Radeon R9 280X and Radeon X1900 XTX - video card comparison
Radeon R9 280X
Radeon X1900 XTX
Architecture
GCN (2011−2017)
R500 (2005−2007)
GPU code name
Thaiti XTL
R580
Market segment
Desktop
Desktop
Release date
October 2013
January 2006
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 1.0 x16
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
1x 6-pin
Boost clock speed
1000 MHz
-
Core clock speed
-
650 MHz
Floating-point performance
4,096 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
4,313 million
384 million
Pipelines / CUDA cores
2048
-
Power consumption (TDP)
250 Watt
135 Watt
Texture fill rate
128.0
10.40
Memory type
GDDR5
GDDR3
Maximum RAM amount
3 GB
512 MB
Memory bus width
384 Bit
256 Bit
Memory clock speed
-
1550 MBps
Memory bandwidth
288 GB/s
49.6 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x S-Video
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
9.0c (9_3)
Mantle
-
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1 (full)
Shader Model5.13.0
Vulkan
+
N/A
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-