GeForce GTX 660 Ti vs Radeon HD 6870

When choosing between GeForce GTX 660 Ti and Radeon HD 6870, 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 Radeon HD 6870.

Main Specs

  GeForce GTX 660 Ti Radeon HD 6870
Power consumption (TDP) 150 Watt 151 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors Two 6-pin 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6870 has 0% more power consumption, than GeForce GTX 660 Ti.
  • GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon HD 6870 uses PCIe 2.0 x16 interface.
  • GeForce GTX 660 Ti has 1 GB more memory, than Radeon HD 6870.
  • Both cards are used in Desktops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 6870 - with Terascale 2.
  • GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon HD 6870 - by 40 nm process technology.
  • Radeon HD 6870 is 211 mm longer, than GeForce GTX 660 Ti.
  • Memory clock speed of Radeon HD 6870 is 1044 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 10−12
ultra / 1080p 12−14 6−7
QHD / 1440p 8−9 1−2
4K / 2160p 5−6
low / 720p 40−45 24−27
medium / 1080p 27−30 12−14
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 109% more, than Radeon HD 6870.

Full Specs

  GeForce GTX 660 Ti Radeon HD 6870
Architecture Kepler Terascale 2
Code name GK104 RV940 Barts
Type Desktop Desktop
Release date 16 August 2012 22 October 2010
Pipelines 1344 1120
Core clock speed 915 MHz
Boost Clock 980 MHz 900 MHz
Transistor count 3,540 million 1,700 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 102.5 billion/sec 50.40
Floating-point performance 2,459.5 gflops 2,016.0 gflops
Length 9.5" (24.1 cm) 220 mm
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 1050 MHz
Memory bandwidth 144.2 GB/s 134.4 GB/s
Shared memory - -
DirectX 12 (11_0)
Shader Model 5.1 5.0
OpenGL 4.3 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126
CUDA +
CUDA cores 1344
Bus support PCI Express 3.0 PCIe 2.0 x16
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 213 Mh/s
Eyefinity +
Design reference
CrossFire +
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