one is a lot cheaper , am I missing something obvious?
http://www.overclockers.co.uk/showproduct.php?prodid=GX-228-SP&groupid=701&catid=56&subcat=411
http://www.overclockers.co.uk/showproduct.php?prodid=GX-003-HS&groupid=701&catid=56&subcat=411
http://www.overclockers.co.uk/showproduct.php?prodid=GX-228-SP&groupid=701&catid=56&subcat=411
http://www.overclockers.co.uk/showproduct.php?prodid=GX-003-HS&groupid=701&catid=56&subcat=411