Radeon R9 270X and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon R9 270X vs Radeon R7 M340
Radeon R9 270X
5036
Radeon R7 M340
679
Radeon R9 270X
Radeon R7 M340
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Curacao XT
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
October 2013
June 2015
Bus support
PCIe 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2 x 6-pin
None
Boost clock speed
1050 MHz
1021 MHz
Compute units
-
6
Core clock speed
-
1021 MHz
Floating-point performance
2,688 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
950 million
Pipelines / CUDA cores
1280
320
Power consumption (TDP)
180 Watt
-
Texture fill rate
84.00
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
-
1000 MHz
Memory bandwidth
179.2 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
+
1
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
DirectX® 12
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.6
4.4
Shader Model
5.1
5.1
Vulkan
+
+
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
DualGraphics
-
1
Enduro
-
-
FreeSync
1
1
HD3D
+
+
LiquidVR
1
-
PowerTune
-
+
Switchable graphics
-
1
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
+