Radeon R7 M445 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon R7 M445 vs GeForce GT 640M
Radeon R7 M445
971
GeForce GT 640M
943
Radeon R7 M445
GeForce GT 640M
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Meso
N13P-GS
Market segment
Laptop
Laptop
Release date
May 2016
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Boost clock speed
920 MHz
645 MHz
Core clock speed
920 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
588.8 gflops
480.0 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
32 Watt
Texture fill rate
18.40
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
2000 MHz
1800 - 4000 MHz
Memory bandwidth
32 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (12_0)
12 API
CUDA
-
+
OpenCL
2.0
1.1
OpenGL
4.6
4.5
Shader Model
6.0
5.1
Vulkan
1.2.131
1.1.126
3D Blu-Ray
-
+
Optimus
-
+