AMD Radeon HD 6870 vs AMD Radeon RX 470
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Aug 2016
Generation
Northern Islands
Arctic Islands
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1050 MHz
1650 MHz
Base Clock
—
926 MHz
Boost Clock
—
1206 MHz
Memory
Memory Size
1024MB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
211.2GB/s
Render Config
Compute Units
14
32
Shading Units
1120
2048
TMUs
56
128
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
38.59 GPixel/s
Texture Rate
50.40 GTexel/s
154.4 GTexel/s
FP32 (float)
2.016 TFLOPS
4.940 TFLOPS
FP16 (half)
—
4.940 TFLOPS
FP64 (double)
—
308.7 GFLOPS
Graphics Processor
GPU Name
Barts
Ellesmere
GPU Variant
Barts XT(215-0798000)
Polaris 10 PRO(215-0876204)
Architecture
TeraScale 2
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
14 nm
Transistors
1.7 billion
5.7 billion
Die Size
255 mm²
232 mm²
Board Design
TDP
151W
120W
Suggested PSU
450 W
300 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
2x 6-pin
1x 6-pin
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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.