What does Deluxe have what pro dont have and what does pro have that the normal dont have?
Here are the differences, if you choose to believe Newegg product details:
P8Z68-V PRO/GEN3
4 x SATA 6Gb/s
Audio Chipset Realtek ALC892
Rear Panel Ports
Video Ports
D-Sub + DVI
1 x HDMI
6 x USB 2.0
1 x eSATA 3Gb/s
S/PDIF Out 1 x Optical
Internal I/O Connectors
2 x USB 3.0 + 6 x USB 2.0
2 x 1394a for Firewire
2 x CPU Fan connector(s) (4 -pin)
GPU Boost - Push the Limits with iGPU Level Up!
P8Z68-V/GEN3
2 x SATA 6Gb/s
Audio Chipset Realtek ALC892
Video Ports: D-Sub + DVI and 1 x HDMI
6 x USB 2.0
1 x eSATA 3Gb/s
S/PDIF Out 1 x Optical
Internal I/O Connectors
Onboard USB 2 x USB 3.0 + 6 x USB 2.0
No 1394 connector for Firewire
2 x CPU Fan connector(s) (4 -pin)
GPU Boost - Push the Limits with iGPU Level Up!
P8Z68 DELUXE/GEN3
4 x SATA 6Gb/s
Audio Chipset Realtek ALC889
LAN Chipset Intel 82579
Second LAN Chipset Realtek 8111E
Rear Panel Ports
1 x PS/2 keyboard/mouse port
No D SUB-DVI
No HDMI
8 x USB 2.0
1 x IEEE 1394a
1 x eSATA 3Gb/s
1 x Power eSATA 3Gb/s
S/PDIF Out 1 x Optical, 1 x Coaxial
Internal I/O Connectors
2 x USB 3.0 + 4 x USB 2.0
1 x 1394a Firewire
1 x CPU Fan connector(s) (4 -pin)
No GPU Boost