GeForce 820A and Radeon HD 3870 - video card comparison
Passmark - benchmark score GeForce 820A vs Radeon HD 3870
GeForce 820A
572
Radeon HD 3870
572
GeForce 820A
Radeon HD 3870
Architecture
Fermi 2.0 (2010−2014)
TeraScale (2005−2013)
GPU code name
GF117
RV670
Market segment
Desktop
Desktop
Release date
March 2014
November 2007
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
775 MHz
777 MHz
Floating-point performance
297.6 gflops
497.3 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
585 million
666 million
Pipelines / CUDA cores
96
320
Power consumption (TDP)
15 Watt
106 Watt
Texture fill rate
12.40
12.43
Memory type
DDR3
GDDR4
Maximum RAM amount
1 GB
512 MB
Memory bus width
64 Bit
256 Bit
Memory clock speed
1800 MHz
2252 MHz
Memory bandwidth
14.4 GB/s
72.06 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
10.1 (10_1)
CUDA
2.1
-
OpenCL
1.1
N/A
OpenGL
4.6
3.3
Shader Model
5.1
4.1
Vulkan
N/A
N/A