Radeon HD 6870 and Radeon 520 - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Radeon 520
Radeon HD 6870
2285
Radeon 520
811
Radeon HD 6870
Radeon 520
Architecture
Terascale 2 (2009−2015)
GCN 1.0 (2012−2020)
GPU code name
RV940 Barts
Oland
Market segment
Desktop
Laptop
Release date
October 2010
March 2017
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
900 MHz
-
Core clock speed
-
1030 MHz
Floating-point performance
2,016.0 gflops
659.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
1,040 million
Pipelines / CUDA cores
1120
320
Power consumption (TDP)
151 Watt
50 Watt
Texture fill rate
50.40
20.60
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1050 MHz
2250 MHz
Memory bandwidth
134.4 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI, 1x VGA
Eyefinity
1
-
HDMI
+
+
DisplayPort support
-
-
DirectX
DirectX® 11
12.0
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.0
Vulkan
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-