I'm looking to buy a silent computer case. My PC is somewhat loud especially the GPU and would like to suppress the noise. Should I go with the Fractal R4 or Corsair 550D? I'm leaning towards the R4 because its cheaper, but are these cases really whisper quiet? I need some opinions and any suggestions on other silent cases. Thanks.
Fractal R4
http://www.newegg.com/Product/Product.aspx?Item=N82E16811352025
Corsair 550D
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139012
Fractal R4
http://www.newegg.com/Product/Product.aspx?Item=N82E16811352025
Corsair 550D
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139012