I recently purchased the crucial ballistix sport 8gb ram(http://www.crucial.com/usa/en/bls8g3d1609ds1s00) for my MSI Z77a-g45 mobo. I wanted to upgrade fomr 8gb to 16gb because i use a lot of VMs. It seems that computer got a lot slower after installation. What can be the cause of this problem? The previous ram was in dual channel of 2x4gb kingston memory(http://www.amazon.com/Kingston-Technology-1600MHz-KHX1600C9D3X2K2-8GX/dp/B004JO3L40). They ahve the same voltage and same latency. Any ideas?