Maxwell GPU Surface Book 940M GDDR5 vs Radeon R9 M280X

Find out if it is worth upgrading your current GPU setup by comparing Maxwell GPU Surface Book 940M GDDR5 and Radeon R9 M280X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Maxwell GPU Surface Book 940M GDDR5 and Radeon R9 M280X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Maxwell GPU Surface Book 940M GDDR5 and Radeon R9 M280X are Laptop Graphics Cards

Note: Maxwell GPU Surface Book 940M GDDR5 and Radeon R9 M280X 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 Maxwell GPU Surface Book 940M GDDR5 or Radeon R9 M280X here:

Main Specs

  Maxwell GPU Surface Book 940M GDDR5 Radeon R9 M280X
Interface PCIe 3.0 x16
Memory type GDDR5 Not Listed
Maximum RAM amount 1 GB
Display Connectors No outputs
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  • Both cards are used in Laptops.
  • Maxwell GPU Surface Book 940M GDDR5 is build with Maxwell architecture, and Radeon R9 M280X - with GCN.
  • Core clock speed of Maxwell GPU Surface Book 940M GDDR5 is 54 MHz higher, than Radeon R9 M280X.
  • Maxwell GPU Surface Book 940M GDDR5 and Radeon R9 M280X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 9−10 2−3
ultra / 1080p 5−6 1−2
QHD / 1440p 0−1 0−1
low / 720p 21−24 14−16
medium / 1080p 12−14 4−5
The average gaming FPS of Maxwell GPU Surface Book 940M GDDR5 in Assassin's Creed Odyssey is 140% more, than Radeon R9 M280X.

Full Specs

  Maxwell GPU Surface Book 940M GDDR5 Radeon R9 M280X
Architecture Maxwell GCN
Code name Surface Book Saturn XT
Type Laptop Laptop
Release date 1 October 2015 1 February 2015
Pipelines 384 896
Core clock speed 954 MHz 900 MHz
Boost Clock 993 MHz
Transistor count 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 61.60
Floating-point performance 1,792 gflops
Memory bus width 64 Bit
Memory clock speed 5012 MHz
Memory bandwidth 96 GB/s
Shared memory - -
DirectX DirectX 12 (FL 11_0), Shader 5.0
Shader Model 6.3
OpenGL 4.4
OpenCL Not Listed
CUDA +
FreeSync +
Bus support Not Listed
Laptop size large
Optimus +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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