GeForce 20 series

The RTX 20 series is based on the Turing microarchitecture and features real-time hardware ray tracing.[7] The cards are manufactured on an optimized 14 nm node from TSMC, named 12 nm FinFET NVIDIA (FFN).[8] This real-time ray tracing 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 effects such as reflections, refractions, shadows, depth of field, light scattering and caustics, replacing traditional raster techniques such as cube maps and depth maps. Instead of replacing rasterization entirely, however, ray tracing is offered in a hybrid model, in which the information gathered from ray tracing can be used to augment the rasterized shading for more photo-realistic results.

The second generation Tensor Cores (succeeding Volta's) work in cooperation with the RT cores, and their AI features are used mainly to two ends: firstly, de-noising a partially ray traced image by filling in the blanks between rays cast; also another application of the Tensor cores is DLSS (deep learning super-sampling), a new method to replace anti-aliasing, by artificially generating detail to upscale the rendered image into a higher resolution.[9] The Tensor cores apply deep learning models (for example, an image resolution enhancement model) which are constructed using supercomputers. The problem to be solved is analyzed on the supercomputer, which is taught by example what results are desired. The supercomputer then outputs a model which is then executed on the consumer's Tensor cores. These methods are delivered to consumers as part of the cards' drivers.

New features in Turing:

• CUDA Compute Capability 7.5
• Mesh shaders[10]
• Ray tracing (RT) cores – bounding volume hierarchy acceleration[11]
• Tensor (AI) cores – neural net artificial intelligence – large matrix operations
• New memory controller with GDDR6 support
• DisplayPort 1.4a with Display Stream Compression (DSC) 1.2
• PureVideo Feature Set J hardware video decoding
• GPU Boost 4
• NVLink Bridge
• VirtualLink VR
• Improved NVENC codec
• Dedicated Integer (INT) cores for concurrent execution of integer and floating point operations[12]

Nvidia segregates the GPU dies for Turing into A and non-A variants, which is appended or excluded on the hundreds part of the GPU code name. Non-A variants are not allowed to be factory overclocked, whilst A variants are.[13]

The GeForce 20 series was launched with GDDR6 memory chips from Micron Technology. However, due to reported faults with launch models, Nvidia switched to using GDDR6 memory chips from Samsung Electronics by November 2018.[14]

With the GeForce 20 series, Nvidia introduced the RTX development platform. RTX uses Microsoft's DXR, Nvidia's OptiX, and Vulkan for access to ray tracing.[15] The ray tracing technology used in the RTX Turing GPUs was in development at Nvidia for 10 years.[16]

All of the cards in the series are PCIe 3.0 x16 cards, manufactured using a 12 nm FinFET process from TSMC, and use GDDR6 memory (initially Micron chips upon launch, and later Samsung chips from November 2018).[14]

• GeForce 10 series
• GeForce 16 series
• Nvidia Quadro
• Nvidia Tesla

• "Nvidia Turing GPU Architecture: Graphics Reinvented" (PDF). Nvidia. Nvidia Corporation.
• https://devblogs.nvidia.com/nvidia-turing-architecture-in-depth/

• Official website
• GeForce RTX Founders Edition Graphics Cards: Cool and Quiet, and Factory Overclocked
• Introducing GeForce RTX SUPER Graphics Cards: Best In Class Performance, Plus Ray Tracing
• Introducing The GeForce RTX 2060: Turing For Every Gamer
• Announcing New GeForce Laptops, Combining New Max-Q Tech with GeForce RTX SUPER GPUs, For Up To 2X More Efficiency Than Last-Gen
• GeForce RTX GPUs Come to 40+ Laptops, Global Availability January 29
• Nvidia Titan RTX
• GeForce RTX 2080 Ti
• GeForce RTX 2080 Super
• GeForce RTX 2080
• GeForce RTX 2070 Super
• GeForce RTX 2070
• GeForce RTX 2060 Super
• GeForce RTX 2060
• Nvidia Nsight