Radeon HD 6620G and Radeon HD 3870 - video card comparison
Passmark - benchmark score Radeon HD 6620G vs Radeon HD 3870
Radeon HD 6620G
351
Radeon HD 3870
572
Radeon HD 6620G
Radeon HD 3870
Architecture
Terascale 2 (2009−2015)
TeraScale (2005−2013)
GPU code name
Llano
RV670
Market segment
Laptop
Desktop
Release date
June 2011
November 2007
Interface
IGP
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
400 MHz
777 MHz
Floating-point performance
-
497.3 gflops
Manufacturing process technology
32 nm
55 nm
Number of transistors
1000 Million
666 million
Pipelines / CUDA cores
400
320
Power consumption (TDP)
35 Watt
106 Watt
Texture fill rate
8.880
12.43
Memory type
System Shared
GDDR4
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
256 Bit
Memory clock speed
System Shared
2252 MHz
Memory bandwidth
-
72.06 GB/s
Shared memory
+
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
11.2 (11_0)
10.1 (10_1)
OpenCL
1.2
N/A
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
N/A
N/A