GeForce 20 series

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GeForce 20 series
GeForce RTX 20 Series logo with slogan.png
Release dateSeptember 20, 2018
CodenameTU10x
ArchitectureTuring
ModelsGeForce RTX series
Transistors and fabrication process
  • 10.6B 12 nm (TU106)
  • 13.6B 12 nm (TU104)
  • 18.6B 12 nm (TU102)
Cards
High-end
  • GeForce RTX 2070[1]
  • GeForce RTX 2080[2]
EnthusiastGeForce RTX 2080 Ti[3]
API support
Direct3DDirect3D 12.0 (feature level 12_1)
OpenCLOpenCL 1.2
OpenGLOpenGL 4.6
VulkanVulkan 1.1
History
PredecessorGeForce 10 series
SuccessorTBA

The GeForce RTX 20 Series is a family of graphics processing units developed by Nvidia, and was announced at Gamescom on August 20, 2018.[4] It is the successor to the GeForce 10 series,[5] and started shipping on September 20, 2018.[6]

Architecture[edit]

The RTX 20 series is based on the Turing microarchitecture and features real-time ray tracing.[7] This is accelerated by the use of new RT cores, which are designed to process quadtrees and spherical hierarchies, and speed up collision tests with individual triangles.

The ray tracing performed by the RT cores can be used to produce reflections, refractions and shadows, replacing traditional raster techniques such as cube maps and depth maps. Instead of replacing rasterization entirely, however, the information gathered from ray tracing can be used to augment the shading with information that is much more photo-realistic, especially in regards to off-camera action. This can only be utilized on games that support ray-tracing, which led to some controversy at launch because few games supported the feature at the time.

The second-generation Tensor cores (succeeding Volta's) work in cooperation with the RT cores, and are used to fill in the blanks in a partially ray traced image, a technique known as de-noising. Another of the applications of the Tensor cores is a new method to replace anti-aliasing called DLSS (deep learning super-sampling).[8] The Tensor cores perform the result of deep learning on supercomputers to codify how to, for example, increase the resolution of images. In the Tensor cores' primary usage, a problem to be solved is analyzed on a supercomputer, which is taught by example what results are desired, and the supercomputer determines a method to use to achieve those results, which is then done with the consumer's Tensor cores. These methods are delivered "over the air" to consumers.

New features in Turing:

Nvidia bins the GPUs, leading to Founder's Edition boards having chips that overclock better. These are the "400A" versions of normal chips.

Development platform[edit]

Nvidia RTX is the development platform introduced with the GeForce 20 series. RTX uses Microsoft's DXR, Nvidia's OptiX, and Vulkan for access to ray tracing.[10] The ray tracing technology used in the RTX Turing GPUs was in development at Nvidia for 10 years.[11]

Chipset table[edit]

Model Launch Code name(s) Fab (nm) Transistors (billion) Die size (mm2) Bus interface Shader processors Texture mapping units Render output units Ray Tracing Cores Tensor Cores[a] SM Count[b] L2 Cache (MB) Clock speeds Fillrate Memory Processing power (GFLOPS) Ray tracing performance TDP (watts) NVLink Support Launch price (USD)
Base core clock (MHz) Boost core clock (MHz) Memory (MT/s) Pixel (GP/s)[c] Texture (GT/s)[d] Size (GiB) Bandwidth (GB/s) Bus type Bus width (bit) Single precision (Boost) Double precision (Boost) Half precision (boost) Rays/s (Billions) RTX-OPS (Trillions) Tensor FLOPS (Trillions) MSRP Founders Edition
GeForce RTX 2070[12] October 17, 2018 TU106-400-A1 12 10.8 445 PCIe 3.0 x16 2304 144 64 36 288 36 4 1410 1620 14000 90.24 (103.68) 203.4 (233.28) 8 448 GDDR6 256 6497 (7465) 203 (233.3) 12994 (14930) 6 45 59.7 175 No $499 ?
TU106-400A-A1 $499+ $599
GeForce RTX 2080[13] September 20, 2018 TU104-400A-A1 13.6 545 2944 184 64 46 368 46 4 1515 1710 96.96 (109.44) 278.76 (314.64) 448 256 8920 (10068) 278.8 (314.6) 17840 (20136) 8 60 80.5 215 2-way NVLink $699 $799
GeForce RTX 2080 Ti[14] September 27, 2018 TU102-300A-K1-A1 18.6 754 4352 272 88 68 544 68 6 1350 1545 118.8 (135.96) 367.2 (420.24) 11 616 352 11750 (13448) 367.2 (420.2) 23500 (26896) 10 78 107.6 250 $999 $1,199
  1. ^ A Tensor core is a mixed-precision FPU specifically designed for matrix arithmetic.
  2. ^ The number of Streaming multi-processors on the GPU.
  3. ^ Pixel fillrate is calculated as the lowest of three numbers: number of ROPs multiplied by the base core clock speed, number of rasterizers multiplied by the number of fragments they can generate per rasterizer multiplied by the base core clock speed, and the number of streaming multiprocessors multiplied by the number of fragments per clock that they can output multiplied by the base clock rate.
  4. ^ Texture fillrate is calculated as the number of TMUs multiplied by the base core clock speed.

See also[edit]

References[edit]

  1. ^ "Introducing NVIDIA GeForce RTX 2070 Graphics Card". NVIDIA. Retrieved 2018-08-20.
  2. ^ "NVIDIA GeForce RTX 2080 Founders Edition Graphics Card". NVIDIA. Retrieved 2018-08-20.
  3. ^ "Graphics Reinvented: NVIDIA GeForce RTX 2080 Ti Graphics Card". NVIDIA. Retrieved 2018-08-20.
  4. ^ "GeForce RTX 2080 launch live blog: Nvidia's Gamescom press conference as it happens". TechRadar. Retrieved 2018-08-21.
  5. ^ "Nvidia unveils powerful new RTX 2070, RTX 2080, RTX 2080 Ti graphics cards". Polygon. Retrieved 2018-08-20.
  6. ^ "Nvidia's new RTX 2080, 2080 Ti video cards shipped on Sept 20, starting at $799". Ars Technica. Retrieved 2018-08-20.
  7. ^ "Nvidia announces RTX 2000 GPU series with '6 times more performance' and ray-tracing". The Verge. Retrieved 2018-08-20.
  8. ^ "NVIDIA Deep Learning Super-Sampling (DLSS) Shown To Press". www.legitreviews.com. Retrieved 2018-09-14.
  9. ^ "The NVIDIA Turing GPU Architecture Deep Dive: Prelude to GeForce RTX". AnandTech.
  10. ^ "NVIDIA RTX™ platform". Nvidia.
  11. ^ https://www.youtube.com/watch?v=02h_dNl-C-s
  12. ^ "Introducing NVIDIA GeForce RTX 2070 Graphics Card". NVIDIA.
  13. ^ "NVIDIA GeForce RTX 2080 Founders Edition Graphics Card". NVIDIA.
  14. ^ "Graphics Reinvented: NVIDIA GeForce RTX 2080 Ti Graphics Card". NVIDIA.

Further reading[edit]

External links[edit]