Radeon R5 M335 and GeForce GT 640M LE - video card comparison
Passmark - benchmark score Radeon R5 M335 vs GeForce GT 640M LE
Radeon R5 M335
564
GeForce GT 640M LE
720
Radeon R5 M335
GeForce GT 640M LE
Architecture
GCN 1.0 (2012−2020)
Fermi / Kepler (2012)
GPU code name
Exo XT DDR3
N13P-LP
Market segment
Laptop
Laptop
Release date
June 2015
March 2012
Bus support
PCIe 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
-
Boost clock speed
1070 MHz
-
Compute units
5
-
Core clock speed
1070 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
684.8 gflops
384.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
690 million
585 million
Pipelines / CUDA cores
320
384
Power consumption (TDP)
unknown
20 Watt
Texture fill rate
21.40
Up to 16.0 billion/sec
Memory type
DDR3
DDR3\DDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128bit
Memory clock speed
1100 MHz
1800 - 4000 MHz
Memory bandwidth
14.4 GB/s
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
DirectX® 12
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
+
N/A
3D Blu-Ray
-
+
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-