Radeon R9 280X and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon R9 280X vs Radeon R7 M340
Radeon R9 280X
6012
Radeon R7 M340
679
Radeon R9 280X
Radeon R7 M340
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Thaiti XTL
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
1 x 6-pin + 1 x 8-pin
None
Boost clock speed
1000 MHz
1021 MHz
Compute units
-
6
Core clock speed
-
1021 MHz
Floating-point performance
4,096 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
950 million
Pipelines / CUDA cores
2048
320
Power consumption (TDP)
250 Watt
-
Texture fill rate
128.0
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
-
1000 MHz
Memory bandwidth
288 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
-
+