GeForce GTX 660 and Radeon R6 (Carrizo) - video card comparison
GeForce GTX 660
Radeon R6 (Carrizo)
Architecture
Kepler (2012−2018)
GCN 1.2/2.0 (2015−2016)
GPU code name
GK106
Carrizo
Market segment
Desktop
Laptop
Release date
September 2012
June 2015
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
One 6-pin
-
SLI options
+
-
Boost clock speed
1033 MHz
800 MHz
Core clock speed
980 MHz
-
CUDA cores
960
-
Floating-point performance
1,981 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
2410 Million
Pipelines / CUDA cores
960
384
Power consumption (TDP)
140 Watt
12-35 Watt
Texture fill rate
78.4 billion/sec
-
Memory type
GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
192-bit GDDR5
64/128 Bit
Memory clock speed
6.0 GB/s
-
Memory bandwidth
144.2 GB/s
-
Shared memory
-
+
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
-
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (FL 12_0)
CUDA
+
-
OpenCL
1.2
-
OpenGL
4.3
-
Shader Model
5.1
-
Vulkan
1.1.126
-
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-