Mobility Radeon HD 4870 X2 vs Radeon HD 8770M

Find out if it is worth upgrading your current GPU setup by comparing Mobility Radeon HD 4870 X2 and Radeon HD 8770M. 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 4870 X2 and Radeon HD 8770M. 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 4870 X2 and Radeon HD 8770M are Laptop Graphics Cards

Note: Mobility Radeon HD 4870 X2 and Radeon HD 8770M 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 4870 X2 or Radeon HD 8770M here:

Main Specs

  Mobility Radeon HD 4870 X2 Radeon HD 8770M
Interface PCIe 2.0 x16 PCIe 3.0 x8
Memory type GDDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon HD 8770M uses PCIe 3.0 x8 interface.
  • Mobility Radeon HD 4870 X2 and Radeon HD 8770M have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 8770M - with GCN.
  • Core clock speed of Radeon HD 8770M is 225 MHz higher, than Mobility Radeon HD 4870 X2.
  • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon HD 8770M - by 28 nm process technology.
  • Memory clock speed of Radeon HD 8770M is 3612 MHz higher, than Mobility Radeon HD 4870 X2.

Game benchmarks

high / 1080p 9−10 7−8
ultra / 1080p 5−6 4−5
QHD / 1440p 0−1 0−1
low / 720p 21−24 16−18
medium / 1080p 12−14 8−9
The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 33% more, than Radeon HD 8770M.

Full Specs

  Mobility Radeon HD 4870 X2 Radeon HD 8770M
Architecture Terascale 1 GCN
Code name M98-XT Mars
Type Laptop Laptop
Release date 9 January 2009 16 November 2012
Pipelines 1600 384
Core clock speed 550 MHz 775 MHz
Boost Clock 825 MHz
Transistor count 956 million 950 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 22.00 19.80
Floating-point performance 2x 880.0 gflops 633.6 gflops
Memory bus width 256 Bit 128 Bit
Memory clock speed 888 MHz 4500 MHz
Memory bandwidth 89.6 GB/s 72 GB/s
Shared memory - -
DirectX 10.1 (10_1) 12 (11_1)
Shader Model 4.1 5.1
OpenGL 3.3 4.6
OpenCL 1.1 1.2
Vulkan N/A 1.2.131
Laptop size large medium sized
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