AMD Radeon RX 6600M vs AMD Radeon R7 M340

VS

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M and 1024MB VRAM Radeon R7 M340 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Released 5 years and 5 months late

Boost Clock has increased by 238% (2416MHz vs 715MHz)

More VRAM (8GB vs 1GB)

Larger VRAM bandwidth (224.0GB/s vs 16.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6600M +1477%

8.659 TFLOPS

Radeon R7 M340

0.549 TFLOPS

Radeon RX 6600M

VS

Radeon R7 M340

Graphics Card

May 2021

Release Date

Dec 2015

Mobility Radeon

Generation

Gem System

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

2068 MHz

Base Clock

620 MHz

2416 MHz

Boost Clock

715 MHz

1750 MHz

Memory Clock

1000 MHz

Memory

8GB

Memory Size

1024MB

GDDR6

Memory Type

DDR3

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

16.00GB/s

Render Config

-

SM Count

-

28

Compute Units

6

1792

Shading Units

384

112

TMUs

24

64

ROPs

8

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

5.720 GPixel/s

270.6 GTexel/s

Texture Rate

17.16 GTexel/s

17.32 TFLOPS

FP16 (half)

-

8.659 TFLOPS

FP32 (float)

549.1 GFLOPS

541.2 GFLOPS

FP64 (double)

34.32 GFLOPS

Graphics Processor

Navi 23

GPU Name

Opal

-

GPU Variant

Opal PRO

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

0.95 billion

237 mm²

Die Size

77 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

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

-

CUDA

-

6.5

Shader Model

6.5 (5.1)

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