Radeon HD 6620G and GeForce GT 555M 3 GB - video card comparison
Radeon HD 6620G
GeForce GT 555M 3 GB
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Llano
GF106
Market segment
Laptop
Desktop
Release date
June 2011
March 2011
Interface
IGP
PCIe 2.0 x16
Supplementary power connectors
-
None
Core clock speed
400 MHz
590 MHz
Manufacturing process technology
32 nm
40 nm
Number of transistors
1000 Million
1,170 million
Pipelines / CUDA cores
400
144
Power consumption (TDP)
35 Watt
35 Watt
Texture fill rate
8.880
14.16
Memory type
System Shared
DDR3
Maximum RAM amount
System Shared
3 GB
Memory bus width
System Shared
192 Bit
Memory clock speed
System Shared
1800 MBps
Memory bandwidth
-
43.2 GB/s
Shared memory
+
-
Display Connectors
No outputs
Portable Device Dependent
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
N/A