XSReviews has reviewed the Kingston HyperX 1866Mhz memory kit
A quote from the article:
>> Kingston HyperX 1866Mhz Review
The introduction of Intel's i7 platform coincided largely with the release of DDR3 memory bringing with it the prospect of triple channel setups. As a result, many memory kits have been produced specifically for the X58 motherboard generally of the order of 6GB (3 x 2GB). Typically, 1066MHz or 1333MHz DRAM has been used by the average users with higher frequencies seemingly classed as more "enthusiast" memory.
However, with the price of DDR3 memory dropping, the lure of higher frequencies for use in combination with the i7 920 or other i7 CPUs is becoming a little greater. This is magnified by the ability to push the frequencies to 1866MHz or 2000MHz by simply changing the divider allowing for quick and easy overclocking which, when combined with a clock of 3.8-4.0GHz (easily achievable on the i7 920), gives a very significant performance boost.
Kingston's HyperX range has often been considered as the company's headline memory act with its distinctive, flashy heat spreaders. This particular kit, KHX1866C9D3T1K3/6GX, is made up of three 2GB sticks each running at a stock speed of 1866MHz with CL9 timings. Let's take a closer look.
>> Kingston HyperX 1866Mhz Review