Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Diamond AMD R9 270X PCIE GDDR5 2GB Memory Graphics Video Card
Product description: Package Content: Diamond AMD R9 270X PCIE GDDR5 2GB Memory Graphics Video Card Quick Installation Guide Installation CD Crossfire connector
Product feature: AMD Eyefinity Technology Broaden your horizons. Tap into the full potential of your GPU by gaming on up to 3 displays simultaneously with AMD Eyefinity technology., PCI Express based PC is required with one X16 lane graphics slot available on the motherboard, 500W (or greater) power supply with one 75W 6-pin PCI Express power connector recommended7, 4k Gaming Incredible realism and breathtaking detail dont stop at High Definition. With the power to create stunning scenes four times larger than HD, youll be ready for anything that comes your way.
Product brand: Diamond Multimedia
Target attributes: Output Resolution
Answer: attribute: output resolution
value: None
source: None