
In game it shows I have 4071 (megabytes?) of memory and only 7.9 used at all times it doesn't matter if I'm flying or in tower or whatever it always shows 7.9 used.  Sometimes when I have the shadows set to 8192 my game takes a serious frame rate hit till I turn off the 8192 shadows or the game turns of the advanced detail.  I am wondering if my computer cannot handle it because somehow my graphics card isn't being used correctly.
------------------
System Information
------------------
Time of this report: 7/26/2010, 14:30:25
       Machine name: MYLES-PC
   Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100226-1909)
           Language: English (Regional Setting: English)
System Manufacturer: DELL Inc.
       System Model: Studio XPS 435T/9000
               BIOS: Default System BIOS
          Processor: Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz (8 CPUs), ~2.7GHz
             Memory: 8192MB RAM
Available OS Memory: 8182MB RAM
          Page File: 2320MB used, 14043MB available
        Windows Dir: C:\Windows
    DirectX Version: DirectX 11
DX Setup Parameters: Not found
   User DPI Setting: Using System DPI
 System DPI Setting: 96 DPI (100 percent)
    DWM DPI Scaling: Disabled
     DxDiag Version: 6.01.7600.16385 64bit Unicode
------------
DxDiag Notes
------------
      Display Tab 1: The file atiu9p64 aticfx64 aticfx64 atiu9pag aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64 is not digitally signed, which means that it has not been tested by Microsoft's Windows Hardware Quality Labs (WHQL).  You may be able to get a WHQL logo'd driver from the hardware manufacturer.
        Sound Tab 1: No problems found.
        Sound Tab 2: No problems found.
        Sound Tab 3: No problems found.
          Input Tab: No problems found.
--------------------
DirectX Debug Levels
--------------------
Direct3D:    0/4 (retail)
DirectDraw:  0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (retail)
DirectPlay:  0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow:  0/6 (retail)
---------------
Display Devices
---------------
          Card name: ATI Radeon HD 5700 Series
       Manufacturer: ATI Technologies Inc.
        Chip type: ATI display adapter (0x68B8)
           DAC type: Internal DAC(400MHz)
         Device Key: Enum\PCI\VEN_1002&DEV_68B8&SUBSYS_25431002&REV_00
     Display Memory: 4071 MB
   Dedicated Memory: 1012 MB
      Shared Memory: 3059 MB
       Current Mode: 1920 x 1080 (32 bit) (59Hz)
       Monitor Name: Generic PnP Monitor
      Monitor Model: DELL ST2210
         Monitor Id: DELA05A
        Native Mode: 1920 x 1080(p) (60.000Hz)
        Output Type: HDMI