Price $124.00 @ Newegg.com
Compared to the Extreme4, that's not a gaming board... 1 PCI Express 3.0 x16 slot + 1 PCI Express 2.0 x16 that only operates at x4 = no SLI support & not a great option for 7series Radeon's (pci express 3.0)in Crossfire... not that Crossfire is even needed with a 7850 or better card on a single 1080p monitor.
Realtek LAN chipset
My personal experiences with them is nothing short of bad.
Only 6 internal SATA connections - of course everyone's needs vary, but I'm currently using 7 internally & will be adding three 2TB drives for added storage space in the near future.
Compare the feature set of the ASUS & Extreme4... the ASUS ends up looking pretty lame.
Onboard debug LED - P8Z77-M = No - Extreme4 = Yes
external clear CMOS button - P8Z77-M = No - Extreme4 = Yes
LAN Chipset - P8Z77-M = Realtek - Extreme4 = Broadcom
RAMdrive utility - P8Z77-M = not included - Extreme4 = Included XFast RAM
LAN Optimization utility - P8Z77-M = not included - Extreme4 = Included XFast LAN (can improve online gaming)
Internal SATA Ports - P8Z77-M = 6 - Extreme4 = 8
Internal SATA 3.0 Ports - P8Z77-M = 2 - Extreme4 = 4
External SATA Ports - P8Z77-M = none - Extreme4 = 1 eSATA 3.0
Premium Gold plated Caps - P8Z77-M = No - Extreme4 = Yes (keeps external environmental corrosion away)