Radeon R9 390 and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon R7 M340
Radeon R9 390
9182
Radeon R7 M340
679
Radeon R9 390
Radeon R7 M340
Architecture
GCN 2.0 (2013−2017)
GCN (2011−2017)
GPU code name
Grenada
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
June 2015
June 2015
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
None
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
1021 MHz
Compute units
-
6
Core clock speed
-
1021 MHz
Floating-point performance
5,120 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
950 million
Pipelines / CUDA cores
2560
320
Power consumption (TDP)
275 Watt
-
Texture fill rate
160.0
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
0 MB
4 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
1000 MHz
1000 MHz
Memory bandwidth
384 GB/s
16 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
1
1
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
DirectX® 12
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
-
+