GeForce GT 640 and Radeon RX 6800 - video card comparison
Passmark - benchmark score GeForce GT 640 vs Radeon RX 6800
GeForce GT 640
1209
Radeon RX 6800
22945
GeForce GT 640
Radeon RX 6800
Architecture
Kepler (2012−2018)
Navi / RDNA2 (2020−2022)
GPU code name
GK107
Navi 21
Market segment
Desktop
Desktop
Release date
June 2012
November 2020
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
None
2x 8-pin
Boost clock speed
-
2105 MHz
Core clock speed
902 MHz
1815 MHz
Floating-point performance
692.7 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
1,270 million
26,800 million
Pipelines / CUDA cores
384
3840
Power consumption (TDP)
65 Watt
250 Watt
Texture fill rate
28.86
505.2
Memory type
DDR3
GDDR6
Maximum RAM amount
2 GB
16 GB
Memory bus width
128 Bit
256 Bit
Memory clock speed
1782 MHz
16000 MHz
Memory bandwidth
28.51 GB/s
512.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI
+
+
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
3.0
-
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2