GeForce GT 640M and Radeon R5 (Carrizo) - video card comparison
GeForce GT 640M
Radeon R5 (Carrizo)
Architecture
Kepler (2012−2018)
GCN 1.2/2.0 (2015−2016)
GPU code name
N13P-GS
Carrizo
Market segment
Laptop
Laptop
Release date
March 2012
June 2015
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
-
Boost clock speed
645 MHz
800 MHz
Core clock speed
Up to 625 MHz
-
CUDA cores
384
-
Floating-point performance
480.0 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
2410 Million
Pipelines / CUDA cores
384
256
Power consumption (TDP)
32 Watt
12-35 Watt
Texture fill rate
Up to 20.0 billion/sec
-
Memory type
DDR3\GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
128bit
64/128 Bit
Memory clock speed
1800 - 4000 MHz
-
Memory bandwidth
Up to 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
-
3D Blu-Ray
+
-
Optimus
+
-