Radeon VII and GeForce GTX 645 OEM - video card comparison
Radeon VII
GeForce GTX 645 OEM
Architecture
Vega (2017−2021)
Kepler (2012−2018)
GPU code name
Vega 20
GK106
Market segment
Desktop
Desktop
Release date
February 2019
April 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
None
Boost clock speed
1750 MHz
-
Core clock speed
1400 MHz
824 MHz
Floating-point performance
-
949.2 gflops
Manufacturing process technology
7 nm
28 nm
Number of transistors
13,230 million
2,540 million
Pipelines / CUDA cores
3840
576
Power consumption (TDP)
295 Watt
65 Watt
Texture fill rate
420.0
39.55
Memory type
HBM2
GDDR5
Maximum RAM amount
16 GB
1 GB
Memory bus width
4096 Bit
128 Bit
Memory clock speed
1000 MHz
4000 MHz
Memory bandwidth
1024 GB/s
64 GB/s
Display Connectors
1x HDMI, 3x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_1)
12 (11_0)
CUDA
-
3.0
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126