GeForce GTX 285 vs Mobility Radeon HD 3870 X2

In this comparison between GeForce GTX 285 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 GeForce GTX 285 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

  GeForce GTX 285 Mobility Radeon HD 3870 X2
Power consumption (TDP) 204 Watt 110 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type GDDR3 GDDR3
Maximum RAM amount 1 GB 512 MB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • GeForce GTX 285 has 85% more power consumption, than Mobility Radeon HD 3870 X2.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Mobility Radeon HD 3870 X2 has 511 GB more memory, than GeForce GTX 285.
  • GeForce GTX 285 is used in Desktops, and Mobility Radeon HD 3870 X2 - in Laptops.
  • GeForce GTX 285 is build with Tesla 2.0 architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of GeForce GTX 285 is 816 MHz higher, than Mobility Radeon HD 3870 X2.
  • GeForce GTX 285 and Mobility Radeon HD 3870 X2 are manufactured by 55 nm process technology.
  • Memory clock speed of GeForce GTX 285 is 392 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 7−8 6−7
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 16−18
medium / 1080p 9−10 8−9
GeForce GTX 285 and Mobility Radeon HD 3870 X2 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 285 Mobility Radeon HD 3870 X2
Architecture Tesla 2.0 RV6xx
Code name GT200B M88-XT CF
Type Desktop Laptop
Release date 23 December 2008 1 September 2008
Pipelines 240 640
Core clock speed 1476 MHz 660 MHz
Transistor count 1,400 million 666 million
Manufacturing process technology 55 nm 55 nm
Texture fill rate 51.8 billion/sec 10.56
Floating-point performance 708.5 gflops 2x 422.4 gflops
Length 10.5" (267 mm) (26.7 cm)
Memory bus width 512 Bit 256 Bit
Memory clock speed 1242 MHz 850 MHz
Memory bandwidth 159.0 GB/s 54.4 GB/s
Shared memory -
DirectX 11.1 (10_0) 10.1 (10_1)
Shader Model 4.0 4.1
OpenGL 2.1 3.3
OpenCL 1.1 N/A
Vulkan N/A N/A
CUDA +
CUDA cores 240
Height 4.376" (111 mm) (11.1 cm)
SLI options +
Multi monitor support +
HDMI +
Maximum VGA resolution 2048x1536
Audio input for HDMI S/PDIF
Laptop size large
High Dynamic-Range Lighting (HDRR) 128bit
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