Radeon HD 4550 and GeForce GT 640M Mac Edition - video card comparison
Radeon HD 4550
GeForce GT 640M Mac Edition
Architecture
TeraScale (2005−2013)
Kepler (2012−2018)
GPU code name
RV710
GK107
Market segment
Desktop
Desktop
Release date
September 2008
February 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
-
Core clock speed
600 MHz
745 MHz
Floating-point performance
96 gflops
572.2 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
242 million
1,270 million
Pipelines / CUDA cores
80
384
Power consumption (TDP)
25 Watt
32 Watt
Texture fill rate
4.800
23.84
Memory type
DDR2
GDDR5
Maximum RAM amount
256 MB
512 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
1310 MHz
5000 MHz
Memory bandwidth
10.48 GB/s
40 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
10.1 (10_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.1
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126