Comparison. Price and Spec

#15

Looking at 3 laptops but unsure of which has better specs.

Is there a significant difference between any of these three?

Acer Aspire 5741 Core i3 Laptop:
* Screen size - 15.6 in - 1366 x 768
* Processor - Intel Core i3 - 2.26 GHz
* RAM - 3 GB
* Hard Drive - 320 GB
* Operating System - Microsoft Windows 7 Home Premium (64-bit)
* Optical Drive - DVD Super Multi
* Graphics - Intel HD
* Webcam - Integrated
* Warranty - 1 year warranty

ASUS K51AE SX040V

Built-in Devices Wireless LAN aerial
Processor AMD Athlon II M520 / 2.3 GHz ( Dual-Core )
RAM 3 GB DDR2 SDRAM - 800 MHz ( 1 x 1 GB + 1 x 2 GB )
Hard Drive 320 GB - Serial ATA-150 - 5400 rpm
Optical Storage DVD±RW (±R DL) / DVD-RAM
Display 15.6" TFT 1366 x 768 ( WXGA ) - Color Shine
Graphics Controller ATI Mobility Radeon HD 4200
Operating System Microsoft Windows 7 Home Premium 64-bit Edition
Manufacturer Warranty 2 years warranty


Medion Akoya
# AMD Athlon™ X2 P320 Processor (2.10GHz)
# ATI PowerXpress™ technology
# ATI Mobility Radeon™ HD 5470 DirectX® 11 graphics processor with 512 MB memory and digital HDMI audio/video output and ATI Radeon™ HD graphics processor
# Now with fast and energy-efficient technology 3GB DDR3 SDRAM
# Large 320GB S-ATA high-performance hard drive with lightning-fast access to data and applications
# Fantastic sounds – high-definition audio with 2 speakers Dolby® Advanced Audio certified1
# Latest wireless LAN 802.11n-standard technology with up to 300Mbit/s, IEEE 802.11b/g compatible2
# 8x multi-standard DVD/CD burner with DVD-RAM and Dual Layer support3
Comprehensive software package with original Windows® 7 Home Premium (32 Bit) (OEM versions)


The Acer is 600 on laptopsdirect.ie, the Asus is 562 on elara.ie, and the Medion is 580 in Aldi.

I'd appreciate any advice or comments.