By default, Dark Souls is a very poor port to PC. Luckily, modder Durante has come to the rescue with his now very popular DSFix mod suite, which adds a variety of options and graphics effects to the game and, most recently, offers HUD tweaks.
If you're curious to see what the different settings do, read on for a visual comparison and explanation of each.
Base settings here for testing were 1680x1050 resolution, in-game AA off, and all other settings at defaults. Note performance on my setup was impacted little or not at all by any of the settings, so if you're on something similar or greater, feel free to crank them up. Users on low end setups wanting to get a little extra visual flair should do well by setting their native resolution within Dsfix's .ini file and putting SMAA at 1x, at the least.
Processor: AMD Phenom II X6 1055T 2.8GHz (Stock)
Memory: Corsair XMS3 8GB DDR3-1600 (1333 mhZ)
Hard Drive: Western Digital Caviar Black 640GB 3.5" 7200RPM
Video Card: XFX Radeon HD 6950 2GB (Stock)
Driver: 12.8, no CAP
Input: Logitech G400 mouse @ 1600dpi, Leopold Tenkeyless Linear Touch Mechanical Keyboard
OS: Windows XP , Windows Vista, Windows 7, or newer
Processor: Intel Core 2 Duo E6850 GHz+ or AMD Phenom II X2 545 3.0 GHz+
Memory: 2GB RAM
Hard Drive: 8GB free space
Video Card: GeForce 9800 GTX+ or ATI Radeon HD 4870+
Additional: Online play requires software installation of and log-in to Games For Windows - LIVE, Microsoft Xbox 360® Controller for Windows® (or equivalent) is strongly recommended.