Radeon R7 M445 and GeForce GT 640 - video card comparison
Passmark - benchmark score Radeon R7 M445 vs GeForce GT 640
Radeon R7 M445
971
GeForce GT 640
1210
Radeon R7 M445
GeForce GT 640
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Meso
GK107
Market segment
Laptop
Desktop
Release date
May 2016
June 2012
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
920 MHz
-
Core clock speed
920 MHz
902 MHz
Floating-point performance
588.8 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,550 million
1,270 million
Pipelines / CUDA cores
320
384
Power consumption (TDP)
15-25 Watt
65 Watt
Texture fill rate
18.40
28.86
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
1782 MHz
Memory bandwidth
32 GB/s
28.51 GB/s
Shared memory
-
-
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