NVIDIA Tesla K20s vs NVIDIA B300
GPU · Specs Compare
Graphics Card
Release Date
Feb 2013
Sep 2025
Generation
Tesla
Server Blackwell
Type
Professional
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 5.0 x16
Clock Speeds
Memory Clock
1300 MHz
2000 MHz
Base Clock
—
1665 MHz
Boost Clock
—
2032 MHz
Memory
Memory Size
5GB
144GB
Memory Type
GDDR5
HBM3e
Memory Bus
320bit
4096bit
Bandwidth
208.0GB/s
4.10TB/s
Render Config
Shading Units
2496
18944
TMUs
208
592
ROPs
40
24
L1 Cache
16 KB (per SMX)
256 KB (per SM)
L2 Cache
1280 KB
50 MB
SM Count
—
148
Tensor Cores
—
592
Theoretical Performance
Pixel Rate
29.90 GPixel/s
48.77 GPixel/s
Texture Rate
119.6 GTexel/s
1202.9 GTexel/s
FP32 (float)
2.870 TFLOPS
76.99 TFLOPS
FP64 (double)
956.8 GFLOPS
1202.9 GFLOPS
FP16 (half)
—
1231.8 TFLOPS
Graphics Processor
GPU Name
GK110
GB110
Architecture
Kepler
Blackwell Ultra
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
7.08 billion
104 billion
Die Size
561 mm²
Unknown
Board Design
TDP
225W
1400W
Suggested PSU
550 W
1800 W
Outputs
No outputs
No outputs
Graphics Features
DirectX
12 (11_0)
N/A
OpenGL
4.6
N/A
OpenCL
3.0
3.0
Vulkan
1.1
N/A
CUDA
3.5
10.3
Shader Model
5.1
N/A
▲ Specs Compare
Data sourced from official specifications and benchmark tests.