Radeon R9 390 and Radeon R9 290X - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon R9 290X
Radeon R9 390
9182
Radeon R9 290X
7648
Radeon R9 390
Radeon R9 290X
Architecture
GCN 2.0 (2013−2017)
GCN (2011−2017)
GPU code name
Grenada
Hawaii XT
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
1000 MHz
947 MHz
Floating-point performance
5,120 gflops
5,632 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
6,200 million
Pipelines / CUDA cores
2560
2816
Power consumption (TDP)
275 Watt
250 Watt
Texture fill rate
160.0
176.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
4 GB
Memory bus width
512 Bit
512 Bit
Memory clock speed
1000 MHz
1250 MHz
Memory bandwidth
384 GB/s
320 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
+
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
+
DirectX
DirectX® 12
DirectX® 12
Mantle
+
-
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.3
Vulkan
+
+
AppAcceleration
-
+
CrossFire
1
1
DDMA audio
+
+
Enduro
-
-
FreeSync
1
1
HD3D
-
+
LiquidVR
-
1
PowerTune
+
-
TressFX
-
1
TrueAudio
+
+
UVD
-
+
VCE
+
-
ZeroCore
-
-