GeForce GTX 660 vs Mobility Radeon HD 4850

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660 and Mobility Radeon HD 4850. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660 and Mobility Radeon HD 4850. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Mobility Radeon HD 4850 is a Laptop Graphics Card

Note: Mobility Radeon HD 4850 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 4850 here:

Main Specs

  GeForce GTX 660 Mobility Radeon HD 4850
Power consumption (TDP) 140 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors One 6-pin
Memory type GDDR5 GDDR3
Maximum RAM amount 2 GB 1 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 is connected by PCIe 3.0 x16, and Mobility Radeon HD 4850 uses PCIe 2.0 x16 interface.
  • GeForce GTX 660 has 1 GB more memory, than Mobility Radeon HD 4850.
  • GeForce GTX 660 is used in Desktops, and Mobility Radeon HD 4850 - in Laptops.
  • GeForce GTX 660 is build with Kepler architecture, and Mobility Radeon HD 4850 - with Terascale 1.
  • Core clock speed of GeForce GTX 660 is 480 MHz higher, than Mobility Radeon HD 4850.
  • GeForce GTX 660 is manufactured by 28 nm process technology, and Mobility Radeon HD 4850 - by 55 nm process technology.
  • Memory clock speed of Mobility Radeon HD 4850 is 844 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 3−4
ultra / 1080p 12−14 1−2
QHD / 1440p 6−7 0−1
4K / 2160p 5−6
low / 720p 40−45 14−16
medium / 1080p 24−27 5−6
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 316% more, than Mobility Radeon HD 4850.

Full Specs

  GeForce GTX 660 Mobility Radeon HD 4850
Architecture Kepler Terascale 1
Code name GK106 M98
Type Desktop Laptop
Release date 6 September 2012 9 January 2009
Pipelines 960 800
Core clock speed 980 MHz 500 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 20.00
Floating-point performance 1,981 gflops 800.0 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 850 MHz
Memory bandwidth 144.2 GB/s 54.4 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 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
Laptop size large
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