Radeon R9 280X and Radeon 550X Mobile - video card comparison
Radeon R9 280X
Radeon 550X Mobile
Architecture
GCN (2011−2017)
GCN 4.0 (2016−2020)
GPU code name
Thaiti XTL
Polaris 23
Market segment
Desktop
Laptop
Release date
October 2013
April 2018
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
-
Boost clock speed
1000 MHz
1287 MHz
Core clock speed
-
1100 MHz
Floating-point performance
4,096 gflops
1,647 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
4,313 million
2,200 million
Pipelines / CUDA cores
2048
640
Power consumption (TDP)
250 Watt
50 Watt
Texture fill rate
128.0
51.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
-
6000 MHz
Memory bandwidth
288 GB/s
48 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12 (12_0)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
+
1.2.131
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-