Where is gk 2

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Last updated: April 8, 2026

Quick Answer: GK 2 refers to the second generation of the GK series of graphics processing units (GPUs) developed by NVIDIA, introduced in 2012. These GPUs, based on the Kepler architecture, powered the GeForce 600 and 700 series, with the flagship GeForce GTX 680 launching on March 22, 2012. They featured significant improvements in power efficiency and performance, with the GTX 680 offering up to 2.1 teraflops of compute performance.

Key Facts

GK 2 GPUs were based on NVIDIA's Kepler architecture, introduced in 2012.
The flagship GeForce GTX 680 launched on March 22, 2012, with 1536 CUDA cores.
GK 2 GPUs offered up to 2.1 teraflops of compute performance in the GTX 680.
These GPUs reduced power consumption by up to 50% compared to previous Fermi architecture.
GK 2 supported technologies like GPU Boost and NVIDIA Surround for enhanced gaming.

Overview

GK 2 refers to the second generation of the GK series of graphics processing units (GPUs) developed by NVIDIA Corporation, a leading technology company founded in 1993. These GPUs were part of the Kepler architecture, which succeeded the Fermi architecture and was introduced in 2012. The GK 2 series powered NVIDIA's GeForce 600 and 700 series of consumer graphics cards, marking a significant shift in GPU design towards improved energy efficiency and performance per watt. This architecture was named after the German astronomer Johannes Kepler, continuing NVIDIA's tradition of using scientists' names for its GPU architectures.

The development of GK 2 GPUs began in the late 2000s, with NVIDIA aiming to address the growing demand for more power-efficient graphics solutions in the face of increasing thermal and power constraints. Kepler was officially announced at the GPU Technology Conference in 2012, with the first GK 2-based card, the GeForce GTX 680, launching on March 22, 2012. This architecture represented a major redesign from Fermi, focusing on scalability and efficiency to cater to both gaming and professional markets. Over its lifecycle, GK 2 GPUs were used in millions of devices worldwide, from desktop PCs to laptops and workstations.

How It Works

GK 2 GPUs operate through a combination of architectural innovations and software optimizations to deliver high-performance graphics and compute capabilities.

Key Point 1: Kepler Architecture Design: GK 2 GPUs featured a new streaming multiprocessor (SMX) design with 192 CUDA cores per SMX, compared to 32 in Fermi. The GeForce GTX 680, for example, had 8 SMX units totaling 1536 CUDA cores. This design allowed for better parallelism and throughput, with each SMX optimized for power efficiency through techniques like clock gating and reduced voltage operation.
Key Point 2: GPU Boost Technology: Introduced with GK 2, GPU Boost dynamically adjusted clock speeds based on thermal and power headroom. In the GTX 680, this could boost the base clock from 1006 MHz to up to 1058 MHz, improving performance by up to 5% in real-time without user intervention. This technology helped maximize performance within safe thermal limits, typically around 98°C.
Key Point 3: Memory and Bandwidth: GK 2 GPUs utilized GDDR5 memory with a 256-bit memory interface. The GTX 680 had 2 GB of VRAM with a memory clock of 1502 MHz, providing a bandwidth of 192.2 GB/s. This supported high-resolution gaming and multitasking, with features like NVIDIA Surround enabling multi-monitor setups up to 5760x1080 resolution.
Key Point 4: Power Efficiency: GK 2 GPUs significantly reduced power consumption, with the GTX 680 having a TDP of 195 watts, down from 250 watts in the Fermi-based GTX 580. This was achieved through a 28 nm manufacturing process and architectural tweaks, resulting in up to 50% better performance per watt compared to previous generations.

Key Comparisons

Feature	NVIDIA GK 2 (Kepler)	AMD GCN 1.0 (Southern Islands)
Launch Date	March 22, 2012	January 9, 2012
Flagship Model	GeForce GTX 680	Radeon HD 7970
CUDA/Stream Processors	1536 CUDA cores	2048 stream processors
Performance (Teraflops)	Up to 2.1 TFLOPS	Up to 3.8 TFLOPS
Power Consumption (TDP)	195 watts	250 watts
Memory Bandwidth	192.2 GB/s	264 GB/s

Why It Matters

Impact 1: Gaming Evolution: GK 2 GPUs enabled higher frame rates and better visual fidelity in games, supporting DirectX 11.1 and OpenGL 4.3. Titles like "Battlefield 3" and "The Witcher 2" saw performance improvements of up to 30% on GK 2 cards compared to previous generations, driving the adoption of 1080p and multi-monitor gaming setups.
Impact 2: Energy Efficiency: With up to 50% better performance per watt, GK 2 GPUs reduced electricity costs and environmental impact. For a typical gamer using a GTX 680 for 4 hours daily, this could save approximately 20 kWh per month compared to older cards, contributing to greener computing practices.
Impact 3: Professional and Scientific Use: Beyond gaming, GK 2 GPUs were used in workstations for tasks like 3D rendering and scientific simulations, thanks to their CUDA support. In fields like medical imaging, they accelerated processing times by up to 10x, enabling faster diagnostics and research breakthroughs.

Looking ahead, the legacy of GK 2 GPUs continues to influence modern GPU design, with subsequent architectures like Maxwell and Pascal building on its efficiency gains. As technology advances, the principles of power efficiency and scalable performance pioneered by Kepler remain critical for emerging applications in AI, virtual reality, and beyond, ensuring that GK 2's impact endures in the evolution of computing hardware.