GeForce GTX 680M vs Radeon R9 M390

If you are going to buy a new graphics card and are choosing between GeForce GTX 680M and Radeon R9 M390, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GTX 680M stacks up against Radeon R9 M390, check out specs charts below.

GeForce GTX 680M and Radeon R9 M390 are Laptop Graphics Cards

Note: GeForce GTX 680M and Radeon R9 M390 are only used in laptop graphics. They have 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 680M or Radeon R9 M390 here:

Main Specs

  GeForce GTX 680M Radeon R9 M390
Power consumption (TDP) 100 Watt
Interface MXM-B (3.0)
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB 2 GB
Display Connectors No outputs
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  • GeForce GTX 680M has 2 GB more memory, than Radeon R9 M390.
  • Both cards are used in Laptops.
  • GeForce GTX 680M is build with Kepler architecture, and Radeon R9 M390 - with GCN.
  • GeForce GTX 680M and Radeon R9 M390 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 16−18 18−20
ultra / 1080p 9−10 10−11
QHD / 1440p 4−5 5−6
4K / 2160p 4−5 4−5
low / 720p 30−35 35−40
medium / 1080p 20−22 21−24
The average gaming FPS of Radeon R9 M390 in Assassin's Creed Odyssey is 14% more, than GeForce GTX 680M.

Full Specs

  GeForce GTX 680M Radeon R9 M390
Architecture Kepler GCN
Code name N13E-GTX Pitcairn
Type Laptop Laptop
Release date 4 June 2012 9 June 2015
Pipelines 1344 1024
Core clock speed 720 MHz
Boost Clock 758 MHz
Transistor count 3,540 million 5000 Million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 80.6 billion/sec
Floating-point performance 2,038 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 1800 MHz
Memory bandwidth 115.2 GB/s
Shared memory - -
DirectX 12 API
Shader Model 5.1
OpenGL 4.5 4.4
OpenCL 1.1 Not Listed
Vulkan 1.1.126
CUDA +
FreeSync +
CUDA cores 1344
Bus support PCI Express 3.0 PCIe 3.0
SLI options +
Bitcoin / BTC (SHA256) 100 Mh/s 242 Mh/s
Laptop size large large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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