NVIDIA Tesla K20c vs NVIDIA Tesla S1075

VS

NVIDIA Tesla K20c

NVIDIA Tesla S1075

We compared two Professional market GPUs: 5GB VRAM Tesla K20c and 4GB VRAM Tesla S1075 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Tesla K20c 's Advantages

Released 4 years and 5 months late

More VRAM (5GB vs 4GB)

Larger VRAM bandwidth (208.0GB/s vs 102.4GB/s)

2256 additional rendering cores

Lower TDP (225W vs 800W)

Score

Benchmark

FP32 (float)

Tesla K20c +466%

3.524 TFLOPS

Tesla S1075

0.622 TFLOPS

Tesla K20c

VS

Tesla S1075

Graphics Card

Nov 2012

Release Date

Jun 2008

Tesla

Generation

Tesla

Professional

Type

Professional

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1300 MHz

Memory Clock

800 MHz

Memory

5GB

Memory Size

4GB

GDDR5

Memory Type

GDDR3

320bit

Memory Bus

512bit

208.0GB/s

Bandwidth

102.4GB/s

Render Config

-

SM Count

30

2496

Shading Units

240

208

TMUs

80

40

ROPs

32

-

16 KB (per SMX)

L1 Cache

-

1280 KB

L2 Cache

256 KB

-

Theoretical Performance

36.71 GPixel/s

Pixel Rate

19.52 GPixel/s

146.8 GTexel/s

Texture Rate

48.80 GTexel/s

-

3.524 TFLOPS

FP32 (float)

622.1 GFLOPS

1175 GFLOPS

FP64 (double)

77.76 GFLOPS

Board Design

225W

TDP

800W

550 W

Suggested PSU

1200 W

No outputs

Outputs

No outputs

1x 6-pin + 1x 8-pin

Power Connectors

-

Graphics Processor

GK110

GPU Name

GT200B

GK110-885-KA-A1

GPU Variant

-

Kepler

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

7.08 billion

Transistors

1.4 billion

561 mm²

Die Size

470 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.5

CUDA

1.3

5.1

Shader Model

4.0

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