Radeon R9 390 and Radeon R9 270 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon R9 270
Radeon R9 390
9182
Radeon R9 270
4435
Radeon R9 390
Radeon R9 270
Architecture
GCN 2.0 (2013−2017)
GCN 1.0 (2012−2020)
GPU code name
Grenada
Curacao
Market segment
Desktop
Desktop
Release date
June 2015
November 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
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
925 MHz
Floating-point performance
5,120 gflops
2,368 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
2,800 million
Pipelines / CUDA cores
2560
1280
Power consumption (TDP)
275 Watt
150 Watt
Texture fill rate
160.0
74.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
2 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
-
Memory bandwidth
384 GB/s
179.2 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
1
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
-
-