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AMD Radeon RX 6600 XT vs AMD Radeon RX 7800 XT

AMD Radeon RX 6600 XT

AMD Radeon RX 7800 XT

GPU Comparison Result

Below are the results of a comparison of AMD Radeon RX 6600 XT and AMD Radeon RX 7800 XT video cards based on key performance characteristics, as well as power consumption and much more.

Advantages

AMD Radeon RX 6600 XT

Higher Boost Clock: 2589MHz (2589MHz vs 2430MHz)

AMD Radeon RX 7800 XT

Larger Memory Size: 16GB (8GB vs 16GB)
Higher Bandwidth: 624.1 GB/s (256.0 GB/s vs 624.1 GB/s)
More Shading Units: 3840 (2048 vs 3840)
Newer Launch Date: August 2023 (July 2021 vs August 2023)

Basic

AMD

Label Name

AMD

July 2021

Launch Date

August 2023

Desktop

Platform

Desktop

Radeon RX 6600 XT

Model Name

Radeon RX 7800 XT

Navi II

Generation

Navi III

1968MHz

Base Clock

1295MHz

2589MHz

Boost Clock

2430MHz

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

11,060 million

Transistors

28,100 million

RT Cores

Compute Units

128

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.

240

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

RDNA 2.0

Architecture

RDNA 3.0

Memory Specifications

8GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

128bit

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.

256bit

2000MHz

Memory Clock

2438MHz

256.0 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.

624.1 GB/s

Theoretical Performance

165.7 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.

233.3 GPixel/s

331.4 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.

583.2 GTexel/s

21.21 TFLOPS

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.

74.65 TFLOPS

662.8 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.

1166 GFLOPS

10.812 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.

36.574 TFLOPS

Miscellaneous

2048

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.

3840

128 KB per Array

L1 Cache

128 KB per Array

2MB

L2 Cache

4MB

160W

TDP

263W

1.3

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

2.1

OpenCL Version

2.2

4.6

OpenGL

4.6

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

1x 8-pin

Power Connectors

2x 8-pin

6.7

Shader Model

6.7

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.

450W

Suggested PSU

700W