AMD Radeon HD 8790M vs AMD Radeon RX 6600S

VS

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8790M and 4GB VRAM Radeon RX 6600S 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 9 months late

Boost Clock has increased by 122% (2000MHz vs 900MHz)

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (224.0GB/s vs 64.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8790M

0.691 TFLOPS

Radeon RX 6600S +937%

7.168 TFLOPS

Radeon HD 8790M

VS

Radeon RX 6600S

Graphics Card

Apr 2013

Release Date

Jan 2022

Solar System

Generation

Mobility Radeon

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 4.0 x8

Clock Speeds

850 MHz

Base Clock

1700 MHz

900 MHz

Boost Clock

2000 MHz

1000 MHz

Memory Clock

1750 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

128bit

64.00GB/s

Bandwidth

224.0GB/s

Render Config

-

SM Count

-

6

Compute Units

28

384

Shading Units

1792

24

TMUs

112

8

ROPs

64

-

Tensor Cores

-

RT Cores

28

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

2 MB

Theoretical Performance

7.200 GPixel/s

Pixel Rate

128.0 GPixel/s

21.60 GTexel/s

Texture Rate

224.0 GTexel/s

-

FP16 (half)

14.34 TFLOPS

691.2 GFLOPS

FP32 (float)

7.168 TFLOPS

43.20 GFLOPS

FP64 (double)

448.0 GFLOPS

Graphics Processor

Mars

GPU Name

Navi 23

Mars M2 XTX (216-0842036)

GPU Variant

-

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

0.95 billion

Transistors

11.06 billion

77 mm²

Die Size

237 mm²

Board Design

Unknown

TDP

80W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.3

-

CUDA

-

6.5 (5.1)

Shader Model

6.5

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