Asian tech site Expreview heard that the GeForce GTX 275 card has been delayed from April 6th to April 13th. The first Radeon HD 4890 samples are popping up, and the site claims they're not as fast as NVIDIA was expecting. Therefore the GPU giant decided it will cut the frequencies of the GeForce GTX 275, to drive more sales to the more expensive GeForce GTX 200 series cards.
Several brands of Radeon HD 4890 have reached store in Taiwan, but according to the leaked benchmarks, its performance doesn’t bring much surprise. And it would be a while before the release of Catalyst 9.4 Driver which is designed to optimize HD 4890.
Besides the adjustment of availability, the frequencies of GTX 275 will be reduced to somewhere lower than we reported. Viewed from this aspect, Radeon HD 4890 is not only below the expectations of AMD fans, but also below than that of NVIDIA.