NVIDIA Tesla K20X vs NVIDIA Tesla K20s

VS

We compared two Professional market GPUs: 6GB VRAM Tesla K20X and 5GB VRAM Tesla K20s 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 5GB)

Larger VRAM bandwidth (249.6GB/s vs 208.0GB/s)

192 additional rendering cores

NVIDIA Tesla K20s 's Advantages

Lower TDP (225W vs 235W)

Score

Benchmark

FP32 (float)

Tesla K20X +37%

3.935 TFLOPS

Tesla K20s

2.87 TFLOPS

Tesla K20X

VS

Tesla K20s

Graphics Card

Nov 2012

Release Date

Feb 2013

Tesla

Generation

Tesla

Professional

Type

Professional

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1300 MHz

Memory Clock

1300 MHz

Memory

6GB

Memory Size

5GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

320bit

249.6GB/s

Bandwidth

208.0GB/s

Render Config

-

SM Count

-

Compute Units

-

2688

Shading Units

2496

224

TMUs

208

48

ROPs

40

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

1536 KB

L2 Cache

1280 KB

Theoretical Performance

40.99 GPixel/s

Pixel Rate

29.90 GPixel/s

164.0 GTexel/s

Texture Rate

119.6 GTexel/s

-

FP16 (half)

-

3.935 TFLOPS

FP32 (float)

2.870 TFLOPS

1312 GFLOPS

FP64 (double)

956.8 GFLOPS

Graphics Processor

GK110

GPU Name

GK110

-

GPU Variant

-

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

7.08 billion

Transistors

7.08 billion

561 mm²

Die Size

561 mm²

Board Design

235W

TDP

225W

550 W

Suggested PSU

550 W

No outputs

Outputs

No outputs

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.5

CUDA

3.5

5.1

Shader Model

5.1

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