AMD Radeon RX 6700M vs AMD Radeon RX 640 Mobile

VS

AMD Radeon RX 6700M

AMD Radeon RX 640 Mobile

We compared two Mobile platform GPUs: 10GB VRAM Radeon RX 6700M and 2GB VRAM Radeon RX 640 Mobile to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700M 's Advantages

Released 2 years late

Boost Clock has increased by 97% (2400MHz vs 1218MHz)

More VRAM (10GB vs 2GB)

Larger VRAM bandwidth (320.0GB/s vs 48.00GB/s)

1664 additional rendering cores

AMD Radeon RX 640 Mobile 's Advantages

Lower TDP (50W vs 135W)

Score

Benchmark

FP32 (float)

Radeon RX 6700M +609%

11.06 TFLOPS

Radeon RX 640 Mobile

1.559 TFLOPS

Radeon RX 6700M

VS

Radeon RX 640 Mobile

Graphics Card

May 2021

Release Date

May 2019

Mobility Radeon

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1489 MHz

Base Clock

1082 MHz

2400 MHz

Boost Clock

1218 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

10GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

160bit

Memory Bus

64bit

320.0GB/s

Bandwidth

48.00GB/s

Render Config

36

Compute Units

10

-

2304

Shading Units

640

144

TMUs

40

64

ROPs

16

-

36

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

512 KB

80 MB

L3 Cache

-

Theoretical Performance

153.6 GPixel/s

Pixel Rate

19.49 GPixel/s

345.6 GTexel/s

Texture Rate

48.72 GTexel/s

22.12 TFLOPS

FP16 (half)

1.559 TFLOPS

11.06 TFLOPS

FP32 (float)

1.559 TFLOPS

691.2 GFLOPS

FP64 (double)

97.44 GFLOPS

Board Design

135W

TDP

50W

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Processor

Navi 22

GPU Name

Polaris 23

Navi 22

GPU Variant

Polaris 23 XT

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

17.2 billion

Transistors

2.2 billion

335 mm²

Die Size

103 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

6.5

Shader Model

6.4

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