Debunking the 90* myth?

[SuperJew62]

Hello there,

Im more of a lurker than a poster and I wanted some input in regards to my current project.

My system has been running on cardboard with Watercooling on my floor for the past few months and I finally ponied up and bought a case. The case I purchased is a Giagabyte Auora 570 I will be mounting a MCR-220 rad on the back. Inside I will have a Laing G5 with a t-line, my question is better put in illustrated form. This pic from performance pc shows what i want to do add 90 degree elbows on the rad to decrease the tubing "loop" outside of the case. Will using 90 degree albows hurt my flow that badly?

Your thoughts and comments would be appreciated thank you.