AMD is planning a major update for the ATI Radeon HD 5670 mainstream graphics card. Currently based on the 40 nm Redwood core with specifications which include 400 stream processors, 512 MB / 1 GB of GDDR5 memory across a 128-bit wide memory interface, the updated HD 5670 will be based on the larger Juniper core (on which are based HD 5750 and HD 5770). On the HD 5670, the Juniper will have 640 of its 800 stream processors enabled, while having the same memory interface of 128-bit GDDR5 @ 1000 MHz (4 GHz effective).
The core will be clocked at 750 MHz. Since the nomenclature remains the same, it is safe to assume that the price will be remain unchanged, around $90 for the 512 MB, and $110 for the 1 GB variant. Leading AIB partners such as PowerColor and Sapphire seem to be ready with their board designs which are essentially identical to those of their Radeon HD 5700 series products. Unlike the HD 5770 reference, the new HD 5670 will be able to make do without an additional PCI-Express power input. Looking purely at the specifications, the new HD 5670 will be able to perform on par with the Radeon HD 4770 in present applications, with the added DirectX 11 and hardware tessellation support. With CrossFireX connectors on some designs, these card will have the ability to pair with more than two of their kind. There is no word yet on the availability.