GeForce GT 820M and Radeon X1950 XT - video card comparison
GeForce GT 820M
Radeon X1950 XT
Architecture
Fermi 2.0 (2010−2014)
R500 (2005−2007)
GPU code name
GF117
R580+
Market segment
Desktop
Desktop
Release date
November 2013
October 2006
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
775 MHz
625 MHz
Floating-point performance
297.6 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
585 million
384 million
Pipelines / CUDA cores
96
-
Power consumption (TDP)
15 Watt
96 Watt
Texture fill rate
12.40
10.00
Memory type
DDR3
GDDR3
Maximum RAM amount
1 GB
256 MB
Memory bus width
64 Bit
256 Bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
14.4 GB/s
57.6 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
9.0c (9_3)
CUDA
2.1
-
OpenCL
1.1
N/A
OpenGL
4.6
2.0
Shader Model
5.1
3.0
Vulkan
N/A
N/A