High-End Graphics for Mainstream Consumers – Meet the first 1 Gigabyte ATI Radeon HD 4670 Graphics Card CHATSWORTH, CA – Diamond Multimedia (www.diamondmm.com), a leading manufacturer of PC graphics cards, sound cards and communications products, launched today the ATI Radeon HD 4670 graphics card. The 4600 series of cards boast up to 3 times the performance of the previous generation of GPUs.The HD 4670 is a single slot card, PCIE 2.0, with 1024MB of DDR3 memory and a clock speed of 750 MHz. The memory