Lenovo C315 Touch Screen All-in-One PC

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TEST METHODOLOGY

Various All-in-One Systems Compared:

Lenovo ThinkCentre A70Z-1165A3U:

• Intel Core 2 Duo E7500 processor - 2.93GHz, 3MB L2 cache, 1066MHz FSB, 45nm, 65W
• DDR2 memory - 1x2GB DDR2-800
• Intel G41 Express chipset - integrated GMA X4500 graphics
• Seagate Barracuda 7200.12 desktop hard drive - 320GB, 7200rpm, 16MB cache
• Microsoft Windows 7 Professional 32-bit operating system

Asus EeeTop ET2203-B0017:

• Intel Core 2 Duo T6600 mobile processor - 2.2GHz, 2MB L2 cache, 800MHz FSB, 45nm, 35W
• DDR3 memory - 2x2GB DDR2-800
• Intel PM45 Express mobile chipset
• ATI Mobility Radeon HD 4570 graphics card - 256MB
• Seagate Momentus 5400.6 notebook hard drive - 500GB, 5400rpm, 8MB cache
• Microsoft Windows 7 Home Premium 32-bit operating system

Lenovo C315-40221GU:

• AMD Athlon II X2 250u processor - 1.6GHz, 2MB L2 cache, 45nm, 25W
• DDR2 memory - 2x2GB DDR2-800
• AMD 690M chipset
• ATI Mobility Radeon HD 4530 graphics card - 512MB
• Seagate Barracuda 7200.12 desktop hard drive - 500GB, 7200rpm, 16MB cache
• Microsoft Windows 7 Home Premium 64-bit operating system

Lenovo C315: GPU-Z screenshot.

Lenovo C315: device listing.

Measurement and Analysis Tools

• CPU-Z to monitor CPU frequency and voltage.
• CPUBurn processor stress software.
• Prime95 processor stress software.
• ATITool artifact scanner to stress the integrated GPU.
• FurMark stability test to stress the integrated GPU.
• Media Player Classic - Home Cinema with CoreAVC (if necessary) to play x264/MKV video
• Cyberlink PowerDVD to play H264/VC1 video
• Mozilla Firefox and Adobe Flash Player to play Flash video
• Eset NOD32 as an anti-virus benchmark.
• WinRAR as an archiving benchmark.
• iTunes an audio encoding benchmark.
• TMPGEnc Xpress as a video encoding benchmark.
• PCMark05 as a general system benchmark.
• 3DMark05 as a general benchmark
• 3DMark06 as a general benchmark
• Seasonic Power Angel AC power meter, used to measure the power consumption of the system
  

Real-world Benchmark Test Details

• Eset NOD32: In-depth virus scan of a folder containing 32 files of varying size, several of which are archives with many files within them..
• WinRAR: Archive creation with a folder containing 68 files of varying size (less than 50MB).
• iTunes: Conversion of an MP3 file to AAC (48KHz, 256kbps).
• TMPGEnc Xpress: Encoding a 1-minute long XVID AVI file to VC-1 (1280x720, 30fps, 20mbps).

Our first test procedure is designed to determine the overall system power consumption at various states (measured using a Seasonic Power Angel). To stress CPUs we use either Prime95 (large FFTs setting) or CPUBurn depending on which produces higher system power consumption. To stress the GPU, we use ATITool or FurMark, which ever application is more power demanding.

Then we run a short series of performance benchmarks — a few real-world applications as well as synthetic tests.

All nonessential pre-installed software is removed prior to testing, and certain services and features like Superfetch and System Restore are disabled to prevent them from affecting our results. Aero glass is left enabled if supported. All tests are conducted with WiFi disabled (as well as other wireless connectivity features) unless necessary, and screen brightness is set to a reasonable level unless otherwise noted. We also make note if energy saving features like Cool'n'Quiet and SpeedStep do not function properly.

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