AMD Radeon R5 M255 vs AMD Radeon RX 6800M

VS

AMD Radeon R5 M255

AMD Radeon RX 6800M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 12GB VRAM Radeon RX 6800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800M 's Advantages

Released 6 years and 7 months late

Boost Clock has increased by 154% (2390MHz vs 940MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 32.00GB/s)

2176 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 M255

0.721 TFLOPS

Radeon RX 6800M +1597%

12.24 TFLOPS

Radeon R5 M255

VS

Radeon RX 6800M

Graphics Card

Oct 2014

Release Date

May 2021

Gem System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

925 MHz

Base Clock

2116 MHz

940 MHz

Boost Clock

2390 MHz

1000 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

12GB

DDR3

Memory Type

GDDR6

128bit

Memory Bus

192bit

32.00GB/s

Bandwidth

384.0GB/s

Render Config

6

Compute Units

40

-

384

Shading Units

2560

24

TMUs

160

8

ROPs

64

-

RT Cores

40

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

7.520 GPixel/s

Pixel Rate

153.0 GPixel/s

22.56 GTexel/s

Texture Rate

382.4 GTexel/s

721.9 GFLOPS

FP16 (half)

24.47 TFLOPS

721.9 GFLOPS

FP32 (float)

12.24 TFLOPS

45.12 GFLOPS

FP64 (double)

764.8 GFLOPS

Board Design

Unknown

TDP

145W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Topaz

GPU Name

Navi 22

Topaz PRO (216-0858030)

GPU Variant

Navi 22 XTM

GCN 3.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.55 billion

Transistors

17.2 billion

125 mm²

Die Size

335 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.2.170

Vulkan

1.3

-

6.5

Shader Model

6.5

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