AMD Radeon HD 6850 1440SP Edition vs AMD Radeon RX 580X Mobile
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Apr 2018
Generation
Northern Islands
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 2.0 x16
MXM-B (3.0)
Clock Speeds
Memory Clock
1000 MHz
2000 MHz
Base Clock
—
1000 MHz
Boost Clock
—
1077 MHz
Memory
Memory Size
1024MB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
128.0GB/s
256.0GB/s
Render Config
Compute Units
18
36
Shading Units
1440
2304
TMUs
72
144
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
23.20 GPixel/s
34.46 GPixel/s
Texture Rate
52.20 GTexel/s
155.1 GTexel/s
FP32 (float)
2.088 TFLOPS
4.963 TFLOPS
FP64 (double)
417.6 GFLOPS
310.2 GFLOPS
FP16 (half)
—
4.963 TFLOPS
Graphics Processor
GPU Name
Cypress
Polaris 20
GPU Variant
Cypress PRO(215-0735043)
Polaris 20M XT
Architecture
TeraScale 2
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
40 nm
14 nm
Transistors
2.154 billion
5.7 billion
Die Size
334 mm²
232 mm²
Board Design
TDP
151W
100W
Suggested PSU
450 W
—
Outputs
2x DVI1x HDMI 1.3a1x 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
▲ Specs Compare
Data sourced from official specifications and benchmark tests.