Intel's Z75 chipset isn't one we've heard about a lot and if you head over to Newegg and do a quick search for Z75 you'll discover just two motherboards that carry the chipset compared to the 65 items that are shown when you search for Z77.
If we head on over to the ASRock website and look at the motherboard section you'll see that while they offer a total of 12 Z77 based motherboards, they manufacture only one Z75 based motherboard and that is the ASRock Z75 Pro3. So why don't we see or hear much about this chipset? And what is the main difference between it and the higher end Z77?
Actually very little! On the PCI Express side the Z77 can have three PCIe x16 slots in an x8 / x4 / x4 configuration. The Z75 can only have up to two in an x8 / x8 configuration. The other main difference is that Intel SRT or Smart Response Technology isn't supported. What else differs, you ask? Nothing really - we've got the same CPU support, overclocking support, graphics support, RAID support, USB 2.0 and USB 3.0 ports and the same setup when it comes to SATA ports.
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