If you're looking forward to playing Fallout 3, first you have to be sure that your computer has enough juice to run the game at proper frame rates. So here are the official game requirements of the game, recently revealed to public.
If you ask me, the requirements aren't too demanding. You're going to need a powerful computer to run it on the maximum settings but if you don't have one, that doesn't mean you can't play the game.
The game is due for release on October 28th for the PC, PS3 and Xbox platforms. So that gives you some reasonable time to upgrade your computer if needed.
Requirements
Minimum System Requirements:
→ Windows XP/Vista
→ 1GB System RAM (XP) / 2GB System RAM (Vista)
→ 2.4 Ghz Intel Pentium 4 or equivalent processor
→ Direct X 9.0c compliant videocard with 256MB RAM (NVIDIA 6800 or better / ATI X850 or better) Recommended System Requirements:
→ Intel Core 2 Duo processor
→ 2 GB System RAM
→ Direct X 9.0c compliant video card with 512MB RAM (NVIDIA 8800 series, ATI 3800 series)
→ Supported Video Card Chipsets:
- NVIDIA GeForce 200 series
- NVIDIA GeForce 9800 series
- NVIDIA GeForce 9600 series
- NVIDIA GeForce 8800 series
- NVIDIA GeForce 8600 series
- NVIDIA GeForce 8500 series
- NVIDIA GeForce 8400 series
- NVIDIA GeForce 7900 series
- NVIDIA GeForce 7800 series
- NVIDIA GeForce 7600 series
- NVIDIA GeForce 7300 series
- NVIDIA GeForce 6800 series
- ATI HD 4800 series
- ATI HD 4600 series
- ATI HD 3800 series
- ATI HD 3600 series
- ATI HD 3400 series
- ATI HD 2900 series
- ATI HD 2600 series
- ATI HD 2400 series
- ATI X1900 series
- ATI X1800 series
- ATI X1600 series
- ATI X1300 series
- ATI X850 series