NVIDIA Tesla K20s vs NVIDIA RTX PRO 4000 Blackwell SFF
GPU Specs Compare
Graphics Card
Release Date
Feb 2013
Aug 2025
Generation
Tesla
Blackwell PRO W
Type
Professional
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 5.0 x8
Clock Speeds
Memory Clock
1300 MHz
1125 MHz
Base Clock
-
577 MHz
Boost Clock
-
1432 MHz
Memory
Memory Size
5GB
24GB
Memory Type
GDDR5
GDDR7
Memory Bus
320bit
192bit
Bandwidth
208.0GB/s
432.0GB/s
Render Config
Shading Units
2496
8960
TMUs
208
280
ROPs
40
96
L1 Cache
16 KB (per SMX)
128 KB (per SM)
L2 Cache
1280 KB
48 MB
SM Count
-
70
Tensor Cores
-
280
RT Cores
-
70
Theoretical Performance
Pixel Rate
29.90 GPixel/s
137.5 GPixel/s
Texture Rate
119.6 GTexel/s
401.0 GTexel/s
FP32 (float)
2.870 TFLOPS
25.66 TFLOPS
FP64 (double)
956.8 GFLOPS
401.0 GFLOPS
FP16 (half)
-
25.66 TFLOPS
Graphics Processor
GPU Name
GK110
GB203
Architecture
Kepler
Blackwell 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
7.08 billion
45.6 billion
Die Size
561 mm²
378 mm²
Board Design
TDP
225W
70W
Suggested PSU
550 W
250 W
Outputs
No outputs
4x mini-DisplayPort 2.1b
Power Connectors
-
None
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.4
CUDA
3.5
12.0
Shader Model
5.1
6.8