The SMX are the key method for Kepler's power efficiency as the whole GPU uses a single "Core Clock" rather than the double-pump "Shader Clock". The Kepler architecture employs a new Streaming Multiprocessor Architecture called SMX.
Streaming Multiprocessor Architecture (SMX)
#NVIDIA GTX 680 SERIES#
Kepler based members of the 600 series add the following standard features to the GeForce family: The GeForce 600 series contains products from both the older Fermi and newer Kepler generations of Nvidia GPUs. Kepler is named after the German mathematician, astronomer, and astrologer Johannes Kepler.Īsus Nvidia GeForce GTX 650 Ti, a PCI Express 3.0 ×16 graphics card While still shy of the theoretical 7 GHz limitation of GDDR5, this is well above the 4 GHz speed of the memory controller for Fermi. To accomplish this, Nvidia needed to design an entirely new memory controller and bus. The GPU can access any texture loaded into memory, increasing the number of available textures and removing the performance penalty of binding.įinally, with Kepler, Nvidia was able to increase the memory clock to 6 GHz. With bindless textures, both limitations are removed. The second was that the CPU was doing unnecessary work: it had to load each texture, and also bind each texture loaded in memory to a slot in the binding table. This led to two limitations: one was that because the table was fixed in size, there could only be as many textures in use at one time as could fit in this table (128). Previously, textures needed to be bound by the CPU to a particular slot in a fixed-size table before the GPU could reference them. Kepler also introduced a new form of texture handling known as bindless textures.
This is not only because the cores are more power efficient (two Kepler cores using about 90% of the power of one Fermi core, according to Nvidia's numbers), but also because the reduction in clock speed delivers a 50% reduction in power consumption in that area. By abandoning the shader clock found in their previous GPU designs, efficiency is increased, even though it requires more cores to achieve similar levels of performance. The primary way Nvidia achieved this goal was through the use of a unified clock. Where the goal of the previous architecture, Fermi, was to increase raw performance (particularly for compute and tessellation), Nvidia's goal with the Kepler architecture was to increase performance per watt, while still striving for overall performance increases. 2.1 Streaming Multiprocessor Architecture (SMX).The power consumption of the GTX 680 desktop card is rated at 195 Watt TDP and therefore two 6-pin power connectors are needed to power the card. In some cases, even higher resolutions or additional AA/AF are possible.
#NVIDIA GTX 680 1080P#
Demanding games like Metro: Last Light can be played fluently in 1080p and maximum detail settings. Therefore, even the fastest mobile GPUs like the GeForce GTX 780M are outperformed by more than 30 percent. The similar named mobile GeForce GTX 680M is also based on the GK104 chip, but offers only 1344 shader as the desktop GTX 670 and a low clock rate of 720 MHz.ĭepending on game and settings, the performance of the GTX 680 is similar to a Radeon R9 280X. The core clock can be boosted up to 1058 MHz (from 1006 base clock) and the memory is clocked at 3004 MHz (GDDR5). It is based on the GK104 chip and manufactured in 28 nm at TSMC. The Nvidia GeForce GTX 680 is a DirectX 11 high-end desktop graphics card. 3D Printing, 5G, Accessory, AI, Alder Lake, AMD, Android, Apple, ARM, Audio, Benchmark, Biotech, Business, Camera, Cannon Lake, Cezanne (Zen 3), Charts, Chinese Tech, Chromebook, Coffee Lake, Comet Lake, Console, Convertible / 2-in-1, Cryptocurrency, Cyberlaw, Deal, Desktop, E-Mobility, Education, Exclusive, Fail, Foldable, Gadget, Galaxy Note, Galaxy S, Gamecheck, Gaming, Geforce, Google Pixel, GPU, How To, Ice Lake, Intel, Intel Evo, Internet of Things (IoT), iOS, iPad, iPad Pro, iPhone, Jasper Lake, Lakefield, Laptop, Launch, Leaks / Rumors, Linux / Unix, List, Lucienne (Zen 2), MacBook, Mini PC, Monitor, MSI, OnePlus, Opinion, Phablet, Radeon, Raptor Lake, Renoir, Review Snippet, Rocket Lake, Ryzen (Zen), Science, Security, Single-Board Computer (SBC), Smart Home, Smartphone, Smartwatch, Software, Storage, Tablet, ThinkPad, Thunderbolt, Tiger Lake, Touchscreen, Ultrabook, Virtual Reality (VR) / Augmented Reality (AR), Wearable, Wi-Fi 7, Windows, Workstation, XPS, Zen 3 (Vermeer), Zen 4
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