AMD Radeon RX 6600S vs AMD Radeon HD 8670M

VS

AMD Radeon RX 6600S

AMD Radeon HD 8670M

We compared two Mobile platform GPUs: 4GB VRAM Radeon RX 6600S and 1024MB VRAM Radeon HD 8670M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600S 's Advantages

Released 8 years and 10 months late

Boost Clock has increased by 105% (2000MHz vs 975MHz)

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (224.0GB/s vs 14.40GB/s)

1472 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600S +1048%

7.168 TFLOPS

Radeon HD 8670M

0.624 TFLOPS

Radeon RX 6600S

VS

Radeon HD 8670M

Graphics Card

Jan 2022

Release Date

Mar 2013

Mobility Radeon

Generation

Solar System

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1700 MHz

Base Clock

925 MHz

2000 MHz

Boost Clock

975 MHz

1750 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

1024MB

GDDR6

Memory Type

DDR3

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

14.40GB/s

Render Config

28

Compute Units

5

-

1792

Shading Units

320

112

TMUs

20

64

ROPs

8

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

128 KB

32 MB

L3 Cache

-

Theoretical Performance

128.0 GPixel/s

Pixel Rate

7.800 GPixel/s

224.0 GTexel/s

Texture Rate

19.50 GTexel/s

14.34 TFLOPS

FP16 (half)

-

7.168 TFLOPS

FP32 (float)

624.0 GFLOPS

448.0 GFLOPS

FP64 (double)

39.00 GFLOPS

Board Design

80W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Navi 23

GPU Name

Sun

-

GPU Variant

Sun S3 XT (216-0841009)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

0.69 billion

237 mm²

Die Size

56 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.3

Vulkan

1.2.170

-

6.5

Shader Model

6.5 (5.1)

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