GeForce GTX 880M vs Radeon R9 390X

When choosing between GeForce GTX 880M and Radeon R9 390X, 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 880M and Radeon R9 390X.

GeForce GTX 880M is a Laptop Graphics Card

Note: GeForce GTX 880M 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 880M here:

Main Specs

  GeForce GTX 880M Radeon R9 390X
Power consumption (TDP) 122 Watt 275 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors None 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 8 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 390X has 125% more power consumption, than GeForce GTX 880M.
  • GeForce GTX 880M is connected by MXM-B (3.0), and Radeon R9 390X uses PCIe 3.0 x16 interface.
  • GeForce GTX 880M is used in Laptops, and Radeon R9 390X - in Desktops.
  • GeForce GTX 880M is build with Kepler architecture, and Radeon R9 390X - with GCN.
  • GeForce GTX 880M and Radeon R9 390X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 20−22 50−55
ultra / 1080p 12−14 30−35
QHD / 1440p 6−7 24−27
4K / 2160p 5−6 14−16
low / 720p 40−45 75−80
medium / 1080p 24−27 55−60
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 126% more, than GeForce GTX 880M.

Full Specs

  GeForce GTX 880M Radeon R9 390X
Architecture Kepler GCN
Code name N15E-GX-A2 Grenada XT
Type Laptop Desktop
Release date 12 March 2014 16 June 2015
Pipelines 1536 2816
Core clock speed 954 MHz
Boost Clock 993 MHz 1050 MHz
Transistor count 3,540 million 6,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 127.1 184.8
Floating-point performance 3,050 gflops 5,914 gflops
Length 275 mm
Memory bus width 256 Bit 512 Bit
Memory clock speed 1050 MHz
Memory bandwidth 160.0 GB/s 384 GB/s
Shared memory - -
DirectX 12 (11_0)
Shader Model 5.1 6.3
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126 +
CUDA +
FreeSync +
CUDA cores 1536
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
SLI options +
HDMI + +
Bitcoin / BTC (SHA256) 96 Mh/s 684 Mh/s
Laptop size large
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 +
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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