GeForce GTX 275 vs Mobility Radeon HD 3870 X2

When choosing between GeForce GTX 275 and Mobility Radeon HD 3870 X2, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 275 and Mobility Radeon HD 3870 X2.

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 275 Mobility Radeon HD 3870 X2
Power consumption (TDP) 219 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 896 MB 512 MB
Display Connectors 2x DVI No outputs
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  • GeForce GTX 275 has 99% more power consumption, than Mobility Radeon HD 3870 X2.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • GeForce GTX 275 has 384 GB more memory, than Mobility Radeon HD 3870 X2.
  • GeForce GTX 275 is used in Desktops, and Mobility Radeon HD 3870 X2 - in Laptops.
  • GeForce GTX 275 is build with Tesla 2.0 architecture, and Mobility Radeon HD 3870 X2 - with RV6xx.
  • Core clock speed of GeForce GTX 275 is 744 MHz higher, than Mobility Radeon HD 3870 X2.
  • GeForce GTX 275 and Mobility Radeon HD 3870 X2 are manufactured by 55 nm process technology.
  • Memory clock speed of GeForce GTX 275 is 284 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 6−7 6−7
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 16−18
medium / 1080p 8−9 8−9
GeForce GTX 275 and Mobility Radeon HD 3870 X2 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 275 Mobility Radeon HD 3870 X2
Architecture Tesla 2.0 RV6xx
Code name GT200B M88-XT CF
Type Desktop Laptop
Release date 15 January 2009 1 September 2008
Pipelines 240 640
Core clock speed 1404 MHz 660 MHz
Transistor count 1,400 million 666 million
Manufacturing process technology 55 nm 55 nm
Texture fill rate 50.6 billion/sec 10.56
Floating-point performance 673.9 gflops 2x 422.4 gflops
Length 10.5" (267 mm) (26.7 cm)
Memory bus width 448 Bit 256 Bit
Memory clock speed 1134 MHz 850 MHz
Memory bandwidth 127.0 GB/s 54.4 GB/s
Shared memory -
DirectX 11.1 (10_0) 10.1 (10_1)
Shader Model 4.0 4.1
OpenGL 3.0 3.3
OpenCL 1.1 N/A
Vulkan N/A N/A
CUDA +
CUDA cores 240
Bus support PCI-E 2.0
Height 4.376" (111 mm) (11.1 cm)
SLI options +
Multi monitor support +
Maximum VGA resolution 2048x1536
Audio input for HDMI S/PDIF
Laptop size large
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