GeForce GT 620M and Radeon R5 340X OEM - video card comparison
GeForce GT 620M
Radeon R5 340X OEM
Architecture
Fermi (2010−2014)
GCN 1.0 (2012−2020)
GPU code name
N13P-GLP / N13M-GS
Oland
Market segment
Laptop
Desktop
Release date
March 2012
May 2015
Bus support
PCI Express 2.0
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
715 MHz
1050 MHz
Core clock speed
Up to 625 MHz
900 MHz
CUDA cores
96
-
Floating-point performance
253.4 gflops
806.4 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
585 million
950 million
Pipelines / CUDA cores
96
384
Power consumption (TDP)
15 Watt
65 Watt
Texture fill rate
Up to 10.0 billion/sec
21.60
Memory type
DDR3
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
Up to 128bit
64 Bit
Memory clock speed
1800 MHz
2000 MHz
Memory bandwidth
Up to 28.8 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x DisplayPort
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_1)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.2.131
3D Blu-Ray
+
-
Optimus
+
-