I’ve often said that I prefer matte LCDs on laptops. This stems mostly from my experience using laptops outdoors – I often use them outdoors (e.g. in the car or at the park). Reflections outdoors can be a big issue, so matte LCDs are the best option for me. If you use your laptop mostly indoors, or at least in the shade, a glossy LCD will improve contrast by about 20-35%. This means that a high-contrast LCD might go from 800:1 to 1000:1. On the other hand, if you compare a cheap anti-glare LCD to a glossy LCD, you might go from 250:1 to 185:1… or even lower. The standard anti-glare 1366×768 display on the 5310m falls into the “lower” category, offering the lowest contrast we’ve seen in more than four years. Ouch! Aside from the anti-glare coating, there’s really nothing to like about this LCD. It’s fairly bright, but the black levels are among the highest (i.e. the worst) we’ve ever measured, resulting in a contrast ratio of just 141:1. Gamut is also at the bottom of our chart, with Delta E being one of the highest (i.e., worst) scores.
Despite the rather small 41Wh 4-cell battery, the 5310m does have decent battery life. It’s on par with most CULV offerings, most of which have batteries that are 50% larger. We expect the SU2300 version of the 5310m to be comparable to similar laptops, especially with the upgrade to a 6-cell
HP ProBook 5310m Battery
pack. But in doing so, you’ll give up the app performance shown on the previous page.
We also added an interesting metric to this round of battery life testing: idle and Internet battery life under standard laptop settings (i.e., without uninstalling all the overkill software). The biggest culprit here is the Internet Security Suite; HP provides a trial version of McAfee Internet Security. The orange bar shows what happens to performance if McAfee is left installed, and it also helps illustrate why removing unneeded apps can significantly improve mobility and performance. Of course, if you run without any protection, you do so at your own risk; it’s something I’ve done effortlessly for the past 10 years or so, but I’m not a good representative of the typical computer user.
First, let’s talk about the “clean” battery life comparison. The 5310m lasted a little over 5.5 hours, less than the 6.5 hours HP claims. We calibrated the brightness to 100nits (36% brightness under Windows) and ran it in power saving mode, and still couldn’t break 6 hours. Battery life drops significantly under more realistic loads such as Internet surfing; we measured just under 4 hours in our Flash-intensive Internet test. HD x264/H.264 playback was our worst case scenario, with battery life dropping to just over 2.5 hours. With the larger 6-cell battery, you can improve these results by 50% – as expected from CULV (i.e. slightly lower results due to the higher-performing CPU).
With McAfee Internet Security enabled, battery life dropped significantly, at least in our light-use (idle) test. With McAfee installed, the 5310m’s
HP ProBook Battery
life dropped from over 5.5 hours to less than 4 hours—a 35% drop! Internet
HP ProBook 5310m Battery
life, on the other hand, dropped only 7%, suggesting that McAfee and Internet browsing in general put enough load on the CPU to keep it from using deep sleep states. We don’t have results from the various Internet Security suites yet, but we’ll focus on testing future laptops with standard security features enabled to see how they affectHP ProBook 5310m Battery life.
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