GeForce GTX 660M and Radeon R7 (Carrizo) - video card comparison
GeForce GTX 660M
Radeon R7 (Carrizo)
Architecture
Kepler (2012−2018)
GCN 1.2/2.0 (2015−2016)
GPU code name
N13E-GE
Carrizo
Market segment
Laptop
Laptop
Release date
March 2012
June 2015
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
-
SLI options
+
-
Boost clock speed
950 MHz
800 MHz
Core clock speed
835 MHz
-
CUDA cores
384
-
Floating-point performance
729.6 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
2410 Million
Pipelines / CUDA cores
384
512
Power consumption (TDP)
50 Watt
12-35 Watt
Texture fill rate
30.4 billion/sec
-
Memory type
GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
128bit
64/128 Bit
Memory clock speed
2000 MHz
-
Memory bandwidth
64.0 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (FL 12_0)
CUDA
+
-
OpenCL
1.1
-
OpenGL
4.5
-
Shader Model
5.1
-
Vulkan
1.1.126
-
Optimus
+
-