A40 PCIe and GeForce RTX 4090 D - video card comparison
A40 PCIe
GeForce RTX 4090 D
Architecture
Ampere (2020−2022)
Ada Lovelace
GPU code name
GA102
AD102
Market segment
Desktop
Desktop
Release date
October 2020
December 2023
Interface
PCIe 4.0 x16
PCIe 4.0 x16
Supplementary power connectors
8-pin EPS
1x 16-pin
Boost clock speed
1755 MHz
2520 MHz
Manufacturing process technology
8 nm
5 nm
Number of transistors
28,300 million
76,300 million
Pipelines / CUDA cores
10752
14592
Power consumption (TDP)
300 Watt
425 Watt
Texture fill rate
589.7
1,149
Memory type
GDDR6
GDDR6X
Maximum RAM amount
48 GB
24 GB
Memory bus width
384 Bit
384 Bit
Memory clock speed
14.5 GB/s
21 GB/s
Memory bandwidth
695.8 GB/s
1,008 GB/s
Display Connectors
3x DisplayPort
1x HDMI 2.1, 3x DisplayPort 1.4a
HDMI
-
+
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
CUDA
8.6
8.9
OpenCL
2.0
3.0
OpenGL
4.6
4.6
Shader Model
6.5
6.7
Vulkan
1.2
1.3