GeForce 820M and GeForce 7900 GT - video card comparison
Passmark - benchmark score GeForce 820M vs GeForce 7900 GT
GeForce 820M
511
GeForce 7900 GT
266
GeForce 820M
GeForce 7900 GT
Architecture
Fermi (2010−2014)
Curie (2003−2013)
GPU code name
N15V-GM
G71
Market segment
Laptop
Desktop
Release date
January 2014
March 2006
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
775 MHz
450 MHz
Floating-point performance
240.0 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
585 million
278 million
Pipelines / CUDA cores
96
-
Power consumption (TDP)
15 Watt
48 Watt
Texture fill rate
10.00
10.80
Memory type
DDR3
GDDR3
Maximum RAM amount
2 GB
256 MB
Memory bus width
64 Bit
256 Bit
Memory clock speed
1800 MHz
1320 MHz
Memory bandwidth
14.4 GB/s
42.24 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
9.0c (9_3)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
2.1
Shader Model
5.1
3.0
Vulkan
N/A
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-