Difference in price and performance of G.SKILL F3-12800CL7D-4GBECO and Cl9

[OCBalmang]

Trying to figure out why the 1600 2x2GB ECO G.skills CL9-9-9-24 1.35
Cost 134.99$


and the 1600 2x2GB ECO G.skills Cl 7-8-7-24 1.35 Cost only 75.70$

Is there any difference in performance and overclockability?

I'm using a i5-655k on a Classified 200 EVGA board i'd really like to get some feedback i'm looking for Something casual, instead of using my Elpida hypers 2000 Cas7 Ram....

( if i can get a new casual set i'd want to sell my Benching Ram as i haven't used it in any Benchmarks yet)

[overcrash]

Its left over from back when the prices were high. You can get decent 1600 Mhz 2x2 GB for 49-59$ at newegg.