107 / 4
101.4
2.3333
212
14.2917
roll r79 no 25
If I'm honest very, very little. The r7 425 and the r7 superquad are virtually the same driver. The superquad has a black head where the r7 425 is just metallic.
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The first is divided by one, then divided by two, then divided by three, then divided by four, and so on.