OCZ has delivered another kickass product and while some of the testing showed that 4x UTT using 2-2-2-5 with 2T settings was a faster alternative when running 2GB, when using TCCD we were limited in our overclocking even when both kits can do 300+ on their own. Also, not all motherboards will provide the 3.1 volts UTT needed to run these speeds. Obviously, popping in two 1GB sticks of memory will be the preferred way of running 2GB of memory however, if you already have an existing gig of memory and are looking to add more moving to this type of kit may not be the most cost effective option.