Radeon RX 580 and Radeon HD 6850 X2 - video card comparison
Passmark - benchmark score Radeon RX 580 vs Radeon HD 6850 X2
Radeon RX 580
9140
Radeon HD 6850 X2
2610
Radeon RX 580
Radeon HD 6850 X2
Architecture
Polaris (2016−2019)
TeraScale 2 (2009−2015)
GPU code name
Polaris 20
Barts
Market segment
Desktop
Desktop
Release date
April 2017
September 2011
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 8-pin
2x 8-pin
Boost clock speed
1340 MHz
-
Core clock speed
1257 MHz
800 MHz
Floating-point performance
6,175 gflops
2x 1,536.0 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
5,700 million
1,700 million
Pipelines / CUDA cores
2304
960
Power consumption (TDP)
185 Watt
254 Watt
Texture fill rate
193.0
38.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
8000 MHz
4200 MHz
Memory bandwidth
256.0 GB/s
134.4 GB/s
Display Connectors
1x HDMI, 3x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
11.2 (11_0)
OpenCL
2.0
1.2
OpenGL
4.6
4.4
Shader Model
6.4
5.0
Vulkan
1.2.131
N/A