NVIDIA B300 vs NVIDIA L40G
GPU · Specs Compare
Graphics Card
Release Date
Sep 2025
Oct 2022
Generation
Server Blackwell
Tesla Ada
Type
Desktop
Professional
Bus Interface
PCIe 5.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
1665 MHz
1005 MHz
Boost Clock
2032 MHz
2475 MHz
Memory Clock
2000 MHz
2250 MHz
Memory
Memory Size
144GB
24GB
Memory Type
HBM3e
GDDR6
Memory Bus
4096bit
384bit
Bandwidth
4.10TB/s
864.0GB/s
Render Config
SM Count
148
142
Shading Units
18944
18176
TMUs
592
568
ROPs
24
192
Tensor Cores
592
568
L1 Cache
256 KB (per SM)
128 KB (per SM)
L2 Cache
50 MB
48 MB
RT Cores
—
142
Theoretical Performance
Pixel Rate
48.77 GPixel/s
475.2 GPixel/s
Texture Rate
1202.9 GTexel/s
1406 GTexel/s
FP16 (half)
1231.8 TFLOPS
89.97 TFLOPS
FP32 (float)
76.99 TFLOPS
89.97 TFLOPS
FP64 (double)
1202.9 GFLOPS
1406 GFLOPS
Graphics Processor
GPU Name
GB110
AD102
Architecture
Blackwell Ultra
Ada Lovelace
Foundry
TSMC
TSMC
Process Size
5 nm
4 nm
Transistors
104 billion
76.3 billion
Die Size
Unknown
608 mm²
GPU Variant
—
AD102-???-A1
Board Design
TDP
1400W
300W
Suggested PSU
1800 W
700 W
Outputs
No outputs
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
—
1x 16-pin
Graphics Features
DirectX
N/A
12 Ultimate (12_2)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.3
CUDA
10.3
8.9
Shader Model
N/A
6.6
▲ Specs Compare
Data sourced from official specifications and benchmark tests.