GeForce GTX 660 Ti vs Mobility Radeon HD 4870 X2

When choosing between GeForce GTX 660 Ti and Mobility Radeon HD 4870 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 660 Ti and Mobility Radeon HD 4870 X2.

Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

Note: Mobility Radeon HD 4870 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 4870 X2 here:

Main Specs

  GeForce GTX 660 Ti Mobility Radeon HD 4870 X2
Power consumption (TDP) 150 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors Two 6-pin
Memory type GDDR5 GDDR3, GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Mobility Radeon HD 4870 X2 uses PCIe 2.0 x16 interface.
  • GeForce GTX 660 Ti and Mobility Radeon HD 4870 X2 have maximum RAM of 2 GB.
  • GeForce GTX 660 Ti is used in Desktops, and Mobility Radeon HD 4870 X2 - in Laptops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Mobility Radeon HD 4870 X2 - with Terascale 1.
  • Core clock speed of GeForce GTX 660 Ti is 365 MHz higher, than Mobility Radeon HD 4870 X2.
  • GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Mobility Radeon HD 4870 X2 - by 55 nm process technology.
  • Memory clock speed of Mobility Radeon HD 4870 X2 is 882 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 9−10
ultra / 1080p 12−14 5−6
QHD / 1440p 8−9 0−1
4K / 2160p 5−6
low / 720p 40−45 21−24
medium / 1080p 27−30 12−14
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 116% more, than Mobility Radeon HD 4870 X2.

Full Specs

  GeForce GTX 660 Ti Mobility Radeon HD 4870 X2
Architecture Kepler Terascale 1
Code name GK104 M98-XT
Type Desktop Laptop
Release date 16 August 2012 9 January 2009
Pipelines 1344 1600
Core clock speed 915 MHz 550 MHz
Boost Clock 980 MHz
Transistor count 3,540 million 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 102.5 billion/sec 22.00
Floating-point performance 2,459.5 gflops 2x 880.0 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 888 MHz
Memory bandwidth 144.2 GB/s 89.6 GB/s
Shared memory - -
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.3 3.3
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA +
CUDA cores 1344
Bus support PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI +
HDCP +
Maximum VGA resolution 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 99 Mh/s
Laptop size large
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