Radeon HD4890 vs GeForce GTX275 on April 9
Radeon HD 4890 (55nm RV790)

* HD 4890 is slated for launch on April 9th instead of 6th
* Cards have been shipped out to distributors and reviewers already
* 800 stream processors
* 1GB GDDR5 memory on 256-bit memory interface
* Clocks : 850MHz core and 975MHz memory
* Internal benchmarks claim 6% faster than RV770
* Expect to retail at USD$249

GeForce GTX 275 (55nm GT200)

* Expect to launch on April 9th as well
* No card samples yet even for AIC partners
* 240 shader processors
* 896MB GDDR3 memory on 448-bit memory interface
* Clocks : 633MHz core, 1404MHz memory and 1161MHz shader (Not final yet)
* Simulated benchmarks by partners reveals that it is slightly faster than GTX 260
* Expect to retail between US$229-$279
http://vr-zone.com/articles/radeon-h....html?doc=6779