Mobility Radeon HD 3870 X2 vs Radeon HD 5750

If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 3870 X2 and Radeon HD 5750, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Mobility Radeon HD 3870 X2 stacks up against Radeon HD 5750, check out specs charts below.

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 5750
Power consumption (TDP) 110 Watt 86 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, 1x DisplayPort
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  • Mobility Radeon HD 3870 X2 has 27% more power consumption, than Radeon HD 5750.
  • 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 5750.
  • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon HD 5750 - in Desktops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 5750 - with TeraScale 2.
  • Core clock speed of Radeon HD 5750 is 40 MHz higher, than Mobility Radeon HD 3870 X2.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon HD 5750 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 5750 is 3750 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 6−7 3−4
ultra / 1080p 4−5 2−3
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 5750.

Full Specs

  Mobility Radeon HD 3870 X2 Radeon HD 5750
Architecture RV6xx TeraScale 2
Code name M88-XT CF Juniper
Type Laptop Desktop
Release date 1 September 2008 13 October 2009
Pipelines 640 720
Core clock speed 660 MHz 700 MHz
Transistor count 666 million 1,040 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 10.56 25.20
Floating-point performance 2x 422.4 gflops 1,008.0 gflops
Length 178 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 850 MHz 4600 MHz
Memory bandwidth 54.4 GB/s 73.6 GB/s
Shared memory -
DirectX 10.1 (10_1) 11.2 (11_0)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL N/A 1.2
Vulkan N/A N/A
Laptop size large
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