GeForce GTX 1660 Ti mobile vs Radeon HD 6990

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 1660 Ti mobile and Radeon HD 6990. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 1660 Ti mobile and Radeon HD 6990. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GTX 1660 Ti mobile is a Laptop Graphics Card

Note: GeForce GTX 1660 Ti mobile is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GTX 1660 Ti mobile here:

Main Specs

  GeForce GTX 1660 Ti mobile Radeon HD 6990
Power consumption (TDP) 375 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR6 GDDR5
Maximum RAM amount 6 GB 2 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • GeForce GTX 1660 Ti mobile is connected by PCIe 3.0 x16, and Radeon HD 6990 uses PCIe 2.0 x16 interface.
  • GeForce GTX 1660 Ti mobile has 4 GB more memory, than Radeon HD 6990.
  • GeForce GTX 1660 Ti mobile is used in Laptops, and Radeon HD 6990 - in Desktops.
  • GeForce GTX 1660 Ti mobile is build with Turing architecture, and Radeon HD 6990 - with TeraScale 3.
  • Core clock speed of GeForce GTX 1660 Ti mobile is 625 MHz higher, than Radeon HD 6990.
  • GeForce GTX 1660 Ti mobile is manufactured by 12 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
  • Memory clock speed of GeForce GTX 1660 Ti mobile is 7000 MHz higher, than Radeon HD 6990.

Game benchmarks

high / 1080p 50−55 14−16
ultra / 1080p 35−40 9−10
QHD / 1440p 27−30 3−4
4K / 2160p 16−18
low / 720p 80−85 30−35
medium / 1080p 60−65 18−20
The average gaming FPS of GeForce GTX 1660 Ti mobile in Assassin's Creed Odyssey is 246% more, than Radeon HD 6990.

Full Specs

  GeForce GTX 1660 Ti mobile Radeon HD 6990
Architecture Turing TeraScale 3
Code name N18E-G0 Antilles
Type Laptop Desktop
Release date 23 April 2019 8 March 2011
Pipelines 1536 1536
Core clock speed 1455 MHz 830 MHz
Boost Clock 1590 MHz
Transistor count 6,600 million 2,640 million
Manufacturing process technology 12 nm 40 nm
Texture fill rate 152.6 79.68
Floating-point performance 2x 2,549.8 gflops
Length 295 mm
Memory bus width 192 Bit 256 Bit
Memory clock speed 12000 MHz 5000 MHz
Memory bandwidth 288.0 GB/s 160.0 GB/s
Shared memory -
DirectX 12 (12_1) 11.2 (11_0)
Shader Model 6.5 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan 1.2.131 N/A
CUDA 7.5
Bitcoin / BTC (SHA256) 265 Mh/s
Laptop size medium sized
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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