Radeon R7 250X and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon R7 250X vs Radeon R7 M340
Radeon R7 250X
2336
Radeon R7 M340
679
Radeon R7 250X
Radeon R7 M340
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Cape Verde
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
February 2014
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
None
Boost clock speed
1000 MHz
1021 MHz
Compute units
-
6
Core clock speed
-
1021 MHz
Floating-point performance
1,216 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
950 million
Pipelines / CUDA cores
640
320
Power consumption (TDP)
80 Watt
-
Texture fill rate
38.00
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1625 MHz
1000 MHz
Memory bandwidth
96 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
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
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+