i returned my HIS 9800 pro for a Sapphire 9800 Pro so I could get the r360 core. The HIS 9800 pro had a vga silencer and RAM sinks pre-installed. I've already ordered a seperate vga silencer for my Sapphire, but I was wondering as to what kind of difference I might notice if I didn't purchase RAM sinks to put on my new Sapphire. I vaguely remember seeing in some forums that they don't really do anything..... Is there any difference? If there is, what type works well on 9800 pro. Thanks