AMD Radeon HD 6870 X2 vs AMD Radeon RX 480
GPU · Specs Compare
Graphics Card
Release Date
Jul 2011
Jun 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
2000 MHz
Base Clock
—
1120 MHz
Boost Clock
—
1266 MHz
Memory
Memory Size
1024MB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
134.4GB/s
256.0GB/s
Render Config
Compute Units
14
36
Shading Units
1120
2304
TMUs
56
144
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
40.51 GPixel/s
Texture Rate
50.40 GTexel/s
182.3 GTexel/s
FP32 (float)
2.016 TFLOPS
5.834 TFLOPS
FP16 (half)
—
5.834 TFLOPS
FP64 (double)
—
364.6 GFLOPS
Graphics Processor
GPU Name
Barts
Ellesmere
GPU Variant
Barts XT(215-0798000)
Polaris 10 XT(215-0876184)
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
300W
150W
Suggested PSU
700 W
450 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
—
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
1.3
Shader Model
5.0
6.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.