NVIDIA A40 PCIe vs NVIDIA RTX 4000 Ada Generation
We compared two Desktop platform GPUs: 48GB VRAM A40 PCIe and 20GB VRAM RTX 4000 Ada Generation to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA A40 PCIe 's Advantages
More VRAM (48GB vs 20GB)
Larger VRAM bandwidth (695.8GB/s vs 360.0GB/s)
4608 additional rendering cores
NVIDIA RTX 4000 Ada Generation 's Advantages
Released 2 years and 10 months late
Boost Clock has increased by 25% (2175MHz vs 1740MHz)
Lower TDP (130W vs 300W)
Score
Benchmark
FP32 (float)
A40 PCIe
+39%
37.42 TFLOPS
RTX 4000 Ada Generation
26.73 TFLOPS
Blender
A40 PCIe
3990
RTX 4000 Ada Generation
+18%
4737
Graphics Card
Oct 2020
Release Date
Aug 2023
Tesla
Generation
Workstation Ada
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
1305 MHz
Base Clock
1500 MHz
1740 MHz
Boost Clock
2175 MHz
1812 MHz
Memory Clock
2250 MHz
Memory
48GB
Memory Size
20GB
GDDR6
Memory Type
GDDR6
384bit
Memory Bus
160bit
695.8GB/s
Bandwidth
360.0GB/s
Render Config
-
-
-
84
SM Count
48
10752
Shading Units
6144
336
TMUs
192
112
ROPs
64
336
Tensor Cores
192
84
RT Cores
48
128 KB (per SM)
L1 Cache
128 KB (per SM)
6 MB
L2 Cache
48 MB
-
-
-
Theoretical Performance
194.9 GPixel/s
Pixel Rate
139.2 GPixel/s
584.6 GTexel/s
Texture Rate
417.6 GTexel/s
37.42 TFLOPS
FP16 (half)
26.73 TFLOPS
37.42 TFLOPS
FP32 (float)
26.73 TFLOPS
584.6 GFLOPS
FP64 (double)
417.6 GFLOPS
Board Design
300W
TDP
130W
700 W
Suggested PSU
300 W
3x DisplayPort 1.4a
Outputs
4x DisplayPort 1.4a
8-pin EPS
Power Connectors
1x 16-pin
Graphics Processor
GA102
GPU Name
AD104
-
-
-
Ampere
Architecture
Ada Lovelace
Samsung
Foundry
TSMC
8 nm
Process Size
5 nm
28.3 billion
Transistors
35.8 billion
628 mm²
Die Size
294 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.3
8.6
CUDA
8.9
6.6
Shader Model
6.8
