GeForce GTX 670MX vs Radeon HD 7990

In this comparison between GeForce GTX 670MX and Radeon HD 7990 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GTX 670MX will be the best choice, for others Radeon HD 7990 will be their preference. Study the comparison tables below and make your choice.

GeForce GTX 670MX is a Laptop Graphics Card

Note: GeForce GTX 670MX 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 670MX here:

Main Specs

  GeForce GTX 670MX Radeon HD 7990
Power consumption (TDP) 75 Watt 375 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 3 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 7990 has 400% more power consumption, than GeForce GTX 670MX.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GeForce GTX 670MX and Radeon HD 7990 have maximum RAM of 3 GB.
  • GeForce GTX 670MX is used in Laptops, and Radeon HD 7990 - in Desktops.
  • GeForce GTX 670MX is build with Kepler architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of Radeon HD 7990 is 350 MHz higher, than GeForce GTX 670MX.
  • GeForce GTX 670MX and Radeon HD 7990 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7990 is 4600 MHz higher, than GeForce GTX 670MX.

Game benchmarks

high / 1080p 8−9 35−40
ultra / 1080p 5−6 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 20−22 60−65
medium / 1080p 10−12 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 272% more, than GeForce GTX 670MX.

Full Specs

  GeForce GTX 670MX Radeon HD 7990
Architecture Kepler GCN 1.0
Code name N13E-GR Malta
Type Laptop Desktop
Release date 1 October 2012 24 April 2013
Pipelines 960 2048
Core clock speed 600 MHz 950 MHz
Boost Clock 1000 MHz
Transistor count 3,540 million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 48.0 billion/sec 128.0
Floating-point performance 1,154 gflops 2x 4,096 gflops
Length 307 mm
Memory bus width 192 Bit 384 Bit
Memory clock speed 1400 MHz 6000 MHz
Memory bandwidth 67.2 GB/s 288.0 GB/s
Shared memory -
DirectX 12 API 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.2.131
CUDA +
CUDA cores 960
Bus support PCI Express 2.0
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 459 Mh/s
Laptop size large
Optimus +
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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