AMD today introduced its Radeon HD 4800 series graphics cards, packing 800 stream processors and penetration price points.
AMD claims the Radeon HD 4800 series is twice as fast as the HD 3800 series. The two cards introduced today include the HD 4850 and HD 4870, both of which have similar specifications. Both cards have 800 stream processors and a PCI-e 2.0 interface.
The Radeon HD 4870 has a core clock of 750MHz and 512MB of GDDR5 memory running at 3.6GHz – yes, GHz. The GDDR5 memory coupled with a 256-bit interface provides an astounding 115.2GB/s of memory bandwidth. The 4870 has a dual-slot cooler and a maximum power consumption of 160 watts. It requires a 500W power supply, or 600W in CrossFireX mode.
The Radeon HD 4850 has a core clock of 625MHz, 512MB of GDDR3 memory running at 2GHz, and a 256-bit memory interface. It has a single-slot cooler and a maximum power consumption of 110 watts. It requires a 450W power supply, or 550W in CrossFireX mode.
The 4870 needs two 75W 6-pin PCI-e connectors, while the 4850 needs one. A list of certified power supplies can be found at the following link: http://ati.amd.com/certifiedPSU
Companies building versions of the HD 4800 series graphics cards are VisionTek, ASUS, PowerColor, MSI, GIGABYTE, GECUBE, Force3D, SAPPHIRE Technology, Diamond Multimedia, Club 3D, HIS (Hightech Information Systems) and Palit Multimedia.
Systems integrators launching ATI Radeon HD 4800 series include ABS, Alienware, AMAX, Canada Computers, CyberPower, Extreme PC Corporation, Falcon-Northwest, iBUYPOWER, Maingear, Systemax, Ultra Gaming and Velocity Micro.
The Radeon HD 4870 and 4850 are available immediately for an MSRP of $299 and $199 respectively.