GeForce GTX 1080 11Gbps and Radeon HD 6850 1440SP Edition - video card comparison
GeForce GTX 1080 11Gbps
Radeon HD 6850 1440SP Edition
Architecture
Pascal (2016−2021)
TeraScale 2 (2009−2015)
GPU code name
GP104
Cypress
Market segment
Desktop
Desktop
Release date
April 2017
August 2012
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 8-pin
2x 6-pin
Boost clock speed
1733 MHz
-
Core clock speed
1607 MHz
725 MHz
Floating-point performance
8,873 gflops
2,088 gflops
Manufacturing process technology
16 nm
40 nm
Number of transistors
7,200 million
2,154 million
Pipelines / CUDA cores
2560
1440
Power consumption (TDP)
180 Watt
151 Watt
Texture fill rate
277.3
52.20
Memory type
GDDR5X
GDDR5
Maximum RAM amount
8 GB
1 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
11008 MHz
4000 MHz
Memory bandwidth
352.3 GB/s
128.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 3x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_1)
11.2 (11_0)
CUDA
6.1
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
6.4
5.0
Vulkan
1.2.131
N/A