OCC has published a new review on the Kingston Hyper X PC3 12800 Cl9 6GB

Since the modules are rated at 1600MHz 9-9-9-27 what better place to start then to see if the loose timings can be improved upon. To start with I lowered the Cas Latency, TRTP and TRD to 8 and the TRAS to 24 all while running the default 1.65 volts. Expecting a black screen I was surprised that the modules booted and then tested fine at 8-8-8-24. Next I started bumping the memory speed up by increasing the bclock a few MHz at a time and rebooting. Then thing is the modules kept scaling with the 8-8-8 subtimings until I reached 1884MHz. So far 284MHz worth of extra clock speed. At this level I was able to benchmark game and run stability tests at will. Any higher though required the Cas Latency to move to 9. Voltage did not help and above 1.68 I would get errors so the max voltage used was 1.67 volts. Moving on up from 1884 I finally reached 1976MHz with the timings at 9-9-8-24 with the memory voltage at 1.66 volts QPI volts at +220 and the CPU at 1.28 volts. 376MHz (187MHz actual) worth of increase for a set of memory that costs just 131 bucks is nothing to sneeze at. Unfortunately 2000MHz just was not to be for me on this set. So close yet so far.

Kingston Hyper X PC3 12800 Cl9 6GB Review