GeForce GTX 970 and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GTX 970 vs GeForce 840M
GeForce GTX 970
9932
GeForce 840M
1121
GeForce GTX 970
GeForce 840M
Architecture
Maxwell (2014−2018)
Maxwell (2014−2018)
GPU code name
GM204
N15S-GT
Market segment
Desktop
Laptop
Release date
September 2014
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Recommended system power (PSU)
500 Watt
-
Supplementary power connectors
2x 6-pins
-
SLI options
+
-
Boost clock speed
1178 MHz
1124 MHz
Core clock speed
1050 MHz
1029 MHz
CUDA cores
1664
-
Floating-point performance
3,920 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
-
Pipelines / CUDA cores
1664
384
Power consumption (TDP)
145 Watt
33 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
109 billion/sec
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
7.0 GB/s
2000 MHz
Memory bandwidth
224 GB/s
16.02 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
1.2
OpenGL
4.4
4.5
Shader Model
6.4
5.1
Vulkan
1.1.126
1.1.126
GameStream
+
-
GameWorks
+
-
GameWorks
-
+
GeForce ShadowPlay
+
-
GPU Boost
2.0
2.0
Optimus
-
+