GeForce GTX 980M and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GTX 980M vs GeForce 840M
GeForce GTX 980M
7565
GeForce 840M
1121
GeForce GTX 980M
GeForce 840M
Architecture
Maxwell (2014−2018)
Maxwell (2014−2018)
GPU code name
GM204
N15S-GT
Market segment
Laptop
Laptop
Release date
October 2014
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x8
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
1127 MHz
1124 MHz
Core clock speed
1038 MHz
1029 MHz
CUDA cores
1536
-
Floating-point performance
3,462 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,200 million
-
Pipelines / CUDA cores
1536
384
Power consumption (TDP)
unknown
33 Watt
Texture fill rate
51.84
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
8 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
2500 MHz
2000 MHz
Memory bandwidth
160 GB/s
16.02 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
VGA аnalog display support
+
-
DisplayPort Multimode (DP++) support
+
-
HDMI
+
-
G-SYNC support
+
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.2
OpenGL
4.5
4.5
Shader Model
6.4
5.1
Vulkan
1.1.126
1.1.126
Ansel
+
-
BatteryBoost
+
-
GameStream
+
-
GameWorks
+
-
GameWorks
-
+
GeForce ShadowPlay
+
-
GPU Boost
2.0
2.0
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
+