Page 1:Is Faster Notebook Performance Worth Shorter Battery Life?
Page 2:Yonah: Pentium M Successor With Two Cores
Page 3:..., Faster Front Side Bus (FSB),
Page 4:...and Other Important Enhancements
Page 5:Dynamic Power Coordination
Page 6:Dynamic Power Coordination, Continued
Page 7:Digital Media Boost
Page 8:I've Got A Core Duo Processor LV L2400. What Have You Got?
Page 9:Models And Pricing For Core Duo And Core Solo CPUs
Page 10:Overview Of All Centrino Generations
Page 11:New Chipsets And Two Different Southbridges
Page 12:Test System Configuration Details And Comparison Systems
Page 13:Benchmarks And Settings
Page 14:Extended Benchmark Suite
Page 15:ABBYY FineReader 8
Page 16:Application Test Results
Page 17:Windows Media Encoder 9
Page 18:Results From The Multitasking Scenarios
Page 19:Office Applications: SYSmark 2004 SE
Page 20:SYSmark 2004 SE, Continued
Page 21:Battery Life: MobileMark 2005
Page 22:MobileMark 2005, Continued
Page 23:Energy Drain: Graphics Chip Or Chipset?
Page 24:Summary And Conclusions
Page 25:Summary And Conclusions, Continued
MobileMark 2005, Continued
MobileMark 2005 Battery Lifetime And Performance Measurements: Analysis And Conclusions
Most readers will look at these results and wonder if the new platform really gobbles that much juice, or if the THG crew simply goofed. However, neither is really the case; we didn't mess up, and the abysmal battery life times reported are certainly not the fault of an enormously power-hungry CPU. It's far more likely that they come from the high-performance graphics chip along with its 512 MB of dedicated video RAM. Both of these suck a lot of juice from the battery. We'll explain how we arrived at this conclusion in the final part of this section of our review. Perhaps it's the combination of the chipset and the graphics card? Maybe, but that's pure speculation. What we can prove is that the test system put at our disposal has a huge appetite for power.
The following charts clarify further how truly high the average power draw was in our test system, including its power consumption, when compared to the other two test systems in all three different MobileMark 2005 scenarios. Then too, our Centrino Duo test system consumed an average of 31 to 34 watts. This value is far too high to attribute only to the CPU, simply because it isn't even that heavily loaded when running either office productivity or DVD playback tests.
On to some good news. In terms of performance, the Core Duo system shows itself as somewhat faster than an older Centrino single core system that runs at the same core clock rate. What we can't answer is why that speed difference isn't as dramatic as in the Office Productivity tests for SYSmark 2004 SE. This question should more properly be directed at BAPco, the guardian and protector of the mix of applications and the scripts used to put them to work in these tests.
That's it for the good news. We couldn't prove that the new WLAN module is more energy efficient than the old one, but we believe that's not the case.
- Is Faster Notebook Performance Worth Shorter Battery Life?
- Yonah: Pentium M Successor With Two Cores
- ..., Faster Front Side Bus (FSB),
- ...and Other Important Enhancements
- Dynamic Power Coordination
- Dynamic Power Coordination, Continued
- Digital Media Boost
- I've Got A Core Duo Processor LV L2400. What Have You Got?
- Models And Pricing For Core Duo And Core Solo CPUs
- Overview Of All Centrino Generations
- New Chipsets And Two Different Southbridges
- Test System Configuration Details And Comparison Systems
- Benchmarks And Settings
- Extended Benchmark Suite
- ABBYY FineReader 8
- Application Test Results
- Windows Media Encoder 9
- Results From The Multitasking Scenarios
- Office Applications: SYSmark 2004 SE
- SYSmark 2004 SE, Continued
- Battery Life: MobileMark 2005
- MobileMark 2005, Continued
- Energy Drain: Graphics Chip Or Chipset?
- Summary And Conclusions
- Summary And Conclusions, Continued