Radeon R9 390X and Radeon R9 280X - video card comparison
Passmark - benchmark score Radeon R9 390X vs Radeon R9 280X
Radeon R9 390X
9722
Radeon R9 280X
6012
Radeon R9 390X
Radeon R9 280X
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Grenada XT
Thaiti XTL
Market segment
Desktop
Desktop
Release date
June 2015
October 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
1 x 6-pin + 1 x 8-pin
Bridgeless CrossFire
1
-
Boost clock speed
1050 MHz
1000 MHz
Floating-point performance
5,914 gflops
4,096 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
4,313 million
Pipelines / CUDA cores
2816
2048
Power consumption (TDP)
275 Watt
250 Watt
Texture fill rate
184.8
128.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
3 GB
Memory bus width
512 Bit
384 Bit
Memory clock speed
1050 MHz
-
Memory bandwidth
384 GB/s
288 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
+
+
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
+
DirectX
DirectX® 12
DirectX® 12
Mantle
+
-
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.3
5.1
Vulkan
+
+
AppAcceleration
-
+
CrossFire
1
1
DDMA audio
+
+
Enduro
-
-
FreeSync
1
1
HD3D
-
+
LiquidVR
-
1
PowerTune
+
-
TressFX
-
1
TrueAudio
+
+
UVD
-
+
VCE
+
-
ZeroCore
-
-