Mobility Radeon HD 3870 X2 vs Mobility Radeon HD 5870 Crossfire

Find out if it is worth upgrading your current GPU setup by comparing Mobility Radeon HD 3870 X2 and Mobility Radeon HD 5870 Crossfire. 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 Mobility Radeon HD 3870 X2 and Mobility Radeon HD 5870 Crossfire. 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.

Mobility Radeon HD 3870 X2 and Mobility Radeon HD 5870 Crossfire are Laptop Graphics Cards

Note: Mobility Radeon HD 3870 X2 and Mobility Radeon HD 5870 Crossfire 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 Mobility Radeon HD 3870 X2 or Mobility Radeon HD 5870 Crossfire here:

Main Specs

  Mobility Radeon HD 3870 X2 Mobility Radeon HD 5870 Crossfire
Power consumption (TDP) 110 Watt 120 Watt
Interface PCIe 2.0 x16
Memory type GDDR3 DDR3, GDDR3, GDDR5
Maximum RAM amount 512 MB 2x1 GB
Display Connectors No outputs
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  • Mobility Radeon HD 5870 Crossfire has 9% more power consumption, than Mobility Radeon HD 3870 X2.
  • Mobility Radeon HD 3870 X2 has 510 GB more memory, than Mobility Radeon HD 5870 Crossfire.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Mobility Radeon HD 5870 Crossfire - with Terascale 2.
  • Core clock speed of Mobility Radeon HD 5870 Crossfire is 40 MHz higher, than Mobility Radeon HD 3870 X2.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Mobility Radeon HD 5870 Crossfire - by 40 nm process technology.
  • Memory clock speed of Mobility Radeon HD 5870 Crossfire is 150 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 6−7 16−18
ultra / 1080p 4−5 9−10
QHD / 1440p 0−1 4−5
low / 720p 16−18 30−35
medium / 1080p 8−9 18−20
The average gaming FPS of Mobility Radeon HD 5870 Crossfire in Assassin's Creed Odyssey is 111% more, than Mobility Radeon HD 3870 X2.

Full Specs

  Mobility Radeon HD 3870 X2 Mobility Radeon HD 5870 Crossfire
Architecture RV6xx Terascale 2
Code name M88-XT CF Broadway-XT
Type Laptop Laptop
Release date 1 September 2008 7 January 2010
Pipelines 640 1600
Core clock speed 660 MHz 700 MHz
Transistor count 666 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 10.56
Floating-point performance 2x 422.4 gflops
Memory bus width 256 Bit 128 Bit
Memory clock speed 850 MHz 1000 MHz
Memory bandwidth 54.4 GB/s
Shared memory - -
DirectX 10.1 (10_1) DirectX 11, Shader 5.0
Shader Model 4.1
OpenGL 3.3
OpenCL N/A
Vulkan N/A
Laptop size large large
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