Mobility Radeon HD 3870 X2 vs Radeon HD 6770

When choosing between Mobility Radeon HD 3870 X2 and Radeon HD 6770, 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 Mobility Radeon HD 3870 X2 and Radeon HD 6770.

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

  Mobility Radeon HD 3870 X2 Radeon HD 6770
Power consumption (TDP) 110 Watt 108 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR3 GDDR5
Maximum RAM amount 512 MB 1 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Mobility Radeon HD 3870 X2 has 1% more power consumption, than Radeon HD 6770.
  • 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 Radeon HD 6770.
  • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon HD 6770 - in Desktops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 6770 - with TeraScale 2.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon HD 6770 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 6770 is 200 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 6−7 3−4
ultra / 1080p 4−5 1−2
QHD / 1440p 0−1 0−1
low / 720p 16−18 14−16
medium / 1080p 8−9 5−6
The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 50% more, than Radeon HD 6770.

Full Specs

  Mobility Radeon HD 3870 X2 Radeon HD 6770
Architecture RV6xx TeraScale 2
Code name M88-XT CF Juniper
Type Laptop Desktop
Release date 1 September 2008 21 January 2011
Pipelines 640 800
Core clock speed 660 MHz
Boost Clock 900 MHz
Transistor count 666 million 1,040 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 10.56 34.00
Floating-point performance 2x 422.4 gflops 1,360.0 gflops
Length 198 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 850 MHz 1050 MHz
Memory bandwidth 54.4 GB/s 76.8 GB/s
Shared memory -
DirectX 10.1 (10_1)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL N/A 1.2
Vulkan N/A
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 118 Mh/s
Laptop size large
Eyefinity +
Design reference
CrossFire +
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