Lenovo's All-in-one: IdeaCentre A600

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Before we delve further into the acoustics, let's test this PC for performance and value.

TEST METHODOLOGY

Measurement and Analysis Tools

Benchmarking Particulars

  • Eset NOD32: in-depth virus scan of a folder containing 32 files of varying size with of them being file archives.
  • WinRAR: archive creation with a folder containing 68 files of varing size (less than 50MB).
  • iTunes: conversion of a MP3 file to AAC
  • TMPGEnc Xpress: encoding an XVID AVI file to VC-1 (1280x720, 30fps, 20mbps)

The following features/services were disabled during testing to prevent spikes in CPU/HDD usage that are typical of fresh Vista installations:

  • Windows Sidebar
  • Indexing
  • Superfetch

Our main test procedure is designed to determine the overall system power consumption at various states (measured using a Seasonic Power Angel), and to test the integrated graphics' proficiency at playing high definition video. Standard HD-DVD and Blu Ray discs can be encoded in three different codecs: MPEG-2, H.264 / AVC and VC-1. MPEG-2 has been around for years and is not demanding on modern system resources. H.264 and VC-1 encoded videos, on the other hand, are extremely stressful due to the complexity of their compression schemes and will not play smoothly (or at all) on slower PCs, especially those with antiquated video subsystems.

We used a variety of H.264/VC-1 clips encoded for playback on the PC. The clips were played with Windows Media Player (for lack of other 64-bit players) and a CPU usage graph was created by the Windows Task Manger for analysis to determine the approximate mean and peak CPU usage. High CPU usage is indicative of poor video decoding ability on the part of the integrated graphics subsystem. If the video (and / or audio) skips or freezes, we conclude the board's IGP (in conjunction with the processor) is inadequate to decompress the clip properly.

Video Test Suite


1080p | 24fps | ~10mbps
H.264: Rush Hour 3 Trailer 1 is encoded in H.264 with Apple Quicktime. The Quicktime Alternative 1.81 codec was used to make it playable in PowerDVD.


1080p | 24fps | ~7.5mbps
WMV3: Coral Reef Adventure trailer is encoded in VC-1 using the WMV3 codec (commonly recognized by the moniker, "HD WMV").


720p | 60fps | ~12mbps
Dark Knight: Dark Knight Trailer 3 is a 720p clip encoded in H.264 inside an Apple Quicktime container.


1920x1080 | 24fps | ~19mbps
VC-1: Drag Race is a recording of a scene from network television re-encoded with TMPGEnc using the WVC1 codec.



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