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AMD Radeon RX 6850M XT vs AMD Radeon RX 7900 GRE

AMD Radeon RX 6850M XT

AMD Radeon RX 7900 GRE

GPU Comparison Result

Below are the results of a comparison of AMD Radeon RX 6850M XT and AMD Radeon RX 7900 GRE video cards based on key performance characteristics, as well as power consumption and much more.

Advantages

AMD Radeon RX 6850M XT

Higher Boost Clock: 2581MHz (2581MHz vs 2245MHz)

AMD Radeon RX 7900 GRE

Larger Memory Size: 16GB (12GB vs 16GB)
Higher Bandwidth: 576.0 GB/s (384.0 GB/s vs 576.0 GB/s)
More Shading Units: 5120 (2560 vs 5120)
Newer Launch Date: July 2023 (January 2022 vs July 2023)

Basic

AMD

Label Name

AMD

January 2022

Launch Date

July 2023

Mobile

Platform

Desktop

Radeon RX 6850M XT

Model Name

Radeon RX 7900 GRE

Mobility Radeon

Generation

Navi III

2321MHz

Base Clock

1287MHz

2581MHz

Boost Clock

2245MHz

PCIe 4.0 x16

Bus Interface

PCIe 4.0 x16

17,200 million

Transistors

57,700 million

RT Cores

Compute Units

160

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.

320

TSMC

Foundry

TSMC

7 nm

Process Size

5 nm

RDNA 2.0

Architecture

RDNA 3.0

Memory Specifications

12GB

Memory Size

16GB

GDDR6

Memory Type

GDDR6

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.

256bit

2000MHz

Memory Clock

2250MHz

384.0 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.

576.0 GB/s

Theoretical Performance

165.2 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.

431.0 GPixel/s

413.0 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.

718.4 GTexel/s

26.43 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.

91.96 TFLOPS

825.9 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.

1437 GFLOPS

12.946 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.

46.9 TFLOPS

Miscellaneous

2560

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.

5120

128 KB per Array

L1 Cache

256 KB per Array

3MB

L2 Cache

6MB

165W

TDP

260W

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)

None

Power Connectors

2x 8-pin

6.5

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.

192

Suggested PSU

600W