This is my DOTA 2 hardware configuration and in-game settings.

System Information

Processor Information:
    Model:  MacPro4,1
    Vendor:  GenuineIntel
    CPU Family:  0x6
    CPU Model:  0x1a
    CPU Stepping:  0x5
    CPU Type:  0x0
    Speed:  2925 Mhz
    8 logical processors
    4 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported
    SSSE3:  Supported
    SSE4a:  Unsupported
    SSE41:  Supported
    SSE42:  Supported
    
Network Information:
    Network Speed:  
    
Operating System Version:
    MacOS 10.11.0 (64 bit)
    
Video Card:
    Driver:  NVIDIA GeForce GTX 670

    Driver Version:  1.2
    Driver Date: 0  0
    OpenGL Version: 2.1
    Desktop Color Depth: 32 bits per pixel
    Monitor Refresh Rate: 59 Hz
    VendorID:  0x10de
    DeviceID:  0x1189
    Number of Monitors:  2
    Number of Logical Video Cards:  1
    Primary Display Resolution:  2560 x 1440
    Desktop Resolution: 5120 x 2880
    Primary Display Size: 23.46" x 13.19"  (26.89" diag)
                                            59.6cm x 33.5cm  (68.3cm diag)
    Primary VRAM: 2047 MB
    
Memory:
    RAM:  8192 Mb
    
Miscellaneous:
    UI Language:  English
    Microphone:  Not set
    Media Type:  DVD
    Total Hard Disk Space Available:  4901201 Mb
    Largest Free Hard Disk Block:  944264 Mb

    

-------------DOTA2 VIDEO SETTINGS
https://dl.dropboxusercontent.com/u/602991/DOTA2/2013-07-16_00003.jpg
Aspect Ratio: 16:9
Resolution: 2048x1152 2048x1152 Resolution
Display Mode: Fullscreen
Brightness: Mid 60%
VSync: OFF
https://dl.dropboxusercontent.com/u/602991/DOTA2/2013-07-16_00004.jpg
Anti-Aliasing: ON
Specular: ON
Specular Bloom: ON
Water Quality: ON
Fog: ON
Shadows: HIGH
Animate Portrait: ON
Additive Light Pass: ON
World Lighting: ON
Ambient Occlusion: ON
Textures: HIGH
Render Quality: 100%
Ambient Creatures: ON