NVIDIA Tesla K20c vs NVIDIA L40 CNX
We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 24GB VRAM L40 CNX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA Tesla K20c 's Advantages
Lower TDP (225W vs 300W)
NVIDIA L40 CNX 's Advantages
Released 9 years and 11 months late
Boost Clock2475MHz
More VRAM (24GB vs 5GB)
Larger VRAM bandwidth (864.0GB/s vs 208.0GB/s)
15680 additional rendering cores
Score
Benchmark
FP32 (float)
Tesla K20c
3.524 TFLOPS
L40 CNX
+2453%
89.97 TFLOPS
Graphics Card
Nov 2012
Release Date
Oct 2022
Tesla
Generation
Tesla Ada
Professional
Type
Professional
PCIe 2.0 x16
Bus Interface
PCIe 4.0 x16
Clock Speeds
-
Base Clock
1005 MHz
-
Boost Clock
2475 MHz
1300 MHz
Memory Clock
2250 MHz
Memory
5GB
Memory Size
24GB
GDDR5
Memory Type
GDDR6
320bit
Memory Bus
384bit
208.0GB/s
Bandwidth
864.0GB/s
Render Config
-
-
-
-
SM Count
142
2496
Shading Units
18176
208
TMUs
568
40
ROPs
192
-
Tensor Cores
568
-
RT Cores
142
16 KB (per SMX)
L1 Cache
128 KB (per SM)
1280 KB
L2 Cache
48 MB
-
-
-
Theoretical Performance
36.71 GPixel/s
Pixel Rate
475.2 GPixel/s
146.8 GTexel/s
Texture Rate
1406 GTexel/s
-
FP16 (half)
89.97 TFLOPS
3.524 TFLOPS
FP32 (float)
89.97 TFLOPS
1175 GFLOPS
FP64 (double)
1406 GFLOPS
Board Design
225W
TDP
300W
550 W
Suggested PSU
700 W
No outputs
Outputs
1x HDMI 2.1
3x DisplayPort 1.4a
1x 6-pin + 1x 8-pin
Power Connectors
1x 16-pin
Graphics Processor
GK110
GPU Name
AD102
GK110-885-KA-A1
GPU Variant
AD102-???-A1
Kepler
Architecture
Ada Lovelace
TSMC
Foundry
TSMC
28 nm
Process Size
4 nm
7.08 billion
Transistors
76.3 billion
561 mm²
Die Size
608 mm²
Graphics Features
12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.5
CUDA
8.9
5.1
Shader Model
6.6
