2. Z77 Pro3Z77-DS3H Memory4 × DDR3 2800+MHz4 × DDR3 2400+MHz MOSFET HeatsinkYesNo Power Phase4 + 1 + 13 + 1 +1 Vcore PowerDigi PowerAnalog ChokeHigher Current spec.Lower Current spec. LANRealtek GLANAtheros GLAN AudioRealtek ALC892, THX TruStudioRealtek ALC887 Lucid Virtu MVPSupportN/A Acceleration SoftwareXFast 555LAN Optimizer Non K-Series CPU OCNo-K OCN/A OverclockingEasy OCN/A Internet ManagementOnline Management GuardN/A Online UEFI UpdateInternet FlashN/A Humidity ProtectionDehumidifierPCB Humidity Protection Spec. Comparison Win

3. PWM Design Z77 Pro3 4+1+1 Power Phase Digi Power Higher Current spec. Choke MOSFET Heatsink Z77-DS3H 3+1+1 Power Phase Analog Power Lower Current spec. Choke NO Heatsink Poor

4. PWM Design  Smaller Choke Lower Currency spec.  3+1+1 Phase Hotter Needs more MOSFET More power waste  Analog Power Cheap Not user friendly  Bigger Choke Higher Currency spec.  4+1+1 Phase Cooler More Stable No power waste  Digi Power Greater power efficiency More power options to adjust Z77 Pro3 Z77-DS3H Poor  Heatsink Cooler Better looking  No heatsink Hotter Ugly

5. Memory Support Z77 Pro3 Supports 4 × DDR3 2800+MHz Z77-DS3H Supports 4 × DDR3 2400+MHz Only Poor  The pictures above is copied from official websites on Oct. 17 th 2012

6. LAN Chip Comparison LAN ChipProtocolAvg. (Mb/s) Difference Realtek RTL8111E TCP951.27+3.10% UDP67.12+16.70% Atheros AR8151 TCP922.64 UDP57.515 Netperf Benchmark Z77 Pro3 Realtek RTL 8111E Gigabit LANZ77-DS3H Atheros AR8151 Gigabit LAN Poor

7. Crucial M4 128GB 2.5” $109.99 Crucial M4 128GB mSATA $124.99 SATA2 Comparison Z77 Pro3 4 × SATA2 ports, reasonable and useful Z77-DS3H 3 × SATA2 ports + 1 × mSATA2 connector mSATA is not a standard on MBs. It’s hard to find another MB with mSATA when upgrading. More cost to buy an mSATA SSD?? Useless

8. VGA Software Comparison Z77 Pro3 Supports Lucid Virtu MVP which features 2 exciting technologies Virtual Vsync - NO TEARING BEFORE Virtual Vsync: TEARING ARTIFACT OR FPS LIMIT HyperFormance™ : Integrated + discrete graphics = Improves gaming frame rate 30-70%! Virtual Vsync : Brings GPU performance from 60 FPS Vsync limit back to its maximum without tearing. Z77-DS3H Does NOT support Lucid Virtu MVP Poor

9. Acceleration Software Z77 Pro3 Z77-DS3H Poor No Similar Software

10. Z77 Pro3 Z77-DS3H Poor No Similar Software Acceleration Software

11. Z77 Pro3 Z77-DS3H LAN Optimizer XFast LAN is a convenient tool that controls internet related applications easily and efficiently. Acceleration Software

12. Z77 Pro3 Z77-DS3H Real-time Traffic Shaping Plentiful options to optimize your internet traffic Easy, friendly UI Simple and crude UI Less options No Real-time monitor Lousy Acceleration Software

13. Z77 Pro3 Z77-DS3H No-K OC can unleash No-K CPU’s power by boosting its frequency with just one click. Poor OC Software Comparison 10% Boost Only Manual OC To overclock a Non K-series CPU.. 3 Easy OC options in the UEFI To overclock a K-series CPU..

14. Z77 Pro3 Z77-DS3H Lousy OC Software Comparison AXTU All-in-one, easy to use Clean, fast, functional 3D Power + EasyTune6 REALLY SLOW, it takes 4 secs to change one page with i7-3770K. 4 secs..z z z NOT all-in one software, inconvenient

15. Z77 Pro3 Z77-DS3H Poor Online UEFI Update Under the OS, you can download the latest BIOS from ASRock’s website. Under the UEFI, you can use Internet flash. Internet Flash Updates the latest BIOS from the internet in the UEFI No need for a HDD or USB disk Under the UEFI, there’s no way to update the BIOS online No Similar Software Under the OS, you can download the latest BIOS from Gigabyte’s website.

16. Z77 Pro3 Z77-DS3H Lousy UEFI Comparison You can do OC in the OC Tweaker page, no need to waste time changing pages to adjust each option. Useful OC options all in one page, easy to use You have to constantly switch pages to OC, a waste of time and waste of life.

17. Z77 Pro3 Z77-DS3H 3D?? UEFI Comparison Real MB photo, easy to understand Information about devices, such as CPU, VGA, memory module Monochrome, just a picture, not 3D No information of devices

18. Humidity ProtectionZ77-DS3H Humidity protection Only for PCB No protection for other components Z77 Pro3 ASRock Dehumidifier The computer will power on automatically to dehumidify the system after entering S4/S5 state.

19. It’s Easy. Choose Z77 Pro3.