GeForce GT 745M and Radeon RX 640 - video card comparison
Passmark - benchmark score GeForce GT 745M vs Radeon RX 640
GeForce GT 745M
1125
Radeon RX 640
2020
GeForce GT 745M
Radeon RX 640
Architecture
Kepler (2012−2018)
Polaris (2016−2019)
GPU code name
N14P-LP/GS
Polaris 12
Market segment
Laptop
Laptop
Release date
April 2013
August 2019
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
-
1218 MHz
Core clock speed
837 MHz
1218 MHz
Floating-point performance
642.8 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,270 million
2,200 million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
45 Watt
50 Watt
Texture fill rate
17.57
38.98
Memory type
DDR3, GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1800 MHz
6000 MHz
Memory bandwidth
64 GB/s
112.0 GB/s
Shared memory
-
-
Standard memory configuration
DDR3/GDDR5
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x 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 API
12 (12_0)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131
3D Vision / 3DTV Play
+
-
Blu-Ray 3D Support
+
-
FreeSync
-
+
H.264, VC1, MPEG2 1080p video decoder
+
-
Optimus
+
-
TrueHD and DTS-HD audio bitstreaming
+
-