GeForce GTX 680M and GeForce 820M - video card comparison
Passmark - benchmark score GeForce GTX 680M vs GeForce 820M
GeForce GTX 680M
3312
GeForce 820M
511
GeForce GTX 680M
GeForce 820M
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
N13E-GTX
N15V-GM
Market segment
Laptop
Laptop
Release date
June 2012
January 2014
Bus support
PCI Express 3.0
PCI Express 2.0
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
758 MHz
-
Core clock speed
720 MHz
775 MHz
CUDA cores
1344
-
Floating-point performance
2,038 gflops
240.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
585 million
Pipelines / CUDA cores
1344
96
Power consumption (TDP)
100 Watt
15 Watt
Texture fill rate
80.6 billion/sec
10.00
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
115.2 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 API
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
GameWorks
-
+
GPU Boost
-
2.0
Optimus
+
+