AMD Radeon RX 6600M vs NVIDIA GeForce GT 640M Mac Edition

VS

AMD Radeon RX 6600M NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 6600M and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6600M 's Advantages

Released 8 years and 3 months late

Boost Clock2416MHz

Larger VRAM bandwidth (224.0GB/s vs 40.00GB/s)

1408 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 6600M +1413%

8.659 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

Radeon RX 6600M

VS

GeForce GT 640M Mac Edition

Graphics Card

May 2021

Release Date

Feb 2013

Mobility Radeon

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

2068 MHz

Base Clock

-

2416 MHz

Boost Clock

-

1750 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

64bit

224.0GB/s

Bandwidth

40.00GB/s

Render Config

-

SM Count

-

28

Compute Units

-

1792

Shading Units

384

112

TMUs

32

64

ROPs

8

-

Tensor Cores

-

28

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

128 KB

Theoretical Performance

154.6 GPixel/s

Pixel Rate

5.960 GPixel/s

270.6 GTexel/s

Texture Rate

23.84 GTexel/s

17.32 TFLOPS

FP16 (half)

-

8.659 TFLOPS

FP32 (float)

572.2 GFLOPS

541.2 GFLOPS

FP64 (double)

23.84 GFLOPS

Graphics Processor

Navi 23

GPU Name

GK107

-

GPU Variant

N13P-GS

RDNA 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

1.27 billion

237 mm²

Die Size

118 mm²

Board Design

100W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.3

Vulkan

1.1

-

CUDA

3.0

6.5

Shader Model

5.1

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