NVIDIA A40 PCIe vs NVIDIA GeForce RTX 4090 D
GPU · Specs Compare
Graphics Card
Release Date
Oct 2020
Dec 2023
Generation
Tesla
GeForce 40
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1305 MHz
2280 MHz
Boost Clock
1740 MHz
2520 MHz
Memory Clock
1812 MHz
1313 MHz
Memory
Memory Size
48GB
24GB
Memory Type
GDDR6
GDDR6X
Memory Bus
384bit
384bit
Bandwidth
695.8GB/s
1008GB/s
Render Config
SM Count
84
114
Shading Units
10752
14592
TMUs
336
456
ROPs
112
176
Tensor Cores
336
456
RT Cores
84
114
L1 Cache
128 KB (per SM)
128 KB (per SM)
L2 Cache
6 MB
72 MB
Theoretical Performance
Pixel Rate
194.9 GPixel/s
443.5 GPixel/s
Texture Rate
584.6 GTexel/s
1149 GTexel/s
FP16 (half)
37.42 TFLOPS
73.54 TFLOPS
FP32 (float)
37.42 TFLOPS
73.54 TFLOPS
FP64 (double)
584.6 GFLOPS
1149 GFLOPS
Graphics Processor
GPU Name
GA102
AD102
Architecture
Ampere
Ada Lovelace
Foundry
Samsung
TSMC
Process Size
8 nm
5 nm
Transistors
28.3 billion
76.3 billion
Die Size
628 mm²
609 mm²
GPU Variant
—
AD102-250-A1
Board Design
TDP
300W
425W
Suggested PSU
700 W
800 W
Outputs
3x DisplayPort 1.4a
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
8-pin EPS
1x 16-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.3
1.3
CUDA
8.6
8.9
Shader Model
6.6
6.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.