Maxwell GPU Surface Book vs Radeon R9 M385X

Find out if it is worth upgrading your current GPU setup by comparing Maxwell GPU Surface Book and Radeon R9 M385X. 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 and Radeon R9 M385X. 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 and Radeon R9 M385X are Laptop Graphics Cards

Note: Maxwell GPU Surface Book and Radeon R9 M385X 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 or Radeon R9 M385X here:

Main Specs

  Maxwell GPU Surface Book Radeon R9 M385X
Interface PCIe 3.0 x16
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 4 GB
Display Connectors No outputs
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  • Radeon R9 M385X has 3 GB more memory, than Maxwell GPU Surface Book.
  • Both cards are used in Laptops.
  • Maxwell GPU Surface Book is build with Maxwell architecture, and Radeon R9 M385X - with GCN.
  • Core clock speed of Radeon R9 M385X is 146 MHz higher, than Maxwell GPU Surface Book.
  • Maxwell GPU Surface Book and Radeon R9 M385X are manufactured by 28 nm process technology.
  • Memory clock speed of Maxwell GPU Surface Book is 3512 MHz higher, than Radeon R9 M385X.

Game benchmarks

high / 1080p 8−9 8−9
ultra / 1080p 5−6 5−6
QHD / 1440p 0−1 0−1
low / 720p 20−22 18−20
medium / 1080p 10−12 10−11
The average gaming FPS of Maxwell GPU Surface Book in Assassin's Creed Odyssey is 10% more, than Radeon R9 M385X.

Full Specs

  Maxwell GPU Surface Book Radeon R9 M385X
Architecture Maxwell GCN
Code name Surface Book Strato-XT-M3
Type Laptop Laptop
Release date 1 October 2015 16 June 2015
Pipelines 384 896
Core clock speed 954 MHz 1100 MHz
Boost Clock 993 MHz 1100 MHz
Transistor count 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 61.60
Floating-point performance 1,971 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 5012 MHz 1500 MHz
Memory bandwidth 76.8 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 PCIe 3.0
Laptop size large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
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