Radeon HD 7950 and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon HD 7950 vs Radeon R7 M340
Radeon HD 7950
4907
Radeon R7 M340
679
Radeon HD 7950
Radeon R7 M340
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Tahiti
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
January 2012
June 2015
Bus support
PCIe 3.0 x16
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
1250 MHz
1021 MHz
Compute units
28
6
Core clock speed
-
1021 MHz
Floating-point performance
2,867 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
4,313 million
950 million
Pipelines / CUDA cores
1792
320
Power consumption (TDP)
200 Watt
-
Texture fill rate
89.60
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
1250 MHz
1000 MHz
Memory bandwidth
240 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
1
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
DirectX® 12
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.6
4.4
Shader Model
5.1
5.1
Vulkan
-
+
AppAcceleration
+
-
CrossFire
1
-
DualGraphics
-
1
Enduro
-
-
FreeSync
1
1
HD3D
-
+
PowerTune
+
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
+
+