AMD Radeon HD 6870 vs AMD Radeon RX 550X Mobile
GPU Specs Compare
Graphics Card
Release Date
Oct 2010
Apr 2018
Generation
Northern Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x8
Clock Speeds
Memory Clock
1050 MHz
1500 MHz
Base Clock
-
1100 MHz
Boost Clock
-
1176 MHz
Memory
Memory Size
1024MB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
64bit
Bandwidth
134.4GB/s
48.00GB/s
Render Config
Compute Units
14
10
Shading Units
1120
640
TMUs
56
40
ROPs
32
16
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
28.80 GPixel/s
18.82 GPixel/s
Texture Rate
50.40 GTexel/s
47.04 GTexel/s
FP32 (float)
2.016 TFLOPS
1.505 TFLOPS
FP16 (half)
-
1.505 TFLOPS
FP64 (double)
-
94.08 GFLOPS
Graphics Processor
GPU Name
Barts
Polaris 23
GPU Variant
Barts XT(215-0798000)
Polaris 23 MXT
Architecture
TeraScale 2
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
14 nm
Transistors
1.7 billion
2.2 billion
Die Size
255 mm²
103 mm²
Board Design
TDP
151W
50W
Suggested PSU
450 W
-
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
No outputs
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