GeForce GTX 660 Ti vs Radeon Pro Duo

When comparing GeForce GTX 660 Ti and Radeon Pro Duo, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GTX 660 Ti and Radeon Pro Duo is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  GeForce GTX 660 Ti Radeon Pro Duo
Power consumption (TDP) 150 Watt 350 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors Two 6-pin 3x 8-pin
Memory type GDDR5 High Bandwidth Memory (HBM)
Maximum RAM amount 2 GB 8 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 1x HDMI, 3x DisplayPort
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  • Radeon Pro Duo has 133% more power consumption, than GeForce GTX 660 Ti.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Radeon Pro Duo has 6 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 Pro Duo - with GCN 3.0.
  • GeForce GTX 660 Ti and Radeon Pro Duo are manufactured by 28 nm process technology.
  • Radeon Pro Duo is 268 mm longer, than GeForce GTX 660 Ti.
  • Memory clock speed of Radeon Pro Duo is 494 MHz higher, than GeForce GTX 660 Ti.

Game benchmarks

high / 1080p 21−24 50−55
ultra / 1080p 12−14 30−35
QHD / 1440p 8−9 27−30
4K / 2160p 5−6 14−16
low / 720p 40−45 75−80
medium / 1080p 27−30 60−65
The average gaming FPS of Radeon Pro Duo in Assassin's Creed Odyssey is 120% more, than GeForce GTX 660 Ti.

Full Specs

  GeForce GTX 660 Ti Radeon Pro Duo
Architecture Kepler GCN 3.0
Code name GK104 Capsaicin
Type Desktop Workstation
Release date 16 August 2012 26 April 2016
Pipelines 1344 4096
Core clock speed 915 MHz
Boost Clock 980 MHz 1000 MHz
Transistor count 3,540 million 8,900 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 102.5 billion/sec 256.0
Floating-point performance 2,459.5 gflops 2x 8,192 gflops
Length 9.5" (24.1 cm) 277 mm
Memory bus width 192-bit GDDR5 4096 Bit
Memory clock speed 6.0 GB/s 500 MHz
Memory bandwidth 144.2 GB/s 512 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 6.0
OpenGL 4.3 4.5
OpenCL 1.2 2.0
Vulkan 1.1.126 +
CUDA +
FreeSync +
CUDA cores 1344
Bus support PCI Express 3.0 PCIe 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 809 Mh/s
Eyefinity +
HD3D +
PowerTune +
TrueAudio +
ZeroCore +
Mantle +
Design reference
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
Compute units 128
AppAcceleration +
LiquidVR +
TressFX +
UVD +
Enduro +
FRTC +
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