GeForce 840M and GMA X4500 - video card comparison
GeForce 840M
GMA X4500
Architecture
Maxwell (2014−2018)
Generation 5.0 (2008)
GPU code name
N15S-GT
Eaglelake
Market segment
Laptop
Desktop
Release date
March 2014
June 2008
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 1.0 x16
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
533 MHz
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
65 nm
Pipelines / CUDA cores
384
80
Power consumption (TDP)
33 Watt
13 Watt
Texture fill rate
17.98
2.132
Memory type
DDR3
System Shared
Maximum RAM amount
4 GB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
2000 MHz
System Shared
Memory bandwidth
16.02 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
10.0
CUDA
+
-
OpenCL
1.2
N/A
OpenGL
4.5
2.0
Shader Model
5.1
4.0
Vulkan
1.1.126
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-