GeForce GTX 660 vs Radeon HD 4850

In this comparison between GeForce GTX 660 and Radeon HD 4850 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GTX 660 will be the best choice, for others Radeon HD 4850 will be their preference. Study the comparison tables below and make your choice.

Main Specs

  GeForce GTX 660 Radeon HD 4850
Power consumption (TDP) 140 Watt 110 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors One 6-pin 1x 6-pin
Memory type GDDR5 GDDR3
Maximum RAM amount 2 GB 512 MB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x S-Video
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  • GeForce GTX 660 has 27% more power consumption, than Radeon HD 4850.
  • GeForce GTX 660 is connected by PCIe 3.0 x16, and Radeon HD 4850 uses PCIe 2.0 x16 interface.
  • Radeon HD 4850 has 510 GB more memory, than GeForce GTX 660.
  • Both cards are used in Desktops.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon HD 4850 - with Terascale 1.
  • Core clock speed of GeForce GTX 660 is 355 MHz higher, than Radeon HD 4850.
  • GeForce GTX 660 is manufactured by 28 nm process technology, and Radeon HD 4850 - by 55 nm process technology.
  • Radeon HD 4850 is 237 mm longer, than GeForce GTX 660.
  • Memory clock speed of Radeon HD 4850 is 987 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 1−2
ultra / 1080p 12−14 0−1
QHD / 1440p 6−7 0−1
4K / 2160p 5−6
low / 720p 40−45 12−14
medium / 1080p 24−27 3−4
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 383% more, than Radeon HD 4850.

Full Specs

  GeForce GTX 660 Radeon HD 4850
Architecture Kepler Terascale 1
Code name GK106 RV770
Type Desktop Desktop
Release date 6 September 2012 25 June 2008
Pipelines 960 800
Core clock speed 980 MHz 625 MHz
Boost Clock 1033 MHz
Transistor count 2,540 million 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 78.4 billion/sec 25.00
Floating-point performance 1,981 gflops 1,000.0 gflops
Length 9.5" (24.1 cm) 246 mm
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 993 MHz
Memory bandwidth 144.2 GB/s 63.55 GB/s
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 960
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) 66 Mh/s
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