GeForce GTX 860M SLI vs Radeon R9 390X

If you are going to buy a new graphics card and are choosing between GeForce GTX 860M SLI and Radeon R9 390X, 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 860M SLI stacks up against Radeon R9 390X, check out specs charts below.

GeForce GTX 860M SLI is a Laptop Graphics Card

Note: GeForce GTX 860M SLI 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 SLI here:

Main Specs

  GeForce GTX 860M SLI Radeon R9 390X
Power consumption (TDP) 120 Watt 275 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2x 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 390X has 129% more power consumption, than GeForce GTX 860M SLI.
  • GeForce GTX 860M SLI is used in Laptops, and Radeon R9 390X - in Desktops.
  • GeForce GTX 860M SLI is build with Maxwell architecture, and Radeon R9 390X - with GCN.
  • GeForce GTX 860M SLI and Radeon R9 390X are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 860M SLI is 3950 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 21−24 50−55
ultra / 1080p 14−16 30−35
QHD / 1440p 8−9 24−27
4K / 2160p 5−6 14−16
low / 720p 40−45 75−80
medium / 1080p 27−30 55−60
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 115% more, than GeForce GTX 860M SLI.

Full Specs

  GeForce GTX 860M SLI Radeon R9 390X
Architecture Maxwell GCN
Code name Grenada XT
Type Laptop Desktop
Release date 12 March 2014 16 June 2015
Pipelines 1280 2816
Core clock speed 1029 MHz
Boost Clock 1050 MHz
Transistor count 2x 1870 Million 6,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 184.8
Floating-point performance 5,914 gflops
Length 275 mm
Memory bus width 2x 128 Bit 512 Bit
Memory clock speed 5000 MHz 1050 MHz
Memory bandwidth 384 GB/s
Shared memory - -
DirectX DirectX 12 (FL 11_0), Shader 5.0
Shader Model 6.3
OpenGL 4.6
OpenCL 2.0
Vulkan +
CUDA +
FreeSync +
Bus support PCIe 3.0
SLI options +
HDMI +
Bitcoin / BTC (SHA256) 684 Mh/s
Laptop size large
Optimus +
Eyefinity +
PowerTune +
TrueAudio +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 27.5 Mh/s
High bandwidth memory (HBM) -
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