GeForce GTX 860M vs Radeon HD 7990

When choosing between GeForce GTX 860M and Radeon HD 7990, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 860M and Radeon HD 7990.

GeForce GTX 860M is a Laptop Graphics Card

Note: GeForce GTX 860M 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 860M here:

Main Specs

  GeForce GTX 860M Radeon HD 7990
Power consumption (TDP) 75 Watt 375 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors None 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 4 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 860M.
  • GeForce GTX 860M is connected by MXM-B (3.0), and Radeon HD 7990 uses PCIe 3.0 x16 interface.
  • GeForce GTX 860M has 1 GB more memory, than Radeon HD 7990.
  • GeForce GTX 860M is used in Laptops, and Radeon HD 7990 - in Desktops.
  • GeForce GTX 860M is build with Maxwell architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of Radeon HD 7990 is 153 MHz higher, than GeForce GTX 860M.
  • GeForce GTX 860M and Radeon HD 7990 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 16−18 35−40
ultra / 1080p 10−11 21−24
QHD / 1440p 5−6 16−18
4K / 2160p 4−5 10−11
low / 720p 30−35 60−65
medium / 1080p 21−24 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 113% more, than GeForce GTX 860M.

Full Specs

  GeForce GTX 860M Radeon HD 7990
Architecture Maxwell GCN 1.0
Code name N15P-GX Malta
Type Laptop Desktop
Release date 12 March 2014 24 April 2013
Pipelines 640 2048
Core clock speed 797 MHz 950 MHz
Boost Clock 915 MHz 1000 MHz
Transistor count 1,870 million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 43.40 128.0
Floating-point performance 1,389 gflops 2x 4,096 gflops
Length 307 mm
Memory bus width 128 Bit 384 Bit
Memory clock speed 6000 MHz
Memory bandwidth 80.0 GB/s 288.0 GB/s
Shared memory -
DirectX 12 (11_0) 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 1152 or 640
Bus support PCI Express 2.0, PCI Express 3.0
SLI options +
HDMI +
Bitcoin / BTC (SHA256) 163 Mh/s 459 Mh/s
Laptop size medium sized
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus +
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
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