Radeon R9 M265X and GeForce GT 640M LE - video card comparison
Passmark - benchmark score Radeon R9 M265X vs GeForce GT 640M LE
Radeon R9 M265X
1172
GeForce GT 640M LE
720
Radeon R9 M265X
GeForce GT 640M LE
Architecture
GCN (2011−2017)
Fermi / Kepler (2012)
GPU code name
Venus Pro
N13P-LP
Market segment
Laptop
Laptop
Release date
January 2014
March 2012
Bus support
PCIe 3.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Boost clock speed
625 MHz
-
Compute units
10
-
Core clock speed
625 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
800.0 gflops
384.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
585 million
Pipelines / CUDA cores
640
384
Power consumption (TDP)
-
20 Watt
Texture fill rate
25.00
Up to 16.0 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
128 Bit
128bit
Memory clock speed
1125 MHz
1800 - 4000 MHz
Memory bandwidth
72 GB/s
Up to 28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
DirectX® 11
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
5.1
5.1
Vulkan
-
N/A
3D Blu-Ray
-
+
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-