NVIDIA has announced its latest graphics card, the GeForce GTX 275. Based on the GT200 architecture, it features 240 processor cores operating at 1404 MHz, 80 texture processing units, a 448-bit memory interface, and an 896 MB frame buffer. NVIDIA is positioning it between the GeForce GTX 260 and the GeForce GTX 285 in price and performance.
Originally, the GTX 275 was supposed to launch on April 14, but NVIDIA was forced to pull it in due to the launch of the ATI Radeon HD 4890. The Radeon 4890 offers similar performance to the GTX 275, but DailyTech has learned that over 50,000 parts have already shipped out to the channel and are available for purchase.
In contrast, NVIDIA will only have several thousand GTX 275 video cards for sale. Although both chips are built on a 55nm process at TSMC, ATI has more experience at this node. Additionally, the RV790 chip that the Radeon 4890 uses is much smaller than the G200b chip that the GTX 275 uses.
The G200b has 1.4 billion transistors, while the RV790 only has 959 million. This affects chip yields, and ultimately the profit that NVIDIA will be able to make. When available, the GTX 275 will sell for the same $249 price point as the Radeon 4890.
ATI Radeon HD 4890
ATI Radeon HD 4870
GTX 260 Core 216
ATI Radeon HD 4850
Texture Address / Filtering
80 / 80
64 / 64
Memory Bus Width