GeForce GTX 970 and GeForce 820M - video card comparison
Passmark - benchmark score GeForce GTX 970 vs GeForce 820M
GeForce GTX 970
9932
GeForce 820M
511
GeForce GTX 970
GeForce 820M
Architecture
Maxwell (2014−2018)
Fermi (2010−2014)
GPU code name
GM204
N15V-GM
Market segment
Desktop
Laptop
Release date
September 2014
January 2014
Bus support
PCI Express 3.0
PCI Express 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Recommended system power (PSU)
500 Watt
-
Supplementary power connectors
2x 6-pins
-
SLI options
+
-
Boost clock speed
1178 MHz
-
Core clock speed
1050 MHz
775 MHz
CUDA cores
1664
-
Floating-point performance
3,920 gflops
240.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
585 million
Pipelines / CUDA cores
1664
96
Power consumption (TDP)
145 Watt
15 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
109 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
7.0 GB/s
1800 MHz
Memory bandwidth
224 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
G-SYNC support
+
-
Audio input for HDMI
Internal
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
6.4
5.1
Vulkan
1.1.126
N/A
GameStream
+
-
GameWorks
+
-
GameWorks
-
+
GeForce ShadowPlay
+
-
GPU Boost
2.0
2.0
Optimus
-
+