A40 PCIe and GeForce RTX 4090 - video card comparison
A40 PCIe
GeForce RTX 4090
Architecture
Ampere (2020−2022)
Ada Lovelace
GPU code name
GA102
AD102-300-A1
Market segment
Desktop
Desktop
Release date
October 2020
September 2022
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
Core clock speed
-
2235 MHz
Manufacturing process technology
8 nm
5 nm
Number of transistors
28,300 million
76,300 million
Pipelines / CUDA cores
10752
16384
Power consumption (TDP)
300 Watt
450 Watt
Texture fill rate
589.7
1,290
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
21000 MHz
Memory bandwidth
695.8 GB/s
1,008 GB/s
Shared memory
-
-
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
6.6
Vulkan
1.2
1.3