GeForce GTX 870M and GeForce GTX 850M - video card comparison
Passmark - benchmark score GeForce GTX 870M vs GeForce GTX 850M
GeForce GTX 870M
3552
GeForce GTX 850M
2591
GeForce GTX 870M
GeForce GTX 850M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
N15P-GT
N15P-GT
Market segment
Laptop
Laptop
Release date
March 2014
March 2014
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
None
-
SLI options
+
+
Boost clock speed
967 MHz
-
Core clock speed
941 MHz
Up to 936 MHz
CUDA cores
1344
640
Floating-point performance
2,599 gflops
1,155 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
1,870 million
Pipelines / CUDA cores
1344
640
Power consumption (TDP)
100 Watt
45 Watt
Texture fill rate
108.3
36.08
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
6 GB
4 GB
Memory bus width
192 Bit
128 Bit
Memory clock speed
Up to 2500 MHz
Up to 2500 MHz
Memory bandwidth
120.0 GB/s
80.0 GB/s
Shared memory
-
-
Standard memory configuration
GDDR5
DDR3 or GDDR5
Display Connectors
No outputs
No outputs
eDP 1.2 signal support
Up to 3840x2160
Up to 3840x2160
LVDS signal support
Up to 1920x1200
Up to 1920x1200
VGA аnalog display support
Up to 2048x1536
Up to 2048x1536
DisplayPort Multimode (DP++) support
Up to 3840x2160
Up to 3840x2160
HDCP content protection
+
+
HDMI
+
+
7.1 channel HD audio on HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
Ansel
-
+
H.264, VC1, MPEG2 1080p video decoder
+
+
Optimus
+
+
TrueHD and DTS-HD audio bitstreaming
+
+