The GTX 590 is a dual-GPU card, similar to past releases such as the GTX 295, and boasted the potential to handle Nvidia's 3D Vision technology by itself. On March 24, 2011, the GTX 590 was launched as the flagship graphics card for Nvidia. Price-wise, the new card trod into the range occupied by the GeForce GTX 460 (768 MB) and the Radeon HD 6790. Performance was shown to be at least comparable and up to 12% faster than the current Radeon HD 5770. Although the GTX 550 Ti is a GF116 mainstream chip, Nvidia chose to name its new card the GTX 550 Ti, and not the GTS 550. On February 17, 2011, it was reported that the GeForce GTX 550 Ti would be launching on March 15, 2011. With its more than 30% improvement over the GTX 460, and performance in between the Radeon HD 68 1GB, the GTX 560 Ti directly replaced the GeForce GTX 470. On January 25, 2011, Nvidia launched the GeForce GTX 560 Ti, to target the "sweet spot" segment where price/performance ratio is considered important. The new GF110 GPU was enhanced with full speed FP16 filtering (the previous generation GF100 GPU could only do half-speed FP16 filtering) and improved z-culling units. The Nvidia GeForce GTX 580 graphics card is the first in the Nvidia GeForce 500 series to use a fully enabled chip based on the refreshed Fermi architecture, with all 16 stream multiprocessors clusters and all six 64-bit memory controllers active. The refreshed Fermi chip includes 512 stream processors, grouped in 16 stream multiprocessors clusters (each with 32 CUDA cores), and is manufactured by TSMC in a 40 nm process. Like the Nvidia GeForce 400 series graphics cards, the Nvidia Geforce 500 series supports DirectX 11.0, OpenGL 4.6, and OpenCL 1.1. The Nvidia Geforce 500 series graphics cards are significantly modified versions of the GeForce 400 series graphics cards, in terms of performance and power management.
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