The Kingston H2O series belong to the most powerful modules
which the memory giant actually has in its portfolio. As soon as you
take a closer look at the specifications you'll see that they are very
serious. According to Kingston these DIMMs need only 1.5 Volt to
operate at 2133 MHz with 9-11-9-27 timings.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips