What is a replacement for AMD LX800?

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LX800Introduction

Whilst the end of life (EOL) date for the AMD LX800 has again recently been pushed back, the time will approach when the end of life will be announced, though worryingly to embedded hardware manufacturers, few equivalent alternatives exist.

Intel would push their latest Atom range as a migration path, though whilst you’ll benefit from substantial performance increase, the OEM must also suffer a vast increase in overall power consumption. AMD’s latest offering, the G-Series, whilst an exceptional CPU with lightning graphical performance, still represents a significant increase in required power.
DX2
The reality is that more often than not the AMD LX800’s performance is ample for single usage embedded applications. When the LX800’s end of life does arrive, a large gap will be left in the hardware market, for OEMs wishing to continue benefiting from the advantages of x86 products.

Plugging that gap, the new VDX2 CPU from DMP/ICOP Technology addresses this issue.

With a scalable core, at 800MHz (maximum 1GHz) the VDX2 outperforms the LX800 in every area whilst keeping the power footprint to a minimum. The VDX2 actually integrates 5 additional functions into the CPU, so whilst the CPU isn’t directly comparable, the focusing purely on the vCore TDP for comparative purposes – the LX800’s is 3.6W to the VDX2’s 3.45W.

Actually, as the VDX2 is a true System-On-Chip, even integrating graphics and Ethernet, the power savings are even more substantial, due to the negation of external components to satisfy both functions.

The below benchmarks demonstrate the VDX2’s prowess – though don’t take our word for it, DSL are happy to provide evaluation kits for any LX800 migration candidates to test themselves!

CPUmark 99 version 1.0 32bit

 Ranking

1 2 3 4  5

 CPU

VDX2
CPU: 1GHz
RAM: 400MHz

 VDX2
CPU: 1GHz
RAM: 300MHz
 VDX2
CPU: 800MHz
RAM: 300MHz
LX800
CPU: 500MHz
RAM: 333MHz

VDX1
CPU: 800MHz
RAM: 300MHz

 Score  60.8 47.8 40.7 39.1

24.5

CrystalMark 2004R3

 

VDX2 800MHz

LX800

Overall

696

579

ALU

1444

1014

Fibonacci

506

263

Napierian

271

207

Eratosthenes

219

223

Quicksort

426

299

FPU

702

751

MikoFPU

43

78

RandMeanSS

425

398

FFT

169

188

Mandelbrot

43

65

MEM

815

794

Read

239

146

Write

295

435

Read/Write

188

121

Cache

715

700