GeForce 840M and Radeon R5 M230 Rebrand - video card comparison
GeForce 840M
Radeon R5 M230 Rebrand
Architecture
Maxwell (2014−2018)
GCN 1.0 (2012−2020)
GPU code name
N15S-GT
Sun
Market segment
Laptop
Desktop
Release date
March 2014
March 2013
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Boost clock speed
1124 MHz
825 MHz
Core clock speed
1029 MHz
750 MHz
Floating-point performance
863.2 gflops
528.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
690 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
33 Watt
-
Texture fill rate
17.98
16.50
Memory type
DDR3
DDR3
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
1800 MHz
Memory bandwidth
16.02 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_1)
CUDA
+
-
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131
GameWorks
+
-
GPU Boost
2.0
-
Optimus
+
-