Radeon R5 Graphics and GeForce GT 640 - video card comparison
Radeon R5 Graphics
GeForce GT 640
Architecture
GCN 2.0 (2013−2017)
Kepler (2012−2018)
GPU code name
Spectre SL
GK107
Market segment
Desktop
Desktop
Release date
September 2014
June 2012
Interface
IGP
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
720 MHz
-
Core clock speed
497 MHz
902 MHz
Floating-point performance
388.1 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,410 million
1,270 million
Pipelines / CUDA cores
256
384
Power consumption (TDP)
15 Watt
65 Watt
Texture fill rate
7.952
28.86
Memory type
System Shared
DDR3
Maximum RAM amount
System Shared
2 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
1782 MHz
Memory bandwidth
-
28.51 GB/s
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (12_0)
12 (11_0)
CUDA
-
3.0
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.0
5.1
Vulkan
1.2.131
1.1.126