Radeon HD 4870 and Radeon HD 6620G - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 6620G
Radeon HD 4870
1411
Radeon HD 6620G
351
Radeon HD 4870
Radeon HD 6620G
Architecture
TeraScale (2005−2013)
Terascale 2 (2009−2015)
GPU code name
RV770
Llano
Market segment
Desktop
Laptop
Release date
June 2008
June 2011
Interface
PCIe 2.0 x16
IGP
Supplementary power connectors
2x 6-pin
-
Core clock speed
750 MHz
400 MHz
Floating-point performance
1,200.0 gflops
-
Manufacturing process technology
55 nm
32 nm
Number of transistors
956 million
1000 Million
Pipelines / CUDA cores
800
400
Power consumption (TDP)
150 Watt
35 Watt
Texture fill rate
30.00
8.880
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
256 Bit
System Shared
Memory clock speed
3600 MHz
System Shared
Memory bandwidth
115.2 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A