GeForce GTX 870M and GeForce 405M - video card comparison
GeForce GTX 870M
GeForce 405M
Architecture
Kepler (2012−2018)
GT2xx (2009−2012)
GPU code name
N15P-GT
GT218
Market segment
Laptop
Laptop
Release date
March 2014
May 2012
Bus support
PCI Express 2.0, PCI Express 3.0
PCI-E 2.0
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
967 MHz
-
Core clock speed
941 MHz
606 MHz
CUDA cores
1344
16
Floating-point performance
2,599 gflops
38.78 gflops
Gigaflops
-
73
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
260 million
Pipelines / CUDA cores
1344
16
Power consumption (TDP)
100 Watt
14 Watt
Texture fill rate
108.3
4.848
Memory type
GDDR5
GDDR3, DDR3
Maximum RAM amount
6 GB
Up to 512 MB
Memory bus width
192 Bit
64 Bit
Memory clock speed
Up to 2500 MHz
Up to 800 (DDR3), Up to 800 (GDDR3) MHz
Memory bandwidth
120.0 GB/s
25.6 GB/s
Shared memory
-
-
Standard memory configuration
GDDR5
-
Display Connectors
No outputs
DisplayPort, HDMI, VGA, Dual Link DVI, Single Link DVI
eDP 1.2 signal support
Up to 3840x2160
-
LVDS signal support
Up to 1920x1200
-
Multi monitor support
-
+
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
+
-
Maximum VGA resolution
-
2048x1536
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
4.5
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
Power management
-
8.0
TrueHD and DTS-HD audio bitstreaming
+
-