NVIDIA B300 vs NVIDIA GeForce GTX 950
GPU · Specs Compare
Graphics Card
Release Date
Sep 2025
Aug 2015
Generation
Server Blackwell
GeForce 900
Type
Desktop
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1665 MHz
1024 MHz
Boost Clock
2032 MHz
1188 MHz
Memory Clock
2000 MHz
1653 MHz
Memory
Memory Size
144GB
2GB
Memory Type
HBM3e
GDDR5
Memory Bus
4096bit
128bit
Bandwidth
4.10TB/s
105.8GB/s
Render Config
SM Count
148
—
Shading Units
18944
768
TMUs
592
48
ROPs
24
32
Tensor Cores
592
—
L1 Cache
256 KB (per SM)
48 KB (per SMM)
L2 Cache
50 MB
1024 KB
Theoretical Performance
Pixel Rate
48.77 GPixel/s
38.02 GPixel/s
Texture Rate
1202.9 GTexel/s
57.02 GTexel/s
FP16 (half)
1231.8 TFLOPS
—
FP32 (float)
76.99 TFLOPS
1.825 TFLOPS
FP64 (double)
1202.9 GFLOPS
57.02 GFLOPS
Graphics Processor
GPU Name
GB110
GM206
Architecture
Blackwell Ultra
Maxwell 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
104 billion
2.94 billion
Die Size
Unknown
228 mm²
GPU Variant
—
GM206-250-A1
Board Design
TDP
1400W
90W
Suggested PSU
1800 W
250 W
Outputs
No outputs
1x DVI1x HDMI 2.03x DisplayPort 1.4a
Power Connectors
—
1x 6-pin
Graphics Features
DirectX
N/A
12 (12_1)
OpenGL
N/A
4.6
OpenCL
3.0
3.0
Vulkan
N/A
1.3
CUDA
10.3
5.2
Shader Model
N/A
6.4
Benchmark
3DMark Time Spy
—
1,903
3DMark Time Spy Extreme
—
396
▲ Specs Compare
Data sourced from official specifications and benchmark tests.