Radeon HD 8790M and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon HD 8790M vs Radeon R7 M340
Radeon HD 8790M
1344
Radeon R7 M340
679
Radeon HD 8790M
Radeon R7 M340
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Mars XTX
Meso Pro DDR3
Market segment
Laptop
Laptop
Release date
November 2012
June 2015
Bus support
-
PCIe 3.0
Interface
MXM-A (3.0)
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
900 MHz
1021 MHz
Compute units
-
6
Core clock speed
850 MHz
1021 MHz
Floating-point performance
691.2 gflops
549.1 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
950 million
950 million
Pipelines / CUDA cores
384
320
Power consumption (TDP)
unknown
-
Texture fill rate
21.60
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
1000 MHz
Memory bandwidth
64 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
-
1
DirectX
12 (11_1)
DirectX® 12
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.6
4.4
Shader Model
5.1
5.1
Vulkan
1.2.131
+
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+