Radeon HD 8790M and GeForce GT 820M - video card comparison
Passmark - benchmark score Radeon HD 8790M vs GeForce GT 820M
Radeon HD 8790M
1344
GeForce GT 820M
584
Radeon HD 8790M
GeForce GT 820M
Architecture
GCN (2011−2017)
Fermi 2.0 (2010−2014)
GPU code name
Mars XTX
GF117
Market segment
Laptop
Desktop
Release date
November 2012
November 2013
Interface
MXM-A (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
Boost clock speed
900 MHz
-
Core clock speed
850 MHz
775 MHz
Floating-point performance
691.2 gflops
297.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
950 million
585 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
unknown
15 Watt
Texture fill rate
21.60
12.40
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4500 MHz
1800 MHz
Memory bandwidth
64 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
N/A