ATI recently added a new graphics card to the 4800 series, the ATi HD 4830, mainly to compete with the 9800GT. A budget card aimed at the lower segment for everyday users to give their systems a little boost in power to claim their own gaming systems. The card samples sent out by AMD did show up with 560 shader processors instead of the 640 as specified, however a quick BIOS flash gave us access to original 4830 specifications for out test.

Specifications
  • 956 million transistors on 55nm fabrication process
  • GPU clock: 575MHz
  • Memory clock: 900MHz 
  • Memory type: GDDR3
  • PCI Express 2.0 x16 bus interface 
  • 256-bit GDDR3 memory interface 
  • Microsoft® DirectX® 10.1 support 
  • Shader Model 4: Unified
  • Superscalar Shader Architecture
  • 640 stream processing units
  • Anti-aliasing features
  • Multi-sample anti-aliasing (2, 4, or 8 samples per pixel)
  • Up to 24x Custom Filter Anti-Aliasing (CFAA) for improved quality
  • Texture filtering features: 2x/4x/8x/16x high quality adaptive anisotropic filtering modes (up to 128 taps per pixel)
  • OpenGL 2.1 support
  • ATI Avivo™ HD Video and Display Platform
  • Two independent display controllers
  • ATI CrossFireX™ Multi-GPU Technology7
  • Scale up rendering performance and image quality with two, three, or four GPUs