Which G.Skill Ripjaws should I get?
 

There is a price difference of $2 between the G.SKILL F3-10666CL7D-4GBRH Ripjaws and the G.SKILL F3-12800CL9D-4GBRL Ripjaws. At the same time, there are also the non-Ripjaws version selling for the same price, but it seems like I should go for the Ripjaws version. So which one should I stick with?

Do you intend to overclock? Small overclock, medium overclock, overclock till the chip's heat output starts nuclear fusion?

Use it with an i5 750 to achieve at least 4ghz.

I would go for this kit:

Buy G.SKILL F3-12800CL7D-4GBRM Ripjaws 4GB 2X2GB DDR3-1600 CL7-8-7-24 240PIN Dual Channel i5 Memory Kit

I got the same ones for my i5 @ 4GHz

Thx for the comments guys. Any reason why you picked one over the other?

The GBRH's have tighter timings for DDR3 memory at 7-7-7-21. That's why I went with those, but if someone can offer up more info it would be great. I am no pro when it comes to the intricacies of ram and the differences between them outside of speed and latency.

4GBRH
 

I have the F3-12800CL7D-4GBRH's as well as they are very good overclockers. I read about them on HT4U.net and have been running them at 1880mhz, 9.9.9.24 - 1T (they can go higher). 1.65 v and they are barely warm to the touch. I now have 4 x 2gb with no problems. Only thing is they are more expensive now - best price I can see is memoryhouse $132.12.
2c

Pretty much all of it is BBSE chip based so when you want the best clockers it is usually best to find the highest binned speed with the lowest timings. Im generalizing here but those give the best OC headroom.

How much did you purchased them for?