On the example of PowerColor RADEON HD 3850 Extreme 512MB (720/1800 MHz).

Features:

• ATI RADEON HD 3850 GPU, 720 MHz (670 MHz official)
• Pixel processors: -
• Vertex processors: -
• Unified processors: 320
• Texture processors: 16
• ROPs: 16
• 512MB GDDR3 SDRAM in 8 Samsung chips; 1.0ns fetch, 900 (1800) MHz default memory clock
• 256-bit bus
• Supports DX10