Radeon HD 8400E and GeForce GT 640M Mac Edition - video card comparison
Radeon HD 8400E
GeForce GT 640M Mac Edition
Architecture
GCN 2.0 (2013−2017)
Kepler (2012−2018)
GPU code name
Kalindi
GK107
Market segment
Desktop
Desktop
Release date
April 2013
February 2013
Interface
IGP
PCIe 3.0 x16
Core clock speed
600 MHz
745 MHz
Floating-point performance
-
572.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,178 million
1,270 million
Pipelines / CUDA cores
128
384
Power consumption (TDP)
25 Watt
32 Watt
Texture fill rate
4.800
23.84
Memory type
System Shared
GDDR5
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
64 Bit
Memory clock speed
System Shared
5000 MHz
Memory bandwidth
-
40 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (12_0)
12 (11_0)
CUDA
-
3.0
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.3
5.1
Vulkan
1.2.131
1.1.126