GeForce GTX 645 OEM and Radeon E9171 MCM - video card comparison
GeForce GTX 645 OEM
Radeon E9171 MCM
Architecture
Kepler (2012−2018)
GCN 4.0 (2016−2020)
GPU code name
GK106
Lexa
Market segment
Desktop
Desktop
Release date
April 2013
October 2017
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
-
1219 MHz
Core clock speed
824 MHz
1124 MHz
Floating-point performance
949.2 gflops
1,248 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,540 million
2,200 million
Pipelines / CUDA cores
576
512
Power consumption (TDP)
65 Watt
40 Watt
Texture fill rate
39.55
39.01
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4000 MHz
6000 MHz
Memory bandwidth
64 GB/s
96 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (12_0)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131