AMD Radeon RX 580X Mobile vs AMD Radeon HD 6870
GPU Specs Compare
Graphics Card
Release Date
Apr 2018
Oct 2010
Generation
Mobility Radeon
Northern Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 2.0 x16
Clock Speeds
Base Clock
1000 MHz
-
Boost Clock
1077 MHz
-
Memory Clock
2000 MHz
1050 MHz
Memory
Memory Size
8GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
256.0GB/s
134.4GB/s
Render Config
Compute Units
36
14
Shading Units
2304
1120
TMUs
144
56
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
2 MB
512 KB
Theoretical Performance
Pixel Rate
34.46 GPixel/s
28.80 GPixel/s
Texture Rate
155.1 GTexel/s
50.40 GTexel/s
FP16 (half)
4.963 TFLOPS
-
FP32 (float)
4.963 TFLOPS
2.016 TFLOPS
FP64 (double)
310.2 GFLOPS
-
Graphics Processor
GPU Name
Polaris 20
Barts
GPU Variant
Polaris 20M XT
Barts XT(215-0798000)
Architecture
GCN 4.0
TeraScale 2
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
40 nm
Transistors
5.7 billion
1.7 billion
Die Size
232 mm²
255 mm²
Board Design
TDP
100W
151W
Outputs
No outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
None
2x 6-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 (12_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.2
N/A
Shader Model
6.4
5.0