AMD Radeon HD 6870 vs AMD Radeon RX 560DX
GPU Specs Compare
Graphics Card
Release Date
Oct 2010
Apr 2018
Generation
Northern Islands
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x8
Clock Speeds
Memory Clock
1050 MHz
1500 MHz
Base Clock
-
1090 MHz
Boost Clock
-
1175 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
128bit
Bandwidth
134.4GB/s
96.00GB/s
Render Config
Compute Units
14
14
Shading Units
1120
896
TMUs
56
56
ROPs
32
16
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
18.80 GPixel/s
Texture Rate
50.40 GTexel/s
65.80 GTexel/s
FP32 (float)
2.016 TFLOPS
2.106 TFLOPS
FP16 (half)
-
2.106 TFLOPS
FP64 (double)
-
131.6 GFLOPS
Graphics Processor
GPU Name
Barts
Polaris 21
GPU Variant
Barts XT(215-0798000)
Polaris 21 XL
Architecture
TeraScale 2
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
14 nm
Transistors
1.7 billion
3 billion
Die Size
255 mm²
123 mm²
Board Design
TDP
151W
65W
Suggested PSU
450 W
250 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Power Connectors
2x 6-pin
None
Graphics Features
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
OpenCL
1.2
2.1
Vulkan
N/A
1.2
Shader Model
5.0
6.4