I would not use R4s on an H50. R4s have very poor static pressure, which is required to help push air through the radiator fins.I have a pair of these on my H50 http://www.newegg.com/Product/Produ...cm_re=COOLER_MASTER_R4-_-35-103-063-_-Product and they work great, they also come in different colors and they have them without led's
I would not use R4s on an H50. R4s have very poor static pressure, which is required to help push air through the radiator fins.
R4s make wonderful case fans though!
For case fans, not HS/Rad.Scythe Gentle Typhoons are incredibly quiet and have exceptional static pressure (if you want to use the for rads/HS). Scythe Slipstreams are really good as well (push alot of air, not too loud, bout $9 a fan). Scythe Ultra Kaze are nice as well (push alot of air, thicker than the average 120mm fan, very noisy and dont throttle down well).
If you want cheap fans, high speed yate loons are about $2.50 a fan, push ~90 cfm, not too loud. I bought 10 of them for ~$26 dollars shipped from Jabtech (some will tell you they are the "fake" ones, but they still work great for me).
If you really want Scythe, the slipstream is probably the best fan (IMO).