GeForce 940MX and Mobility Radeon HD 4870 X2 - video card comparison
GeForce 940MX
Mobility Radeon HD 4870 X2
Architecture
Maxwell (2014−2018)
Terascale 1 (2008−2010)
GPU code name
N16S-GTR-B/S
M98-XT
Market segment
Laptop
Laptop
Release date
March 2016
January 2009
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
-
Boost clock speed
1242 MHz
-
Core clock speed
1122 MHz
550 MHz
Floating-point performance
762.6 gflops
2x 880.0 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
1,870 million
956 million
Pipelines / CUDA cores
384
1600
Power consumption (TDP)
23 Watt
-
Texture fill rate
23.83
22.00
Memory type
DDR3, GDDR5
GDDR3, GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
256 Bit
Memory clock speed
4000 MHz
888 MHz
Memory bandwidth
40.1 GB/s
89.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
10.1 (10_1)
CUDA
+
-
OpenCL
1.2
1.1
OpenGL
4.5
3.3
Shader Model
5.1
4.1
Vulkan
1.1
N/A
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-