GeForce GT 640 and Radeon RX 6600M - video card comparison
Passmark - benchmark score GeForce GT 640 vs Radeon RX 6600M
GeForce GT 640
1209
Radeon RX 6600M
14091
GeForce GT 640
Radeon RX 6600M
Architecture
Kepler (2012−2018)
RDNA 2 (2020−2022)
GPU code name
GK107
R21M-E65-70
Market segment
Desktop
Laptop
Release date
June 2012
September 2020
Interface
PCIe 3.0 x16
PCIe 4.0 x8
Supplementary power connectors
None
None
Boost clock speed
-
2177 MHz
Core clock speed
902 MHz
2068 MHz
Floating-point performance
692.7 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
1,270 million
11,060 million
Pipelines / CUDA cores
384
1792
Power consumption (TDP)
65 Watt
100 Watt (50 - 100 Watt TGP)
Texture fill rate
28.86
235.8
Memory type
DDR3
GDDR6
Maximum RAM amount
2 GB
8 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
14000 MHz
Memory bandwidth
28.51 GB/s
256.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
3.0
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2