Mobility Radeon HD 4870 and GeForce GT 745M - video card comparison
Mobility Radeon HD 4870
GeForce GT 745M
Architecture
Terascale 1 (2008−2010)
Kepler (2012−2018)
GPU code name
M98-XT
N14P-LP/GS
Market segment
Laptop
Laptop
Release date
January 2009
April 2013
Bus support
-
PCI Express 3.0
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Core clock speed
550 MHz
837 MHz
Floating-point performance
880.0 gflops
642.8 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
1,270 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
-
45 Watt
Texture fill rate
22.00
17.57
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
888 MHz
1800 MHz
Memory bandwidth
56.83 GB/s
64 GB/s
Shared memory
-
-
Standard memory configuration
-
DDR3/GDDR5
Display Connectors
No outputs
No outputs
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
10.1 (10_1)
12 API
CUDA
-
+
OpenCL
1.1
1.1
OpenGL
3.3
4.5
Shader Model
4.1
5.1
Vulkan
N/A
1.1.126
3D Vision / 3DTV Play
-
+
Blu-Ray 3D Support
-
+
H.264, VC1, MPEG2 1080p video decoder
-
+
Optimus
-
+
TrueHD and DTS-HD audio bitstreaming
-
+