NVIDIA Quadro K420 vs NVIDIA Quadro K620

VS

We compared two Professional market GPUs: 1024MB VRAM Quadro K420 and 2GB VRAM Quadro K620 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA Quadro K420 's Advantages

Lower TDP (41W vs 45W)

NVIDIA Quadro K620 's Advantages

Boost Clock1124MHz

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (28.80GB/s vs 28.51GB/s)

192 additional rendering cores

Score

Benchmark

FP32 (float)

Quadro K420

0.336 TFLOPS

Quadro K620 +156%

0.863 TFLOPS

Quadro K420

VS

Quadro K620

Graphics Card

Jul 2014

Release Date

Jul 2014

Quadro

Generation

Quadro

Professional

Type

Professional

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

1058 MHz

-

Boost Clock

1124 MHz

891 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

2GB

DDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

28.51GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

Compute Units

-

192

Shading Units

384

16

TMUs

24

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

2 MB

Theoretical Performance

3.504 GPixel/s

Pixel Rate

17.98 GPixel/s

14.02 GTexel/s

Texture Rate

26.98 GTexel/s

-

FP16 (half)

-

336.4 GFLOPS

FP32 (float)

863.2 GFLOPS

14.02 GFLOPS

FP64 (double)

26.98 GFLOPS

Graphics Processor

GK107

GPU Name

GM107

GK107-301-A2

GPU Variant

GM107-850-A2

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

1.87 billion

118 mm²

Die Size

148 mm²

Board Design

41W

TDP

45W

200 W

Suggested PSU

200 W

1x DVI 1x DisplayPort 1.2

Outputs

1x DVI 1x DisplayPort 1.4a

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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