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Radeon RX Vega 8 (Ryzen 4000/5000) and GeForce GT 645M - video card comparison

Radeon RX Vega 8 (Ryzen 4000/5000)

GeForce GT 645M

Architecture
Vega (2017−2021)
Kepler (2012−2018)
GPU code name
Vega
N13P-GS
Market segment
Laptop
Laptop
Release date
January 2020
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
-
PCIe 3.0 x16
Boost clock speed
2100 MHz
-
Core clock speed
-
Up to 710 MHz
CUDA cores
-
384
Floating-point performance
-
544.5 gflops
Manufacturing process technology
7 nm
28 nm
Number of transistors
-
1,270 million
Pipelines / CUDA cores
512
384
Power consumption (TDP)
15 Watt
32 Watt
Texture fill rate
-
22.7 billion/sec
Memory type
-
DDR3\GDDR5
Maximum RAM amount
-
2 GB
Memory bus width
-
128bit
Memory clock speed
-
1800 MHz
Memory bandwidth
-
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12_1
12 API
CUDA
-
+
OpenCL
-
1.1
OpenGL
-
4.5
Shader Model
-
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
Optimus
-
+