| GeForce GTX680- New Crown in June 2012 |
|
| June 2012 | |
Nvidia announced a GPU (graphical processing unit) card and claimed it to be the most powerful and most power efficient in March 2012. The card is GeForce GTX680. It is double the performance of the previous performance leader as in GTX580 but it consumes lesser electricity than GTX580. GTX680 GPU is made up of 3.4 billion transistors (this is an impressive quantity as the current top desktop CPU Core i7-3960X has 2.27 billion only) and yet its thermal design power limit is 195 watt as against 244 watt for GTX580. The performance of GTX680 is shown in the chart as obtained from http://www.geforce.com/whats-new/articles/introducing-the-geforce-gtx-680-gpu/. At this date (June 2012), we are able to supply GTX670 only as the new crown has not reached our shores yet.
![]()
A bit of recent history would help in understanding how this new crown is placed. Just over two years ago, NVIDIA launched the Fermi architecture with the GeForce GTX 480. Named after the Italian nuclear physicist Enrico Fermi, this new architecture brought two key advancements. First, it brought full geometry processing to the GPU, enabling a key DirectX 11 technique called tessellation with displacement mapping. Used in video games this technique greatly improves the geometric realism of water, terrain, and game characters. Second, Fermi greatly improved the GPU performance in general computation that would be needed for visualisation and beyond. Now Nvidia has released the Kepler architecture with GTX680. Johannes Kepler was a German Astronomer (1571-1630) and he was well recorded in history for his law of planetary motions. Why Nvidia named a newer technology with an older person is not known to us! Our Fiordland National Park has a range of mountains named after Kepler too, called the Kepler Mountains and a 3-day Walking Trail known as the Kepler Track through the Mountains.
First, Kepler Architecture has a redesigned streaming multiprocessor (SMX) which is the most important building block of GPU for optimal performance per watt. Second, it has a new feature called GPU Boost that dynamically increases clock speed to improve performance within the card's power budget. SMX has 192 CUDA cores, and GTX680 has a total of 1536 CUDA cores. GTX670 has 1344 cores. For reference, GTX580 has 512 cores only. The new series has PCI Express v3 interface. The current model of GTX570 graphics card has 2x DVI, 1x HDMI, and 1x Display Port for graphics output. GeForce is for the consumer market such as for online games with new features such as FXAA, TXAA, and Adaptive V-Sync for smooth gaming experience. Nvidia will progressively release Kepler to Quadro for the professional 3D CAD and content creation market and to Tesla for the high performance computing market over the next 12 months. |


