The Team Group Xtreem 1600 MHz CL8-8-8-24 kit utilizes modern ICs to manage the speed at 1.65V. This puts it in line with the Intel specifications. This also means that it will not scale well with more voltage, in fact it performs worse if you apply anything above 1.7 V. Some may think this is a bad thing, but remember at whom this memory is aimed at. If you are a hard core overclocker and you are thinking of buying a mainstream 1600 MHz CL8 kit, then you are not a hardcore overclocker. The Xtreem Dark modules are aimed at those wanting to run their systems as close to the Intel specifications as possible and in such a scenario these are a solid pick. With plenty of overclockability from the default 1600 MHz while staying within the boundary of 1.65 V along with the ability to run the pair at tighter timings with the same speed, the Xtreem Dark are a fun pair to have up and running. On top of that you have the option to push the memory higher with a relaxed CAS latency. While this does not give you the extreme performance in comparison to 2000 MHz CL7 kits out there, it does allow you to push your i5 and its 2:10 multiplier to the limit and take the memory along with it. One downside remains the limited availability and slight price premium, but since the latter would be solved with a larger number of shops carrying the brand, if you can get your mittens on a pair of Xtreem Darks and are not a hardcore overclocker, you will not be disappointed.