MSI R6950 Twin Frozr III 1G/OC Radeon HD 6950 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card Propeller Blade Technology MSI's exclusive innovation design.20% more airflow. Cool down more components on the PCB.11 cooler and 13.9dB quieter than reference HD 6950. Military Class ll Component Hi-C CAP for GPU provides more precise voltage.SFC (Super Ferrite Choke) has higher current for better overclocking ability. All Solid CAPs have longer lifespan MSI Exclusive P/S Switch Function Two fan speed profiles - Performance / Silence Performance Mode provides best cooling demand; Silent Mode balances noise and GPU Temperature Chipset: Radeon HD6950 Engine Clock: 850 MHz Video Memory: 1GB DDR5 Memory Clock: 5200 MHz Memory Interface: 256-bit Bus: PCI-Express 2.0 x16 RAMDAC: 400 MHz Thermal: Fansink