Radeon 540 and GeForce GT 640M - video card comparison
Passmark - benchmark score Radeon 540 vs GeForce GT 640M
Radeon 540
1420
GeForce GT 640M
946
Radeon 540
GeForce GT 640M
Architecture
GCN 4.0 (2016−2020)
Kepler (2012−2018)
GPU code name
Lexa
N13P-GS
Market segment
Desktop
Laptop
Release date
April 2017
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
-
Boost clock speed
1124 MHz
645 MHz
Core clock speed
1183 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
-
480.0 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
2,200 million
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
50 Watt
32 Watt
Texture fill rate
28.39
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
32 Bit
128bit
Memory clock speed
6 GB/s
1800 - 4000 MHz
Memory bandwidth
24 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
2x DisplayPort 1.4a
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (12_0)
12 API
CUDA
-
+
OpenCL
2.1
1.1
OpenGL
4.6
4.5
Shader Model
6.7
5.1
Vulkan
1.3
1.1.126
3D Blu-Ray
-
+
Optimus
-
+