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The Stamina mode promises a long battery life time due to the use of the integrated graphics core. Let’s check it out with Battery Eater Pro 2.60.

The test was performed at the maximum screen brightness in the following modes:

  • Classic (the system bears the maximum and evenly distributed load)
  • Reader’s test (the pages are scrolled through each 15 seconds)
  • DVD mode (the DVD movie was launched in Battery Eater’s Idle test mode)

The Sony VAIO VGN-SZ1XRP/C has a more powerful configuration and thus requires more juice to run. But it’s only in the Reader’s mode that there is a noticeable difference. The results of both notebooks are quite impressive considering their rather advanced configurations. About three hours of autonomous work under a high load is good (but we’d like to have even more, of course).

Here are the battery discharge diagrams for the different operation modes:

Sony VAIO VGN-SZ1HRP/B

Sony VAIO VGN-SZ1XRP/C

And now we switch to the maximum-performance Speed mode in which the VAIO VGN-SZ1HRP/B and the VAIO VGN-SZ1XRP/C use their discrete Nvidia GeForce Go 7400 graphics processors.

 
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