Kingston Company uses very clear and easy to understand product indexing system for their memory modules. The product model name tells you all you need to know about the parameters of the solution:
Let’s decode the product model name on our memory modules - KHX14900D3T1K3/3GX:
- KHX – Kingston HyperX;
- 14900 – Memory bandwidth in MB/s. PC3-14900 memory works at 1866MHz effective frequency, so they could name it DDR3-1866. The actual memory frequency is 933MHz.
- D3 – DDR3;
- T1 – This is where they mention additional module features if any. In this case it indicates tall heat-spreaders (Tall HS);
- K3 – Number of DIMMs in the kit (3 DIMMs);
- 3G – Total kit capacity (3GB);
- X – Intel XMP technology support (Extreme Memory Profile). Besides the frequencies and timings that are available for this memory at standard voltage setting, SPD also contains one or two profiles with frequency and timings combinations for higher voltage settings. A mainboard supporting this technology can load the complete settings profile automatically, including higher voltage setting.
Let’s use Everest to check out the memory modules SPD and the information about the timings and frequencies combinations stored in it.
To ensure that this DDR3 SDRAM will be compatible and will start without any problems at the nominal voltage settings of 1.5V, the modules are introduced to the mainboards as standard DDR3-1333 working at 667MHz with 9-9-9-24 timings. SPD also contains information about other possible frequency and timings combinations. You will have to set the default voltage of 1.65V, frequency of 1866MHz and timings of 9-9-9-27 on your own in the mainboard BIOS. However, if the board supports Intel XMP technology, all these parameters will be adjusted automatically once you select the corresponding profile.