GeForce GT 640M LE and Mobility Radeon HD 4650 - video card comparison
Passmark - benchmark score GeForce GT 640M LE vs Mobility Radeon HD 4650
GeForce GT 640M LE
720
Mobility Radeon HD 4650
413
GeForce GT 640M LE
Mobility Radeon HD 4650
Architecture
Fermi / Kepler (2012)
Terascale 1 (2008−2010)
GPU code name
N13P-LP
M96
Market segment
Laptop
Laptop
Release date
March 2012
January 2009
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Core clock speed
Up to 500 MHz
550 MHz
CUDA cores
Up to 384
-
Floating-point performance
384.0 gflops
320.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
585 million
514 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
20 Watt
35 Watt
Texture fill rate
Up to 16.0 billion/sec
16.00
Memory type
DDR3\DDR5
GDDR3, DDR2, DDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
800 MHz
Memory bandwidth
Up to 28.8 GB/s
19.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
10.1 (10_1)
CUDA
+
-
OpenCL
1.1
1.1
OpenGL
4.5
3.3
Shader Model
5.1
4.1
Vulkan
N/A
N/A
3D Blu-Ray
+
-
Optimus
+
-