GeForce 940M vs Radeon HD 6990

Find out if it is worth upgrading your current GPU setup by comparing GeForce 940M 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 940M 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 940M is a Laptop Graphics Card

Note: GeForce 940M 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 940M here:

Main Specs

  GeForce 940M Radeon HD 6990
Power consumption (TDP) 75 Watt 375 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors 2x 8-pin
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 6990 has 400% more power consumption, than GeForce 940M.
  • GeForce 940M is connected by PCIe 3.0 x8, and Radeon HD 6990 uses PCIe 2.0 x16 interface.
  • GeForce 940M has 2 GB more memory, than Radeon HD 6990.
  • GeForce 940M is used in Laptops, and Radeon HD 6990 - in Desktops.
  • GeForce 940M is build with Maxwell architecture, and Radeon HD 6990 - with TeraScale 3.
  • Core clock speed of GeForce 940M is 242 MHz higher, than Radeon HD 6990.
  • GeForce 940M is manufactured by 28 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 6990 is 3000 MHz higher, than GeForce 940M.

Game benchmarks

high / 1080p 2−3 14−16
ultra / 1080p 1−2 9−10
QHD / 1440p 0−1 3−4
low / 720p 12−14 30−35
medium / 1080p 4−5 18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 280% more, than GeForce 940M.

Full Specs

  GeForce 940M Radeon HD 6990
Architecture Maxwell TeraScale 3
Code name N16S-GT-S/B Antilles
Type Laptop Desktop
Release date 12 March 2015 8 March 2011
Pipelines 384 1536
Core clock speed 1072 MHz 830 MHz
Boost Clock 1176 MHz
Transistor count 1,870 million 2,640 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 28.22 79.68
Floating-point performance 903.2 gflops 2x 2,549.8 gflops
Length 295 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 5000 MHz
Memory bandwidth 14.4 GB/s 160.0 GB/s
Shared memory -
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126 N/A
CUDA +
Bus support PCI Express 3.0
Bitcoin / BTC (SHA256) 101 Mh/s 265 Mh/s
Laptop size medium sized
Optimus +
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
GPU Boost 2.0
GameWorks +
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