The Z87 chipset supports 6 SATA3.0 connectors. The example I used was for a Z77, so you're fine
Here is the documentation from HP on the motherboard:http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03748942&cc=us&dlc=en&lc=en#N292
Here is the documentation from Intel on the chipset (which the motherboard is built around):http://ark.intel.com/products/75013
As you can see, it supports several features that would be useful to you. As for the CPU turbo feature, that should be determined by the CPU itself. The 4770 you're looking at, provides just that.