GeForce GTX 660 Ti vs Radeon HD 4850 X2

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 Ti and Radeon HD 4850 X2, 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 4850 X2, check out specs charts below.

Main Specs

  GeForce GTX 660 Ti Radeon HD 4850 X2
Power consumption (TDP) 150 Watt 250 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors Two 6-pin 1x 6-pin + 1x 8-pin
Memory type GDDR5 GDDR3
Maximum RAM amount 2 GB 512 MB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 4x DVI, 1x S-Video
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  • Radeon HD 4850 X2 has 66% more power consumption, than GeForce GTX 660 Ti.
  • GeForce GTX 660 Ti is connected by PCIe 3.0 x16, and Radeon HD 4850 X2 uses PCIe 2.0 x16 interface.
  • Radeon HD 4850 X2 has 510 GB more memory, than GeForce GTX 660 Ti.
  • Both cards are used in Desktops.
  • GeForce GTX 660 Ti is build with Kepler architecture, and Radeon HD 4850 X2 - with TeraScale.
  • Core clock speed of GeForce GTX 660 Ti is 290 MHz higher, than Radeon HD 4850 X2.
  • GeForce GTX 660 Ti is manufactured by 28 nm process technology, and Radeon HD 4850 X2 - by 55 nm process technology.
  • Radeon HD 4850 X2 is 258 mm longer, than GeForce GTX 660 Ti.
  • Memory clock speed of Radeon HD 4850 X2 is 1984 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 3−4
ultra / 1080p 12−14 2−3
QHD / 1440p 8−9 0−1
4K / 2160p 5−6
low / 720p 40−45 14−16
medium / 1080p 27−30 5−6
The average gaming FPS of GeForce GTX 660 Ti in Assassin's Creed Odyssey is 333% more, than Radeon HD 4850 X2.

Full Specs

  GeForce GTX 660 Ti Radeon HD 4850 X2
Architecture Kepler TeraScale
Code name GK104 R700
Type Desktop Desktop
Release date 16 August 2012 7 November 2008
Pipelines 1344 800
Core clock speed 915 MHz 625 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 25.00
Floating-point performance 2,459.5 gflops 2x 1,000.0 gflops
Length 9.5" (24.1 cm) 267 mm
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 1990 MHz
Memory bandwidth 144.2 GB/s 63.68 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
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