AMD Radeon RX 640 Mobile vs ATI Mobility Radeon HD 4670 Mac Edition

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AMD Radeon RX 640 Mobile ATI Mobility Radeon HD 4670 Mac Edition

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 256MB VRAM Mobility Radeon HD 4670 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Released 9 years and 8 months late

Boost Clock1218MHz

Larger VRAM bandwidth (48.00GB/s vs 25.28GB/s)

320 additional rendering cores

ATI Mobility Radeon HD 4670 Mac Edition 's Advantages

Lower TDP (35W vs 50W)

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +258%

1.559 TFLOPS

Mobility Radeon HD 4670 Mac Edition

0.435 TFLOPS

Radeon RX 640 Mobile

VS

Mobility Radeon HD 4670 Mac Edition

Graphics Card

May 2019

Release Date

Sep 2009

Mobility Radeon

Generation

M9x

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-A (3.0)

Clock Speeds

1082 MHz

Base Clock

-

1218 MHz

Boost Clock

-

1500 MHz

Memory Clock

790 MHz

Memory

2GB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

25.28GB/s

Render Config

-

SM Count

-

10

Compute Units

4

640

Shading Units

320

40

TMUs

32

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

5.440 GPixel/s

48.72 GTexel/s

Texture Rate

21.76 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

435.2 GFLOPS

97.44 GFLOPS

FP64 (double)

-

Graphics Processor

Polaris 23

GPU Name

M96

Polaris 23 XT

GPU Variant

M96 XT (216-0729051)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

2.2 billion

Transistors

0.514 billion

103 mm²

Die Size

146 mm²

Board Design

50W

TDP

35W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

4.1

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