NVIDIA Tesla K20X vs NVIDIA RTX A4 Mobile

VS

We compared two Professional market GPUs: 6GB VRAM Tesla K20X and 4GB VRAM RTX A4 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20X 's Advantages

More VRAM (6GB vs 4GB)

Larger VRAM bandwidth (249.6GB/s vs 224.0GB/s)

640 additional rendering cores

NVIDIA RTX A4 Mobile 's Advantages

Released 8 years and 5 months late

Boost Clock1770MHz

Score

Benchmark

FP32 (float)

Tesla K20X

3.935 TFLOPS

RTX A4 Mobile +84%

7.25 TFLOPS

Tesla K20X

VS

RTX A4 Mobile

Graphics Card

Nov 2012

Release Date

Apr 2021

Tesla

Generation

Quadro Ampere-M

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1297 MHz

-

Boost Clock

1770 MHz

1300 MHz

Memory Clock

1750 MHz

Memory

6GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

128bit

249.6GB/s

Bandwidth

224.0GB/s

Render Config

-

SM Count

16

-

Compute Units

-

2688

Shading Units

2048

224

TMUs

64

48

ROPs

32

-

Tensor Cores

64

-

RT Cores

16

16 KB (per SMX)

L1 Cache

128 KB (per SM)

1536 KB

L2 Cache

2 MB

Theoretical Performance

40.99 GPixel/s

Pixel Rate

56.64 GPixel/s

164.0 GTexel/s

Texture Rate

113.3 GTexel/s

-

FP16 (half)

7.250 TFLOPS

3.935 TFLOPS

FP32 (float)

7.250 TFLOPS

1312 GFLOPS

FP64 (double)

113.3 GFLOPS

Graphics Processor

GK110

GPU Name

GA107

-

GPU Variant

-

Kepler

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

7.08 billion

Transistors

8.7 billion

561 mm²

Die Size

200 mm²

Board Design

235W

TDP

Unknown

550 W

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

1x 6-pin + 1x 8-pin

Power Connectors

None

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

8.6

5.1

Shader Model

6.7

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