Todd Hollenshead, id's chief executive, said Doom 3 will require:

• A 1.5-gigahertz Intel Pentium 4 chip or AMD Athlon 1500.
• 384 megabytes of memory.
• Two gigabytes of hard drive space.
• An nVidia GeForce 3 graphics card or better; or an ATI Technologies 8500 or better.

Это игра!!! Игра, представляете? минимальные требования! А нормально играть она будет на

"The ideal is 3 GHz or better"
"I'd recommend 512 MB, and adding up to a gigabyte would be smart"
"you'll need at least 4 GB free"
"look for at least 128 MB of video memory"

http://www.chron.com/cs/CDA/ssistory.mpl/tech/weekly/2690450