Radeon R9 280 and Radeon Sky 900 - video card comparison
Radeon R9 280
Radeon Sky 900
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Tahiti
Tahiti
Market segment
Desktop
Desktop
Release date
March 2014
March 2013
Bus support
PCIe 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
2x 8-pin
Boost clock speed
933 MHz
950 MHz
Core clock speed
-
825 MHz
Floating-point performance
3,344 gflops
2x 3,405 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
4,313 million
Pipelines / CUDA cores
1792
3584
Power consumption (TDP)
200 Watt
300 Watt
Texture fill rate
104.5
106.4
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
6 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
1250 MHz
5000 MHz
Memory bandwidth
240 GB/s
480 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x mini-DisplayPort
Eyefinity
1
-
Dual-link DVI support
-
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
-
-