The CL7 set is the faster of the two, believe they use the same chips, the ones with the tighter (better) CL of 7 binned out a little better to run at 7, both are considered 'performance' 1600 sticks, the 7 set should OC better
The CL7 set is the faster of the two, believe they use the same chips, the ones with the tighter (better) CL of 7 binned out a little better to run at 7, both are considered 'performance' 1600 sticks, the 7 set should OC better