Is my PC old? Game crashes every time. [ Edited ]

[BlessedSims]

Please help. Every time I play my game will eventually crash. It never fails.On a good day I can play for about 2 hours before it goes down. It's random when it crashes, but it seems most likely to happen when I'm in "Neighborhood Edit" mode. I have all expansions, Nrass Traveler mod, and some CC. Mostly from the Sims store. I'm trying to figure out if it's my PC or perhaps the cc. (Note: The game has been crashing long before I got the Traveler mod.) I'm wondering if perhaps I need 1 more GB of RAM? One more is all my PC can take.

Here are my specs: 

System Information
------------------
Time of this report: 3/2/2013, 22:33:23
Machine name: CONDUIT
Operating System: Windows 7 Professional 32-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.130104-1431)
Language: English (Regional Setting: English)
System Manufacturer: MICRO-STAR INTERNATIONAL CO.,LTD
System Model: MS-7529
BIOS: Default System BIOS
Processor: Intel(R) Pentium(R) Dual CPU E2220 @ 2.40GHz (2 CPUs), ~2.4GHz
Memory: 3072MB RAM
Available OS Memory: 3072MB RAM
Page File: 1612MB used, 4525MB 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

Display Devices
---------------
Card name: NVIDIA GeForce 9400 GT
Manufacturer: NVIDIA
Chip type: GeForce 9400 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0641&SUBSYS_236E1682&REV_A1
Display Memory: 2287 MB
Dedicated Memory: 1007 MB
Shared Memory: 1279 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: Acer LCD Monitor X203W
Monitor Model: Acer X203W
Monitor Id: ACR0008
Native Mode: 1680 x 1050(p) (59.883Hz)
Output Type: HD15
Driver Name: nvd3dum.dll,nvwgf2um.dll,nvwgf2um.dll

Sound Devices
-------------
Description: Speakers (High Definition Audio Device)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_14627529&REV_1000
Manufacturer ID: 1
Product ID: 65535
Type: WDM
Driver Name: HdAudio.sys
Driver Version: 6.01.7601.17514 (English)

[crinrict]

Yes, your PC is a bit old, especially if you have all EPs.

1 GB of RAM more won't help cause you only have a 32 bit operating system that can't use more then 2 GB of the RAM you have anyways.

If you can afford, I would look into something new.