Tesla T4 and A40 PCIe - video card comparison
Tesla T4
A40 PCIe
Architecture
Turing (2018−2021)
Ampere (2020−2022)
GPU code name
TU104
GA102
Market segment
Workstation
Desktop
Release date
September 2018
October 2020
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
None
8-pin EPS
Boost clock speed
1590 MHz
1755 MHz
Core clock speed
585 MHz
-
Manufacturing process technology
12 nm
8 nm
Number of transistors
13,600 million
28,300 million
Pipelines / CUDA cores
2560
10752
Power consumption (TDP)
70 Watt
300 Watt
Texture fill rate
254.4
589.7
Memory type
GDDR6
GDDR6
Maximum RAM amount
16 GB
48 GB
Memory bus width
256 Bit
384 Bit
Memory clock speed
10000 MHz
14.5 GB/s
Memory bandwidth
320.0 GB/s
695.8 GB/s
Display Connectors
No outputs
3x DisplayPort
DirectX
12 Ultimate (12_1)
12 Ultimate (12_2)
CUDA
7.5
8.6
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2.131
1.2