NVIDIA GeForce GTX 1660 Ti vs NVIDIA GeForce RTX 3090 Ti. Specifications, performance, tests

Comparison of basic technical data of graphics cards NVIDIA GeForce GTX 1660 Ti and NVIDIA GeForce RTX 3090 Ti, chip, information processing units.

• Architecture
  Turing Ampere
• CUDA Cores
  1536 10752
• Execution Units
  1536 -
• GPU Chip
  TU116 GA102-350-A1
• L1 Cache
  64 KB 128 KB
• L2 Cache
  1,536 MB 6 MB
• Render Output Units
  48 112
• Texture Units
  96 336
• Based on
  - GA102
• Shader
  - 10752

Video memory capacity, type, bus width and bandwidth describe different properties. These values alone do not determine graphics performance.

• Memory Bandwidth
  288 GB/s 1,008 GB/s
• Memory Bus
  192 bit 384 bit
• Memory Clock
  1500 MHz -
• Memory Data Rate
  12 Gbps -
• Memory Size
  6 GB 24 GB
• Memory Type
  GDDR6 GDDR6X
• Memory Speed (legacy frequency label)
  - 1300 MHz

Published GPU clock frequencies describe different operating modes. Clock speed alone does not determine graphics performance.

• Base Clock
  1500 MHz 1560 MHz
• Boost Clock
  1770 MHz 1860 MHz
• Overclocking
  - No

Graphics card power limits and recommended system power supply describe different specifications.

• Graphics Card Power
  120 W 450 W
• Maximum GPU Temperature
  95 °C 92 °C
• System Power Supply
  450 W (Minimum system power requirement) 850 W (System power requirement)
• TDP
  120 W 450 W

Connectivity and connections.

• DisplayPort Ports
  1 × DisplayPort 1.4a 3 × DisplayPort 1.4a
• DVI Ports
  1 × DVI -
• HDMI Ports
  1 × HDMI 2.1 1 × HDMI 2.1
• Max. Displays
  3 4
• Other Display Outputs (unparsed)
  DP 1.4a; HDMI 2.0b; DL-DVI-D HDMI
• PCIe Interface
  PCIe 3.0 x16 PCIe 4.0 x16
• Power Connectors
  8-pin 3x PCIe 8-pin cables (adapter in box) OR 450W or greater PCIe Gen 5 cable
• HDCP Version
  - 2.3

Technical data that is used to its full potential in computer games.

• CUDA
  7.5 -
• DirectX
  12.1 12_2
• Max. resolution
  3840 × 2160 7680 × 4320
• OpenCL
  3.0 3.0
• OpenGL
  4.6 4.6
• Shader Model
  6.7 (6.4) 6.6
• Vulkan
  1.3 1.3

The difference in size, weight and slot of the compared devices

• Height
  35 mm -
• Length
  229 mm -
• Slot Size
  Dual-slot -
• Width
  111 mm -

Comparison of interfaces and release dates for GPU NVIDIA GeForce RTX 3090 Ti and NVIDIA GeForce GTX 1660 Ti.

• Manufacturer specification scope
  NVIDIA Founders Edition/reference design. Clock specifications apply to gaming use. AIB shipping specifications and complete-system power needs may differ. NVIDIA Founders Edition/reference design. Clock specifications apply to gaming use. AIB shipping specifications and complete-system power needs may differ.
• Multi-monitor support
  Yes -
• Official source
  https://www.nvidia.com/en-us/geforce/graphics-cards/compare/ https://www.nvidia.com/en-us/geforce/graphics-cards/compare/
• Process Technology
  12 nm 8 nm
• Release date
  Q1/2019 -
• Verification scope
  Explicit manufacturer fields refreshed; other original historical fields retained, not all reverified. Partial composite conflicts are preserved. Explicit manufacturer fields refreshed; other original historical fields retained, not all reverified. Partial composite conflicts are preserved.
• Verified on
  2026-09-30 2026-09-30

• FP16 (theoretical)
  10.87 TFLOPS (2:1) 40 TFLOPS
• FP32 (theoretical)
  5.437 TFLOPS 40 TFLOPS
• FP64 (theoretical)
  169.9 GFLOPS (1:32) 0.625 TFLOPS
• Pixel Rate
  84.96 GPixel/s 208.3 GPixel/s
• Texture Rate
  169.9 GTexel/s 625.0 GTexel/s