GeForce GT 640 and Mobility Radeon HD 4650 - video card comparison
Passmark - benchmark score GeForce GT 640 vs Mobility Radeon HD 4650
GeForce GT 640
1209
Mobility Radeon HD 4650
413
GeForce GT 640
Mobility Radeon HD 4650
Architecture
Kepler (2012−2018)
Terascale 1 (2008−2010)
GPU code name
GK107
M96
Market segment
Desktop
Laptop
Release date
June 2012
January 2009
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
-
Core clock speed
902 MHz
550 MHz
Floating-point performance
692.7 gflops
320.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,270 million
514 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
65 Watt
35 Watt
Texture fill rate
28.86
16.00
Memory type
DDR3
GDDR3, DDR2, DDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
800 MHz
Memory bandwidth
28.51 GB/s
19.2 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
10.1 (10_1)
CUDA
3.0
-
OpenCL
1.2
1.1
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A