Infopirate.org

Since the RV770 GPU's initial arrival, we have seen the technology used in the GPU migrate up and down AMD's product stack. At first, the RV770 powered only the ATI Radeon HD 4850 and 4870, but soon thereafter two RV770's were linked together to form the current flagship Radeon HD 4870 X2. Then the GPU was scaled down to bring out the Radeon HD 4600, 4500, and 4300 series of products. Ultimately, AMD ended up with competitive offerings at virtually every price point, ranging from $39 on up, to over $550 for the flagship product.

http://hothardware.com/Articles/ATI-Radeon-HD-4830-M... 

windows vista

Ever wondered what the difference between "low-def" (SD) and "high-def" (HD) was, and couldn't realistically apply it to real life? Here's a small photo set that showcases the differences between a lower definition shot and a higher definition camera. One picture has been touched up, but it doesn't affect the clarity or the resolution.