GeForce 840M and GeForce 7900 GTX - video card comparison
Passmark - benchmark score GeForce 840M vs GeForce 7900 GTX
GeForce 840M
1121
GeForce 7900 GTX
399
GeForce 840M
GeForce 7900 GTX
Architecture
Maxwell (2014−2018)
Curie (2003−2013)
GPU code name
N15S-GT
G71
Market segment
Laptop
Desktop
Release date
March 2014
March 2006
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 1.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
650 MHz
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
-
278 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
33 Watt
84 Watt
Texture fill rate
17.98
15.60
Memory type
DDR3
GDDR3
Maximum RAM amount
4 GB
512 MB
Memory bus width
64 Bit
256 Bit
Memory clock speed
2000 MHz
1600 MHz
Memory bandwidth
16.02 GB/s
51.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
9.0c (9_3)
CUDA
+
-
OpenCL
1.2
N/A
OpenGL
4.5
2.1
Shader Model
5.1
3.0
Vulkan
1.1.126
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-