NVIDIA Tesla K20Xm vs NVIDIA L40

VS

NVIDIA Tesla K20Xm

NVIDIA L40

We compared two Professional market GPUs: 6GB VRAM Tesla K20Xm and 48GB VRAM L40 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20Xm 's Advantages

Lower TDP (235W vs 300W)

NVIDIA L40 's Advantages

Released 9 years and 11 months late

Boost Clock2490MHz

More VRAM (48GB vs 6GB)

Larger VRAM bandwidth (864.0GB/s vs 249.6GB/s)

15488 additional rendering cores

Score

Benchmark

FP32 (float)

Tesla K20Xm

3.935 TFLOPS

L40 +2200%

90.52 TFLOPS

Blender

Tesla K20Xm

372

L40 +948%

3901

Tesla K20Xm

VS

L40

Graphics Card

Nov 2012

Release Date

Oct 2022

Tesla

Generation

Tesla Ada

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

735 MHz

-

Boost Clock

2490 MHz

1300 MHz

Memory Clock

2250 MHz

Memory

6GB

Memory Size

48GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

384bit

249.6GB/s

Bandwidth

864.0GB/s

Render Config

-

SM Count

142

2688

Shading Units

18176

224

TMUs

568

48

ROPs

192

-

Tensor Cores

568

-

RT Cores

142

16 KB (per SMX)

L1 Cache

128 KB (per SM)

1536 KB

L2 Cache

96 MB

-

Theoretical Performance

40.99 GPixel/s

Pixel Rate

478.1 GPixel/s

164.0 GTexel/s

Texture Rate

1414 GTexel/s

-

FP16 (half)

90.52 TFLOPS

3.935 TFLOPS

FP32 (float)

90.52 TFLOPS

1312 GFLOPS

FP64 (double)

1414 GFLOPS

Board Design

235W

TDP

300W

550 W

Suggested PSU

700 W

No outputs

Outputs

4x DisplayPort 1.4a

-

Power Connectors

1x 16-pin

Graphics Processor

GK110

GPU Name

AD102

-

GPU Variant

AD102-895-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

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