ATI Radeon HD 4670 CrossFireX: Technical Characteristics and Power Consumption
Like its senior RV770-based mates, the Radeon HD 4670 offers full support for CrossFireX technology with up to four graphics cards working together in one subsystem. Compared with single cards, the Radeon HD 4670 CrossFireX tandem looks like follows:
It is clear that the two-card configuration boasts solid technical parameters: 128 superscalar shader processors (with a total of 640 ALUs), 64 texture processors and 16 raster back-ends. Considering the high core frequency (750MHz), this tandem is theoretically comparable to the Radeon HD 4870 in terms of performance and even better than it in terms of texture-mapping speed.
The two Radeon HD 4670 working in CrossFireX mode consume a total of 94 watts, which is lower than the power consumption of the Radeon HD 4850/4870 or the GeForce GTX 260 Core 216 based on the 55nm G92 core but higher than that of the GeForce 9800 GTX+/GeForce GTS 250.
So, a Radeon HD 4670 CrossFireX configuration looks like a viable solution, but technical characteristics do not guarantee a success in real-life applications. So, let’s move on to practical tests.