AMD Radeon RX 6600M vs AMD Radeon RX 6800M

VS

AMD Radeon RX 6600M

AMD Radeon RX 6800M

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M 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 6600M 's Advantages

Boost Clock has increased by 1% (2416MHz vs 2390MHz)

Lower TDP (100W vs 145W)

AMD Radeon RX 6800M 's Advantages

More VRAM (12GB vs 8GB)

Larger VRAM bandwidth (384.0GB/s vs 224.0GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600M

8.659 TFLOPS

Radeon RX 6800M +41%

12.24 TFLOPS

3DMark Time Spy

Radeon RX 6600M

7998

Radeon RX 6800M +40%

11245

Blender

Radeon RX 6600M

1007

Radeon RX 6800M +55%

1568

Shadow of the Tomb Raider 2160p

Radeon RX 6600M

31

Radeon RX 6800M +41%

44

Shadow of the Tomb Raider 1440p

Radeon RX 6600M

66

Radeon RX 6800M +18%

78

Shadow of the Tomb Raider 1080p

Radeon RX 6600M +3%

112

Radeon RX 6800M

108

GTA 5 2160p

Radeon RX 6600M

58

Radeon RX 6800M +44%

84

GTA 5 1440p

Radeon RX 6600M

62

Radeon RX 6800M +35%

84

GTA 5 1080p

Radeon RX 6600M +5%

148

Radeon RX 6800M

140

Radeon RX 6600M

VS

Radeon RX 6800M

Graphics Card

May 2021

Release Date

May 2021

Mobility Radeon

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 4.0 x16

Clock Speeds

2068 MHz

Base Clock

2116 MHz

2416 MHz

Boost Clock

2390 MHz

1750 MHz

Memory Clock

2000 MHz

Memory

8GB

Memory Size

12GB

GDDR6

Memory Type

GDDR6

128bit

Memory Bus

192bit

224.0GB/s

Bandwidth

384.0GB/s

Render Config

28

Compute Units

40

-

1792

Shading Units

2560

112

TMUs

160

64

ROPs

64

-

28

RT Cores

40

128 KB per Array

L1 Cache

128 KB per Array

2 MB

L2 Cache

3 MB

32 MB

L3 Cache

96 MB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

153.0 GPixel/s

270.6 GTexel/s

Texture Rate

382.4 GTexel/s

17.32 TFLOPS

FP16 (half)

24.47 TFLOPS

8.659 TFLOPS

FP32 (float)

12.24 TFLOPS

541.2 GFLOPS

FP64 (double)

764.8 GFLOPS

Board Design

100W

TDP

145W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Navi 23

GPU Name

Navi 22

-

GPU Variant

Navi 22 XTM

RDNA 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

7 nm

11.06 billion

Transistors

17.2 billion

237 mm²

Die Size

335 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.3

-

6.5

Shader Model

6.5

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