Radeon HD 6870 and Quadro P400 - video card comparison
Passmark - benchmark score Radeon HD 6870 vs Quadro P400
Radeon HD 6870
2285
Quadro P400
1690
Radeon HD 6870
Quadro P400
Architecture
Terascale 2 (2009−2015)
Pascal (2016−2021)
GPU code name
RV940 Barts
GP107
Market segment
Desktop
Workstation
Release date
October 2010
February 2017
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
None
Boost clock speed
900 MHz
1252 MHz
Core clock speed
-
1228 MHz
Floating-point performance
2,016.0 gflops
679.9 gflops
Manufacturing process technology
40 nm
14 nm
Number of transistors
1,700 million
3,300 million
Pipelines / CUDA cores
1120
256
Power consumption (TDP)
151 Watt
30 Watt
Texture fill rate
50.40
20.03
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1050 MHz
4008 MHz
Memory bandwidth
134.4 GB/s
32.06 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
3x mini-DisplayPort
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (12_1)
CUDA
-
6.1
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
6.4
Vulkan
-
1.2.131
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-