Both kits did well, managing to reach a nice frequency of 1800MHz at a tight CL7-7-7- latency setting. At CL8-8-8-, the KHX13000LLK2/2G kit was able to squeeze out a small 20MHz, while the KHX14400D3K2/2GN kit faired slightly better, returning 40MHz on top of what it could do at CL7. Unfortunately, the low latency 1625MHz kit did not manage to scale any further even at relaxed latency of CL9-9-9-, stopping at a final 1820MHz. The 1800MHz kit still had some more in it, reaching its limit at 1900MHz.

The KHX13000LLK2/2G 1625MHz kit and the KHX14400D3K2/2G 1800MHz kit managed to POST at 1900MHz and 2000MHz respectively, but the system was too unstable to load Windows.

Kingston HyperX performance memories

With both kits offering great performance at CL7-7-7-, you wouldn't go wrong with either Kingston pair. Our estimate is that overall system performance with memory running at 1800MHz CL7 would be about the same as a system running 1900MHz CL9. Therefore, depending on how well your processor (and FSB) can scale, choose the kit that would fit the bill.

The Kingston HyperX KHX13000LLK2/2G 1625MHz 2GB DDR3 kit retails for around US$ 260 while the Kingston HyperX KHX14400D3K2/2GN 1800MHz 2GB DDR3 kit retails for around US$ 330.

Kingston HyperX KHX13000LLK2/2G 1625MHz 2GB DDR3 Kit

Kingston HyperX KHX14400D3K2/2GN 1800MHz 2GB DDR3 Kit