What does AMD have up its sleeve for low-end Radeon HD 4000-series derivatives? We first heard about an RV730 graphics processor meant to power such products a couple of weeks ago, and today, German site Hardware-Infos brings detailed specifications for RV730-based Radeon HD 4650 and 4670 GPUs.
Reportedly, both offerings will feature 320 stream processors—just like today's Radeon HD 3850 and 3870—but with memory interfaces only 128 bits wide. Core clock speeds will range up to 750MHz for the Radeon HD 4670, while memory will top out at 1,000MHz (presumably an "effective" 2,000MHz). The spec sheet mentions 480 gigaFLOPS, 32GB/s of memory bandwidth, and a 59W power envelope for the 4670, compared to a respective 429 gigaFLOPS, 53GB/s, and 95W for the Radeon HD 3850. As for the 4650, that card will crank out a tamer 384 gigaFLOPS with up to 21.3GB/s of memory bandwidth.
Assuming those specs didn't originate from a demented homeless man, the Radeon HD 4670 could turn out to be a fairly potent low-end offering. Fudzilla even claims in a separate report that the upcoming card will outperform the 3850 when it hits stores in September.