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NVIDIA Quadro K4000

vs

NVIDIA Quadro P620

GPU Comparison Result

Below are the results of a comparison of NVIDIA Quadro K4000 and NVIDIA Quadro P620 video cards based on key performance characteristics, as well as power consumption and much more.

Advantages

NVIDIA Quadro K4000

Larger Memory Size: 3GB (3GB vs 2GB)
Higher Bandwidth: 134.8 GB/s (134.8 GB/s vs 80.13 GB/s)
More Shading Units: 768 (768 vs 512)

NVIDIA Quadro P620

Newer Launch Date: February 2018 (March 2013 vs February 2018)

Basic

NVIDIA

Label Name

NVIDIA

March 2013

Launch Date

February 2018

Professional

Platform

Professional

Quadro K4000

Model Name

Quadro P620

Quadro

Generation

Quadro

Base Clock

1266MHz

Boost Clock

1354MHz

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

2,540 million

Transistors

3,300 million

TMUs

Texture Mapping Units (TMUs) serve as components of the GPU, which are capable of rotating, scaling, and distorting binary images, and then placing them as textures onto any plane of a given 3D model. This process is called texture mapping.

TSMC

Foundry

Samsung

28 nm

Process Size

14 nm

Kepler

Architecture

Pascal

Memory Specifications

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

192bit

Memory Bus

The memory bus width refers to the number of bits of data that the video memory can transfer within a single clock cycle. The larger the bus width, the greater the amount of data that can be transmitted instantaneously, making it one of the crucial parameters of video memory. The memory bandwidth is calculated as: Memory Bandwidth = Memory Frequency x Memory Bus Width / 8. Therefore, when the memory frequencies are similar, the memory bus width will determine the size of the memory bandwidth.

128bit

1404MHz

Memory Clock

1252MHz

134.8 GB/s

Bandwidth

Memory bandwidth refers to the data transfer rate between the graphics chip and the video memory. It is measured in bytes per second, and the formula to calculate it is: memory bandwidth = working frequency × memory bus width / 8 bits.

80.13 GB/s

Display and Media

1x DVI
2x DisplayPort 1.2

Outputs

4x mini-DisplayPort 1.4a

Theoretical Performance

12.96 GPixel/s

Pixel Rate

Pixel fill rate refers to the number of pixels a graphics processing unit (GPU) can render per second, measured in MPixels/s (million pixels per second) or GPixels/s (billion pixels per second). It is the most commonly used metric to evaluate the pixel processing performance of a graphics card.

21.66 GPixel/s

51.84 GTexel/s

Texture Rate

Texture fill rate refers to the number of texture map elements (texels) that a GPU can map to pixels in a single second.

43.33 GTexel/s

FP16 (half)

An important metric for measuring GPU performance is floating-point computing capability. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy.

21.66 GFLOPS

51.84 GFLOPS

FP64 (double)

An important metric for measuring GPU performance is floating-point computing capability. Double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy, while single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.

43.33 GFLOPS

1.219 TFLOPS

FP32 (float)

An important metric for measuring GPU performance is floating-point computing capability. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.

1.358 TFLOPS

Miscellaneous

SM Count

Multiple Streaming Processors (SPs), along with other resources, form a Streaming Multiprocessor (SM), which is also referred to as a GPU's major core. These additional resources include components such as warp schedulers, registers, and shared memory. The SM can be considered the heart of the GPU, similar to a CPU core, with registers and shared memory being scarce resources within the SM.

768

Shading Units

The most fundamental processing unit is the Streaming Processor (SP), where specific instructions and tasks are executed. GPUs perform parallel computing, which means multiple SPs work simultaneously to process tasks.

512

16 KB (per SMX)

L1 Cache

48 KB (per SM)

384KB

L2 Cache

1024KB

80W

TDP

40W

1.1

Vulkan Version

Vulkan is a cross-platform graphics and compute API by Khronos Group, offering high performance and low CPU overhead. It lets developers control the GPU directly, reduces rendering overhead, and supports multi-threading and multi-core processors.

1.3

3.0

OpenCL Version

3.0

4.6

OpenGL

4.6

3.0

CUDA

6.1

12 (11_0)

DirectX

12 (12_1)

1x 6-pin

Power Connectors

None

ROPs

The Raster Operations Pipeline (ROPs) is primarily responsible for handling lighting and reflection calculations in games, as well as managing effects like anti-aliasing (AA), high resolution, smoke, and fire. The more demanding the anti-aliasing and lighting effects in a game, the higher the performance requirements for the ROPs; otherwise, it may result in a sharp drop in frame rate.

5.1

Shader Model

6.4

250W

Suggested PSU

200W