NVIDIA GeForce RTX 4080 vs NVIDIA A800 PCIe 40 GB
AI GPU
We compared a Desktop platform GPU: 16GB VRAM GeForce RTX 4080 and a GPU: 40GB VRAM A800 PCIe 40 GB to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4080 's Advantages
Boost Clock has increased by 78% (2505MHz vs 1410MHz)
2816 additional rendering cores
NVIDIA A800 PCIe 40 GB 's Advantages
More VRAM (40GB vs 16GB)
Larger VRAM bandwidth (1555GB/s vs 716.8GB/s)
Lower TDP (250W vs 320W)
Score
Benchmark
FP32 (float)
GeForce RTX 4080
+150%
48.74 TFLOPS
A800 PCIe 40 GB
19.49 TFLOPS
Graphics Card
Sep 2022
Release Date
Nov 2022
GeForce 40
Generation
Ampere
Desktop
Type
AI GPU
PCIe 4.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
2205 MHz
Base Clock
765 MHz
2505 MHz
Boost Clock
1410 MHz
1400 MHz
Memory Clock
1215 MHz
Memory
16GB
Memory Size
40GB
GDDR6X
Memory Type
HBM2e
256bit
Memory Bus
5120bit
716.8GB/s
Bandwidth
1555GB/s
Render Config
-
-
-
76
SM Count
108
9728
Shading Units
6912
304
TMUs
432
112
ROPs
160
304
Tensor Cores
432
76
RT Cores
-
128 KB (per SM)
L1 Cache
192 KB (per SM)
64 MB
L2 Cache
40 MB
-
-
-
Theoretical Performance
280.6 GPixel/s
Pixel Rate
225.6 GPixel/s
761.5 GTexel/s
Texture Rate
609.1 GTexel/s
48.74 TFLOPS
FP16 (half)
77.97 TFLOPS
48.74 TFLOPS
FP32 (float)
19.49 TFLOPS
761.5 GFLOPS
FP64 (double)
9.746 TFLOPS
Board Design
320W
TDP
250W
700 W
Suggested PSU
600 W
1x HDMI 2.1
3x DisplayPort 1.4a
Outputs
No outputs
1x 16-pin
Power Connectors
8-pin EPS
Graphics Processor
AD103
GPU Name
GA100
AD103-300-A1
GPU Variant
-
Ada Lovelace
Architecture
Ampere
TSMC
Foundry
TSMC
5 nm
Process Size
7 nm
45.9 billion
Transistors
54.2 billion
379 mm²
Die Size
826 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
N/A
4.6
OpenGL
N/A
3.0
OpenCL
3.0
1.3
Vulkan
N/A
8.9
CUDA
8.0
6.7
Shader Model
N/A
