Radeon HD 6620G and GeForce GTX 745 OEM - video card comparison
Radeon HD 6620G
GeForce GTX 745 OEM
Architecture
Terascale 2 (2009−2015)
Maxwell (2014−2018)
GPU code name
Llano
GM107
Market segment
Laptop
Desktop
Release date
June 2011
February 2014
Interface
IGP
PCIe 3.0 x16
Supplementary power connectors
-
None
Core clock speed
400 MHz
1033 MHz
Floating-point performance
-
793.3 gflops
Manufacturing process technology
32 nm
28 nm
Number of transistors
1000 Million
1,870 million
Pipelines / CUDA cores
400
384
Power consumption (TDP)
35 Watt
55 Watt
Texture fill rate
8.880
24.79
Memory type
System Shared
DDR3
Maximum RAM amount
System Shared
4 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
1800 MHz
Memory bandwidth
-
28.8 GB/s
Shared memory
+
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
5.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126