On the fence about which version of BioShock you'll be picking up? It's inevitable that you'll purchase the thing, believe me, it's just a question of whether your PC is up to the processing challenge. My underpowered PC doesn't quite make the cut, hovering right around the minimum system requirements which is wholly unacceptable, so it's going to be the Xbox 360 version—or, possibly, the PLAYSTATION 3 version, should 2K Games announce such a thing. Gamers looking to finalize their NewEgg orders, however, will want to read on to see what BioShock needs and wants from a hardware set up.
Operating Systems:Windows XP (with Service Pack 2) orWindows VistaMinimum System Requirements:
CPU: Pentium 4 2.4GHz Single Core processor
System RAM: 1GB
Video Card: Direct X 9.0c compliant video card with 128MB RAM (NVIDIA 6600 or better/ATI X1300 or better, excluding ATI X1550).
Sound Card: 100% direct X 9.0c compatible sound card
Hard disk space: 8GB free space
Recommended System Requirements:
CPU: Intel Core 2 Duo processor
System RAM: 2GB
Video card:
DX9: Direct X 9.0c compliant video card with 512MB RAM (NVIDIA GeForce 7900 GT or better)
DX10: NVIDIA GeForce 8600 or better
Sound Card: Sound BlasterĀ® X-Fiā„¢ series (Optimized for use with Creative Labs EAX ADVANCED HD 4.0 or EAX ADVANCED HD 5.0 compatible sound cards)

Important Note: Game requires Internet connection for activation
So... do you make the cut?
Finalized PC Specs are here! [The Cult of Rapture forums, via IGN]