Inside MSI's GT725
The MSI Web page quotes key figures such as weight using a 6-cell non-protruding batter, but includes a 9-cell high-capacity version in shipping units. Its 7,800 mAh rating should be good for 84 watt hours.
Removing the bottom cover reveals only a single hard drive bay and single cooling fan. Two heat pipes are required to cool AMD’s Radeon Mobility HD 4850 graphics module, while the mobile Core 2 Quad processor and PM45 northbridge need only one.
The M98 graphics processor used in AMD’s Radeon Mobility HD 4850 should be about as powerful as the G92 used in the GTX 280M, but the 4850 is stuck with only half the RAM. Once known for edging out G92 products at higher quality settings, Nvidia’s memory capacity increase could take away the HD 4850’s former advantage.
Intel’s Core 2 Quad Q9000 likely gets a big part of its low-voltage capability by running at only 2.0 GHz.
The PM45 chipset supports either DDR2 or DDR3 memory. While Core 2 processors generally don’t gain performance from the use of DDR3, the newer technology is supposedly more power efficient. MSI instead uses 4.0 GB DDR2-800, probably in an effort to keep system cost low.