GeForce RTX 2080 Ti

The GeForce RTX 2080 Ti is based on the TU102 GPU. The TU102 modification used in this model is exactly twice the number of blocks than the TU106, which appeared in the form of the GeForce RTX 2070 model. The TU102 used in the new product has an area of ​​754 mm² and 18,6 billion transistors versus 610 mm² and 15,3 billion transistors the top chip of the Pascal family has the GP100.

The complete TU102 chip includes six Graphics Processing Clusters (GPCs), 36 Texture Processing Clusters (TPCs), and 72 Streaming Multiprocessors (SMs). Each of the GPC clusters has its own rasterization engine and six TPC clusters, each of which, in turn, includes two SM multiprocessors. All SMs contain 64 CUDA cores, 8 tensor cores, 4 texture units, a 256 KB register file and 96 KB of configurable L1 cache and shared memory. For the needs of hardware ray tracing, each SM multiprocessor also has one RT core.

In total, this version of TU102 has 4352 CUDA cores, 72 RT cores, 544 tensor cores and 272 TMU units. The GPU communicates with the memory using 12 separate 32-bit controllers, resulting in a 384-bit bus overall. Each memory controller has eight ROP blocks and 512 KB of L96 cache. That is, the chip has 6 ROP blocks and 2 MB of LXNUMX cache.

In terms of the structure of SM multiprocessors, the new Turing architecture is very similar to Volta, and the number of CUDA cores, TMUs and ROPs has not increased too much compared to Pascal - and this despite such a complication and physical increase in the chip! But this is not surprising, because the main complexity was introduced by new types of computational units: tensor cores and ray tracing acceleration cores.

The CUDA cores themselves were also made more complex, in which it became possible to simultaneously perform integer calculations and floating-point operations, and the cache memory size was seriously increased. Nvidia worked with manufacturers to provide support for a new type of memory - GDDR6, and all the new GeForce RTX family supports this type of chips, which have a bandwidth of 14 Gbps and are 20% more energy efficient compared to the top-end Pascal GDDR5X- memory.

GDDR6 features provide high memory bandwidth, which is significantly higher than the previous generation of GPUs that support GDDR5 and GDDR5X memory types. The GeForce RTX 2080 Ti being reviewed today has a memory bandwidth of 616 GB/s, which is higher than both its predecessors and than competing video cards that use expensive HBM2 memory.

Characteristics of GeForce GeForce RTX 2080 Ti

This video card has 11 gigabytes of 352-bit GDDR6 memory, and the frequency of the graphics chip ranges from 1350 to 1545 MHz.