Radeon HD 4870 and Radeon R7 M340 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon R7 M340
Radeon HD 4870
1411
Radeon R7 M340
679
Radeon HD 4870
Radeon R7 M340
Architecture
TeraScale (2005−2013)
GCN (2011−2017)
GPU code name
RV770
Meso Pro DDR3
Market segment
Desktop
Laptop
Release date
June 2008
June 2015
Bus support
-
PCIe 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1021 MHz
Compute units
-
6
Core clock speed
750 MHz
1021 MHz
Floating-point performance
1,200.0 gflops
549.1 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
950 million
Pipelines / CUDA cores
800
320
Power consumption (TDP)
150 Watt
-
Texture fill rate
30.00
17.16
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
1000 MHz
Memory bandwidth
115.2 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
Eyefinity
-
1
DirectX
10.1 (10_1)
DirectX® 12
Mantle
-
+
OpenCL
1.1
Not Listed
OpenGL
3.3
4.4
Shader Model
4.1
5.1
Vulkan
N/A
+
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+