Here are the minimum and recommended system specs for Dark Souls 2 on the PC.
Minimum:
OS: Windows XP SP3, Windows Vista SP2, Windows 7 SP1, Windows 8
Processor: AMD Phenom II X2 555 3.2Ghz or Intel Pentium Core 2 Duo E8500 3.17Ghz
Memory: 2 GB RAM
Graphics: NVIDIA GeForce 9600GT, ATI Radeon HD 5870
Hard Drive: 8 GB available space
Sound Card: Compatible with DirectX 9.0c or higher
Network: Internet connection required for online play and product activation

Recommended:
OS: Windows 7 SP1
Processor: Intel CoreTM i3 2100 3.10GHz or AMD A8 3870K 3.0GHz
Memory: 4 GB RAM
Graphics: NVIDIA GeForce GTX 465 or higher, ATI Radeon HD 6870 or higher
Hard Drive: 8 GB available space
Sound Card: Compatible with DirectX 9.0c or higher
Network: Internet connection required for online play and product Activation

Doesn't seem like there's anything really major listed there, which is always nice to see.