The ATI Radeon HD 4850 reference design uses a single-slot cooler and is almost identical to the Radeon HD 3850. The Radeon HD 4850 relies upon a single 6-pin PCI Express power connector. Like other ATI CrossFireX-supportive graphics cards, along the upper edge of the Radeon HD 4850 are these connectors for multi-GPU use. Similar to the Radeon HD 3450 and Radeon HD 3650, the Radeon HD 4800 series support DVI, HDMI, and DisplayPort interfaces. For this testing we were using dual Diamond Radeon HD 4850 graphics cards. This Diamond model opts for two dual-link DVI connectors and the third output is for use with the included connector to interface with HDTVs.
The Radeon HD 4850 is approximately the same length as both the Radeon HD 3850 and Radeon HD 3870.
The ATI Radeon HD 4850 has an MSRP of $199 USD and the Radeon HD 4870 has debuted at $299 USD. On Windows both cards have shown to be severe competition to the NVIDIA GeForce 9800GTX and NVIDIA GTX 200 series, but on the following pages we are looking at how the performance stacks up on Linux.