Radeon R9 280 and Radeon R9 255 OEM - video card comparison
Radeon R9 280
Radeon R9 255 OEM
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Tahiti
Cape Verde
Market segment
Desktop
Desktop
Release date
March 2014
December 2013
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
1x 6-pin
Boost clock speed
933 MHz
930 MHz
Core clock speed
-
900 MHz
Floating-point performance
3,344 gflops
952.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
1,500 million
Pipelines / CUDA cores
1792
512
Power consumption (TDP)
200 Watt
65 Watt
Texture fill rate
104.5
29.76
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
2 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1250 MHz
4600 MHz
Memory bandwidth
240 GB/s
73.6 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
12 (11_1)
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
+
1.2.131
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-