Capcom has issued a fact sheet for Resident Evil HD that has Windows PC system specifications for the survival/horror remake that's due for release next week. These are also now posted on the game's Steam page as well as right here:

MINIMUM:
OS: Windows® 7 SP1 / Windows® 8.1
Processor: Intel® Core™ 2 Duo 2.4 GHz, AMD Athlon™ X2 2.8 GHz, or better
Memory: 2 GB RAM
Graphics: NVIDIA® GeForce® GTX260, ATI Radeon HD 6790, or better
Monitor Resolution: 1024×768 or higher
DirectX: Version 9.0c
Network: Broadband Internet connection
Hard Drive: 20 GB available space
Sound Card: DirectSound compatible (must support DirectX 9.0c or higher)
Additional Notes:
Controller: Supports Keyboard +Mouse. Genuine Xbox 360 PC compatible controller or comparable XInput-based gamepad recommended.
Note: Some high end integrated graphics chips and modern laptop class discrete GPUs may work but have not been tested, nor are they officially supported by Capcom.

RECOMMENDED:
OS: Windows® 7 SP1 / Windows® 8.1
Processor: Intel® Core™ 2 Quad 2.7 GHz, AMD Phenom™ II X4 3.0 GHz or better
Memory: 4 GB RAM
Graphics: NVIDIA® GeForce® GTX 560, ATI Radeon HD 6950, or better
Monitor Resolution: 1280×720 or higher
DirectX: Version 9.0c
Network: Broadband Internet connection
Hard Drive: 20 GB available space
Sound Card: DirectSound compatible (must support DirectX 9.0c or higher)
Additional Notes:
Controller: Supports Keyboard +Mouse. Genuine Xbox 360 PC compatible controller or comparable XInput-based gamepad recommended.
Note: Some high end integrated graphics chips and modern laptop class discrete GPUs may work but have not been tested, nor are they officially supported by Capcom.