GeForce GTX 660 Rev. 2 and Radeon E9171 MCM - video card comparison
GeForce GTX 660 Rev. 2
Radeon E9171 MCM
Architecture
Kepler (2012−2018)
GCN 4.0 (2016−2020)
GPU code name
GK104
Lexa
Market segment
Desktop
Desktop
Release date
September 2014
October 2017
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
None
Boost clock speed
1032 MHz
1219 MHz
Core clock speed
980 MHz
1124 MHz
Floating-point performance
1,981 gflops
1,248 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
3,540 million
2,200 million
Pipelines / CUDA cores
960
512
Power consumption (TDP)
140 Watt
40 Watt
Texture fill rate
82.56
39.01
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
192 Bit
128 Bit
Memory clock speed
6008 MHz
6000 MHz
Memory bandwidth
144.2 GB/s
96 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (12_0)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131