Radeon HD 6870 and GeForce GTX 850M - video card comparison
Passmark - benchmark score Radeon HD 6870 vs GeForce GTX 850M
Radeon HD 6870
2285
GeForce GTX 850M
2591
Radeon HD 6870
GeForce GTX 850M
Architecture
Terascale 2 (2009−2015)
Maxwell (2014−2018)
GPU code name
RV940 Barts
N15P-GT
Market segment
Desktop
Laptop
Release date
October 2010
March 2014
Bus support
PCIe 2.0 x16
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
-
SLI options
-
+
Boost clock speed
900 MHz
-
Core clock speed
-
Up to 936 MHz
CUDA cores
-
640
Floating-point performance
2,016.0 gflops
1,155 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
1,870 million
Pipelines / CUDA cores
1120
640
Power consumption (TDP)
151 Watt
45 Watt
Texture fill rate
50.40
36.08
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
1050 MHz
Up to 2500 MHz
Memory bandwidth
134.4 GB/s
80.0 GB/s
Shared memory
-
-
Standard memory configuration
-
DDR3 or GDDR5
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
eDP 1.2 signal support
-
Up to 3840x2160
LVDS signal support
-
Up to 1920x1200
Eyefinity
1
-
VGA аnalog display support
-
Up to 2048x1536
DisplayPort Multimode (DP++) support
-
Up to 3840x2160
HDCP content protection
-
+
HDMI
+
+
7.1 channel HD audio on HDMI
-
+
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
-
1.1.126
Ansel
-
+
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
H.264, VC1, MPEG2 1080p video decoder
-
+
HD3D
-
-
Optimus
-
+
PowerTune
-
-
TrueAudio
-
-
TrueHD and DTS-HD audio bitstreaming
-
+
ZeroCore
-
-