AMD Radeon HD 6850 vs AMD Radeon RX 580X
GPU · Specs Compare
Graphics Card
Release Date
Oct 2010
Apr 2018
Generation
Northern Islands
Polaris
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1000 MHz
2000 MHz
Base Clock
—
1257 MHz
Boost Clock
—
1340 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
12
36
Shading Units
960
2304
TMUs
48
144
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
2 MB
Theoretical Performance
Pixel Rate
24.80 GPixel/s
42.88 GPixel/s
Texture Rate
37.20 GTexel/s
193.0 GTexel/s
FP32 (float)
1488 GFLOPS
6.175 TFLOPS
FP16 (half)
—
6.175 TFLOPS
FP64 (double)
—
385.9 GFLOPS
Graphics Processor
GPU Name
Barts
Polaris 20
GPU Variant
Barts PRO(215-0798006)
Polaris 20 XTX(215-0910038)
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
127W
185W
Suggested PSU
300 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
1x 8-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.