Hello, I just bought this: Crucial Ballistix Sport 8GB Single DDR3 1600 MT/s PC3-12800 CL9 1.5V UDIMM 240-Pin Memory (BLS8G3D1609DS1S00). It was off of Amazon. Anyways, Intel extreme utility says I have 4 GB of memory after I installed 1 stick of 8 GB. Any idea why? It's seated in correctly. Also, I overclocked it to 1866 Mhz, if that might be the cause of something.