GRID K2 vs Mobility Radeon HD 3870 X2

In this comparison between GRID K2 and Mobility Radeon HD 3870 X2 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GRID K2 will be the best choice, for others Mobility Radeon HD 3870 X2 will be their preference. Study the comparison tables below and make your choice.

Mobility Radeon HD 3870 X2 is a Laptop Graphics Card

Note: Mobility Radeon HD 3870 X2 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 Mobility Radeon HD 3870 X2 here:

Main Specs

  GRID K2 Mobility Radeon HD 3870 X2
Power consumption (TDP) 225 Watt 110 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 8-pin
Memory type GDDR5 GDDR3
Maximum RAM amount 4 GB 512 MB
Display Connectors No outputs No outputs
  Check Price Check Price
  • GRID K2 has 104% more power consumption, than Mobility Radeon HD 3870 X2.
  • GRID K2 is connected by PCIe 3.0 x16, and Mobility Radeon HD 3870 X2 uses PCIe 2.0 x16 interface.
  • Mobility Radeon HD 3870 X2 has 508 GB more memory, than GRID K2.
  • GRID K2 is used in Desktops, and Mobility Radeon HD 3870 X2 - in Laptops.
  • GRID K2 is build with Kepler architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of GRID K2 is 85 MHz higher, than Mobility Radeon HD 3870 X2.
  • GRID K2 is manufactured by 28 nm process technology, and Mobility Radeon HD 3870 X2 - by 55 nm process technology.
  • Memory clock speed of GRID K2 is 4150 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 16−18 6−7
ultra / 1080p 9−10 4−5
QHD / 1440p 4−5 0−1
4K / 2160p 4−5
low / 720p 30−35 16−18
medium / 1080p 20−22 8−9
The average gaming FPS of GRID K2 in Assassin's Creed Odyssey is 122% more, than Mobility Radeon HD 3870 X2.

Full Specs

  GRID K2 Mobility Radeon HD 3870 X2
Architecture Kepler RV6xx
Code name GK104 M88-XT CF
Type Workstation Laptop
Release date 11 May 2013 1 September 2008
Pipelines 1536 640
Core clock speed 745 MHz 660 MHz
Transistor count 3,540 million 666 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 95.36 10.56
Floating-point performance 2x 2,289 gflops 2x 422.4 gflops
Length 267 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 5000 MHz 850 MHz
Memory bandwidth 160.0 GB/s 54.4 GB/s
Shared memory -
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.6 3.3
OpenCL 1.2 N/A
Vulkan 1.1.126 N/A
CUDA 3.0
Bitcoin / BTC (SHA256) 114 Mh/s
Laptop size large
  Check Price Check Price