NVIDIA A800 PCIe 40 GB vs NVIDIA GB10
GPU · Specs Compare
Graphics Card
Release Date
Nov 2022
Oct 2025
Generation
Ampere
Server Blackwell
Type
AI GPU
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 5.0 x16
Clock Speeds
Base Clock
765 MHz
1665 MHz
Boost Clock
1410 MHz
2418 MHz
Memory Clock
1215 MHz
1067 MHz
Memory
Memory Size
40GB
128GB
Memory Type
HBM2e
LPDDR5X
Memory Bus
5120bit
256bit
Bandwidth
1555GB/s
273.2GB/s
Render Config
SM Count
108
48
Shading Units
6912
6144
TMUs
432
384
ROPs
160
48
Tensor Cores
432
384
L1 Cache
192 KB (per SM)
256 KB (per SM)
L2 Cache
40 MB
50 MB
RT Cores
—
48
Theoretical Performance
Pixel Rate
225.6 GPixel/s
116.1 GPixel/s
Texture Rate
609.1 GTexel/s
928.5 GTexel/s
FP16 (half)
77.97 TFLOPS
29.71 TFLOPS
FP32 (float)
19.49 TFLOPS
29.71 TFLOPS
FP64 (double)
9.746 TFLOPS
464.3 GFLOPS
Graphics Processor
GPU Name
GA100
GB20B
Architecture
Ampere
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
3 nm
Transistors
54.2 billion
Unknown
Die Size
826 mm²
Unknown
Board Design
TDP
250W
140W
Suggested PSU
600 W
300 W
Outputs
No outputs
1x HDMI
Power Connectors
8-pin EPS
None
Graphics Features
DirectX
N/A
N/A
OpenGL
N/A
N/A
OpenCL
3.0
3.0
Vulkan
N/A
N/A
CUDA
8.0
12.1
Shader Model
N/A
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.