NVIDIA RTX PRO 4000 Blackwell SFF vs NVIDIA Tesla K20c
GPU Specs Compare
Graphics Card
Release Date
Aug 2025
Nov 2012
Generation
Blackwell PRO W
Tesla
Type
Desktop
Professional
Bus Interface
PCIe 5.0 x8
PCIe 2.0 x16
Clock Speeds
Base Clock
577 MHz
-
Boost Clock
1432 MHz
-
Memory Clock
1125 MHz
1300 MHz
Memory
Memory Size
24GB
5GB
Memory Type
GDDR7
GDDR5
Memory Bus
192bit
320bit
Bandwidth
432.0GB/s
208.0GB/s
Render Config
SM Count
70
-
Shading Units
8960
2496
TMUs
280
208
ROPs
96
40
Tensor Cores
280
-
RT Cores
70
-
L1 Cache
128 KB (per SM)
16 KB (per SMX)
L2 Cache
48 MB
1280 KB
Theoretical Performance
Pixel Rate
137.5 GPixel/s
36.71 GPixel/s
Texture Rate
401.0 GTexel/s
146.8 GTexel/s
FP16 (half)
25.66 TFLOPS
-
FP32 (float)
25.66 TFLOPS
3.524 TFLOPS
FP64 (double)
401.0 GFLOPS
1175 GFLOPS
Graphics Processor
GPU Name
GB203
GK110
Architecture
Blackwell 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
7.08 billion
Die Size
378 mm²
561 mm²
GPU Variant
-
GK110-885-KA-A1
Board Design
TDP
70W
225W
Suggested PSU
250 W
550 W
Outputs
4x mini-DisplayPort 2.1b
No outputs
Power Connectors
None
1x 6-pin + 1x 8-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.4
1.1
CUDA
12.0
3.5
Shader Model
6.8
5.1
📊 Benchmark
OctaneBench
-
55