GeForce GT 640M LE and Radeon R5 M315 - video card comparison
Passmark - benchmark score GeForce GT 640M LE vs Radeon R5 M315
GeForce GT 640M LE
720
Radeon R5 M315
487
GeForce GT 640M LE
Radeon R5 M315
Architecture
Fermi / Kepler (2012)
GCN (2011−2017)
GPU code name
N13P-LP
Meso LE (DDR3)
Market segment
Laptop
Laptop
Release date
March 2012
June 2015
Bus support
PCI Express 2.0, PCI Express 3.0
PCIe 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Compute units
-
5
Core clock speed
Up to 500 MHz
970 MHz
CUDA cores
Up to 384
-
Floating-point performance
384.0 gflops
745.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
585 million
1,550 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
20 Watt
-
Texture fill rate
Up to 16.0 billion/sec
23.28
Memory type
DDR3\DDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 - 4000 MHz
1000 MHz
Memory bandwidth
Up to 28.8 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
DirectX® 12
CUDA
+
-
Mantle
-
+
OpenCL
1.1
Not Listed
OpenGL
4.5
4.4
Shader Model
5.1
6.0
Vulkan
N/A
-
3D Blu-Ray
+
-
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
HD3D
-
+
Optimus
+
-
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+