Here's a summary of the DXdiag... my machine should be powerfull enough... I play FSX with tons of add-ons and decent graphic vs frame rate and play the latest FPS online without any problems
Operating System: Windows 7 Home Premium 32-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110408-1631)
Language: English (Regional Setting: English)
System Manufacturer: ACER
System Model: Aspire M5641
BIOS: BIOS Date: 05/23/08 16:37:53 Ver: 08.00.15
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 3072MB RAM
Available OS Memory: 3072MB RAM
Page File: 1444MB used, 13912MB 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: 6.01.7601.17514 32bit Unicode
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DxDiag Notes
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Display Tab 1: No problems found.
Display Tab 2: No problems found.
Sound Tab 1: No problems found.
Sound Tab 2: No problems found.
Sound Tab 3: The file TotRec7.sys 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 4: No problems found.
Sound Tab 5: No problems found.
Input Tab: No problems found.
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DirectX Debug Levels
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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)
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Display Devices
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Card name: NVIDIA GeForce GTS 250
Manufacturer: NVIDIA
Chip type: GeForce GTS 250
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0615&SUBSYS_210319DA&REV_A2
Display Memory: 2287 MB
Dedicated Memory: 1007 MB
Shared Memory: 1279 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: Dell E228WFP
Monitor Model: DELL E228WFP
Monitor Id: DELD015
Native Mode: 1680 x 1050(p) (59.883Hz)
Output Type: HDMI
Driver Name: nvd3dum.dll,nvwgf2um.dll,nvwgf2um.dll
Driver File Version: 8.17.0012.7533 (English)
Driver Version: 8.17.12.7533
DDI Version: 10
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 5/21/2011 06:01:00, 11992680 bytes
WHQL Logo'd: Yes
WHQL Date Stamp:
Device Identifier: {D7B71E3E-4555-11CF-0767-0F011CC2C535}
Vendor ID: 0x10DE
Device ID: 0x0615
SubSys ID: 0x210319DA
Revision ID: 0x00A2
Driver Strong Name: oem11.inf:NVIDIA_SetA_Devices.NTx86.6.1:Section005:8.17.12.7533:pci\ven_10de&dev_0615
Rank Of Driver: 00E62001
Video Accel: ModeMPEG2_A ModeMPEG2_C ModeVC1_C ModeWMV9_C
Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2)
D3D9 Overlay: Supported
DXVA-HD: Supported
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled