G.Skill Ripjaws X 2133Mhz DDR3 RAM
Performance
With a stock voltage of 1.5v~1.6v, this RAM stays nice and cool even during 32M instances of HyperPi. Although the inner chips aren’t as high quality as the legendary Trident X, they are still decent and I was able to tighten my stock timings down to 10-11-10-29. 
The informational sticker located on the Ripjaws X RAM details the speed, timing, and voltage of the modules. As you can see here the stock timings of the RAM is 11-11-11-31, which is not the best for a speed of 2133Mhz, but it isn’t bad. When a pair of RAM doesn’t cost too much money like this pair of Ripjaws X you will find that the timings are a little higher. Luckily G.Skill has put some decent chips inside of the RAM to allow you to tweak it and tighten up the timings to make it faster at the stock speed of 2133Mhz or even try to overclock it to 2400Mhz. The decision is yours. If you don’t like overclocking or messing with timings then just run it as it is. You barely, if at all, would notice the difference. Timings can be a confusing thing, but I will be sure to show you benchmarks between the stock timings, tightened timings, and against other similar RAM when we get to the testing part of the review.
Now onto the voltage. This RAM has an operating voltage of 1.5v~1.6v which is great because the lower voltage reduces heat and also gives you more headroom for overclocking. A lot of RAM that runs at a speed of 2133Mhz requires a voltage of 1.65v. This makes me want to suggest this RAM to people who don’t have great IMC’s (Integrated Memory Controllers) in their CPU’s. The Ripjaws X should, in theory, put less stress on your CPU and possibly allow you to lower the CPU’s voltage a little bit. Very impressed with that!
Lastly, you will see that on the sticker it says “XMP Ready”. XMP is a profile for Intel CPU’s that is saved within the chip that tells your computer what speed, timings, and voltage to run the RAM at. It is very important to go into your BIOS when you install this RAM and select the XMP profile because if you don’t the RAM will run at a lower speed than it is rated for depending on what CPU you have. All G.SKILL DDR3 memory come with the latest Intel XMP standard developed for Intel platform. It provides PC enthusiasts an entirely trouble free overclocking experience to boost their Intel systems for extreme levels of performance, while retaining system stability. With the XMP profile, the RAM received an efficiency score of 31796. Now let’s give you some benchmarking so you can see what those numbers actually mean!!
