Apple's 15-inch Core i5 MacBook Pro: The One to Get?
by Anand Lal Shimpi on April 14, 2010 10:38 PM EST- Posted in
- Mac
- MacBook Pro
- Arrandale
- Core i5
- Laptops
Even Better Battery Life
I've never had such a great balance of performance and battery life as my previous generation unibody MacBook Pro. Whatever Apple is doing under OS X to deliver great idle battery life really does pay off. If you're not constantly pegging the CPU, OS X can deliver some incredible battery life.
It does get better with Arrandale. Remember with the Core 2 processors you couldn't actually shut off the cores if they were idle, they'd still leak power. Thanks to Arrandale's power gating, if a core is idle, it can effectively be shut off completely. In other words, battery life in situations where there's lots of idle time (e.g. read web pages, writing) should improve.
To test this theory I ran our standard wireless web browsing test:
Light Web Browsing
Here we're simply listing to MP3s in iTunes on repeat while browsing through a series of webpages with no flash on them. Each page forwards on to the next in the series after 20 seconds.
The display is kept at 50% brightness, all screen savers are disabled, but the hard drive is allowed to go to sleep if there's no disk activity. The wireless connection is enabled and connected to a local access point less than 20 feet away. This test represents the longest battery life you can achieve on the platform while doing minimal work. The results here are comparable to what you'd see typing a document in TextEdit or reading documents.
As expected, the new MacBook Pro delivers a 10.5% increase in battery life. Not all of this is due to the more efficient CPU/GPU however. The 15-inch MacBook Pro has a larger battery than before (77.5Whr vs. 73Whr).
It's not all rosy though. The larger battery was used in part to make up for the fact that Arrandale, while more efficient at idle, can draw more power under load than Penryn. The Core i5 can be noticeably faster than last year's Core 2 Duo, but in allowing you to do more it can run the battery down quicker.
In our original Arrandale review we found that battery life can actually decrease with the new platform under certain conditions. Our heavy multitasking test shows the same can happen under OS X:
Multitasking Battery Life
Our final battery life test is the worst case scenario. In this test we have three open Safari windows, each browsing a set of web pages with between 1 - 4 flash ads per page, at the same time. We're also playing an XviD video in a window all while downloading files from a server at approximately 500KB/s.
It's not a large drop, only a couple of percent, not even noticeable. But you shouldn't expect battery life improvements across the board with the new MacBook Pro.
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michal1980 - Thursday, April 15, 2010 - link
thats what this place feels like now. I geuss the website redesign was timed to that reflect change.Cardio - Thursday, April 15, 2010 - link
Apples guarantees "Up To" 1,000 battery recharges is complete idiot speek. 7 recharges would comply with that guarantee. That is just the same as saying "not more than". Apple you always double-talk or just outright lie.solipsism - Thursday, April 15, 2010 - link
Wow! What an asshat comment. Apple and Sony are the only two PC vendors that I know of that report accurate battery specs."The built-in battery in the new 13-, 15-, and 17-inch MacBook Pro is designed to retain up to 80% of its original capacity at up to 1000 full charge and discharge cycles."
• http://www.apple.com/batteries/notebooks.html
I just returned a 2.5 year old battery to Apple a couple months ago because it wasn't holding a charge and only a few hundred cycles on it. It wasn't under any warranty and they gave me a new one right then and there for free.
omgrtm - Thursday, April 15, 2010 - link
Also, as a company you have to show proof (based on statistical analysis) for all your advertising claims. Not entirely sure about numbers, but something like 9 in 10 at least should meet the stated (would be 1000 recharges in this case), for you to be able to use 'up to'. You'd be incredibly unlucky to get 7 in reality.sebmel - Thursday, April 15, 2010 - link
Apple changed my last battery, too... 2.5 years old... it got the Sony problem... swelled up.The internal regulations appeared to be change if less than 300 cycles.
Mine was 320 or so and they changed it anyway.
Apple seem pretty good at offering a new battery that fails to meet their advertised expectation so I'm guessing they are going to honour these ones up to 1000 cycles.
sebmel - Thursday, April 15, 2010 - link
Error, apologies:Apple seem pretty good at offering a new battery WHEN ONE fails to meet their advertised expectation so I'm guessing they are going to honour these ones up to 1000 cycles.
tynopik - Thursday, April 15, 2010 - link
"Less than 20 fps under World of Warcraft at 800 x 600"Actually, it's 52.3
Anand Lal Shimpi - Thursday, April 15, 2010 - link
haha, wow, fixed :)Take care,
Anand
surgex - Thursday, April 15, 2010 - link
Can you tell us how this will work, or IF it will work at all?surgex - Thursday, April 15, 2010 - link
Sorry, I see it now.."Despite using a NVIDIA GPU, there's no support for Optimus under Windows 7 on the new MacBook Pro. The GeForce GT 330M is always in use there regardless of whether you use an Optimus enabled driver or the 196.21 driver that comes with the MacBook Pro."
That is really BS if you ask me, but who would expect anything less from Apple...
Do you forsee any way of a third-party enabling this functionality in the future though, or no?