You'r HDD wil do 130Mbit/s bitrate just fine. you can use Crystaldiskmark to test read/write speed of you'r drives. My C: drive is 2x 840 Evo's in Raid0 giving me about ~900MB/s Seq Q32T1 read and write, and that's what i was recording to.
but defraggler is a Defragmentation program, Crystaldiskmark is a benchmark program for storage solutions. Might be that i found the wrong program on google though.
I will use Google and a few other things to find out speeds but yeah at least I can do 1080p60 videos