Radeon RX 455 OEM and Radeon RX 540X - video card comparison
Radeon RX 455 OEM
Radeon RX 540X
Architecture
GCN 2.0 (2013−2017)
GCN 4.0 (2016−2020)
GPU code name
Tobago
Polaris 12
Market segment
Desktop
Laptop
Release date
June 2016
March 2018
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
None
Boost clock speed
-
1219 MHz
Core clock speed
1050 MHz
-
Floating-point performance
1,613 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,080 million
2,200 million
Pipelines / CUDA cores
768
512
Power consumption (TDP)
100 Watt
50 Watt
Texture fill rate
50.40
35.97
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
6500 MHz
6000 MHz
Memory bandwidth
104.0 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+