GeForce GTX 850M and GeForce GTX 490 - video card comparison
GeForce GTX 850M
GeForce GTX 490
Architecture
Maxwell (2014−2018)
Fermi (2010−2014)
GPU code name
N15P-GT
GF100
Market segment
Laptop
Desktop
Release date
March 2014
-
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
-
2x 8-pin
SLI options
+
-
Core clock speed
Up to 936 MHz
608 MHz
CUDA cores
640
-
Floating-point performance
1,155 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,870 million
3,100 million
Pipelines / CUDA cores
640
480
Power consumption (TDP)
45 Watt
365 Watt
Texture fill rate
36.08
36.48
Memory type
DDR3, GDDR5
GDDR5
Maximum RAM amount
4 GB
1536 MB
Memory bus width
128 Bit
384 Bit
Memory clock speed
Up to 2500 MHz
3.4 GB/s
Memory bandwidth
80.0 GB/s
164.0 GB/s
Shared memory
-
-
Standard memory configuration
DDR3 or GDDR5
-
Display Connectors
No outputs
3x DVI, 1x mini-DisplayPort
eDP 1.2 signal support
Up to 3840x2160
-
LVDS signal support
Up to 1920x1200
-
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
+
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
2.0
OpenCL
1.1
1.1
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A
Ansel
+
-
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
TrueHD and DTS-HD audio bitstreaming
+
-