GeForce GTX 660 Ti vs Radeon HD 5850

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 Ti and Radeon HD 5850, 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 GeForce GTX 660 Ti stacks up against Radeon HD 5850, check out specs charts below.

Main Specs

  GeForce GTX 660 Ti Radeon HD 5850
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, 1x DisplayPort
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  • Radeon HD 5850 has 0% more power consumption, than GeForce GTX 660 Ti.
  • GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon HD 5850 uses PCIe 2.0 x16 interface.
  • GeForce GTX 660 Ti has 1 GB more memory, than Radeon HD 5850.
  • Both cards are used in Desktops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 5850 - with Terascale 2.
  • Core clock speed of GeForce GTX 660 Ti is 190 MHz higher, than Radeon HD 5850.
  • GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon HD 5850 - by 40 nm process technology.
  • Radeon HD 5850 is 232 mm longer, than GeForce GTX 660 Ti.
  • Memory clock speed of Radeon HD 5850 is 1994 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 Radeon HD 5850.

Full Specs

  GeForce GTX 660 Ti Radeon HD 5850
Architecture Kepler Terascale 2
Code name GK104 Cypress
Type Desktop Desktop
Release date 16 August 2012 30 September 2009
Pipelines 1344 1440
Core clock speed 915 MHz 725 MHz
Boost Clock 980 MHz
Transistor count 3,540 million 2,154 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 102.5 billion/sec 52.20
Floating-point performance 2,459.5 gflops 2,088.0 gflops
Length 9.5" (24.1 cm) 241 mm
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 2000 MHz
Memory bandwidth 144.2 GB/s 128.0 GB/s
Shared memory -
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.3 4.4
OpenCL 1.2 1.2
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
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