GeForce 820M and GeForce 8400M G - video card comparison
Passmark - benchmark score GeForce 820M vs GeForce 8400M G
GeForce 820M
511
GeForce 8400M G
60
GeForce 820M
GeForce 8400M G
Architecture
Fermi (2010−2014)
Tesla (2006−2010)
GPU code name
N15V-GM
G86M
Market segment
Laptop
Laptop
Release date
January 2014
May 2007
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
-
None
Core clock speed
775 MHz
400 MHz
Floating-point performance
240.0 gflops
12.8 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
585 million
210 million
Pipelines / CUDA cores
96
8
Power consumption (TDP)
15 Watt
10 Watt
Texture fill rate
10.00
3.200
Memory type
DDR3
GDDR3 / GDDR2
Maximum RAM amount
2 GB
256 MB
Memory bus width
64 Bit
64 Bit
Memory clock speed
1800 MHz
600 MHz
Memory bandwidth
14.4 GB/s
6.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
11.1 (10_0)
CUDA
+
1.1
OpenCL
1.1
1.1
OpenGL
4.5
3.3
Shader Model
5.1
4.0
Vulkan
N/A
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-