Radeon R9 390 and Radeon R7 M270 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon R7 M270
Radeon R9 390
9182
Radeon R7 M270
789
Radeon R9 390
Radeon R7 M270
Architecture
GCN 2.0 (2013−2017)
GCN (2011−2017)
GPU code name
Grenada
Opal XT / Mars
Market segment
Desktop
Laptop
Release date
June 2015
January 2014
Bus support
PCIe 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
-
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
-
Core clock speed
-
825 MHz
Floating-point performance
5,120 gflops
633.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
950 million
Pipelines / CUDA cores
2560
384
Power consumption (TDP)
275 Watt
-
Texture fill rate
160.0
19.80
Memory type
GDDR5
Not Listed
Maximum RAM amount
0 MB
0 MB
Memory bus width
512 Bit
Not Listed
Memory clock speed
1000 MHz
-
Memory bandwidth
384 GB/s
28.8 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
DirectX® 11
Mantle
+
+
OpenCL
2.0
Not Listed
OpenGL
4.6
4.4
Shader Model
6.3
5.1
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
DualGraphics
-
1
Enduro
-
-
FreeSync
1
1
HD3D
-
+
PowerTune
+
+
Switchable graphics
-
1
TrueAudio
+
-
VCE
+
-
ZeroCore
-
+