AMD Radeon RX 580 vs AMD Radeon HD 6850
GPU · Specs Compare
Graphics Card
Release Date
Apr 2017
Oct 2010
Generation
Polaris
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
1257 MHz
—
Boost Clock
1340 MHz
—
Memory Clock
2000 MHz
1000 MHz
Memory
Memory Size
8GB
1024MB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
256.0GB/s
128.0GB/s
Render Config
Compute Units
36
12
Shading Units
2304
960
TMUs
144
48
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
2 MB
512 KB
Theoretical Performance
Pixel Rate
42.88 GPixel/s
24.80 GPixel/s
Texture Rate
193.0 GTexel/s
37.20 GTexel/s
FP16 (half)
6.175 TFLOPS
—
FP32 (float)
6.175 TFLOPS
1488 GFLOPS
FP64 (double)
385.9 GFLOPS
—
Graphics Processor
GPU Name
Polaris 20
Barts
GPU Variant
Polaris 20 XTX(215-0910038)
Barts PRO(215-0798006)
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
185W
127W
Suggested PSU
450 W
300 W
Outputs
1x HDMI 2.0b3x DisplayPort 1.4a
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
Power Connectors
1x 8-pin
1x 6-pin
Graphics Features
DirectX
12 (12_0)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.3
N/A
Shader Model
6.7
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.