ASUS N53JF Battery Life: Not Bad for 48Wh, but Please Give Us 63Wh!

We’ve complained about the use of older and smaller 48Wh batteries in midrange notebooks quite a few times, but the N53JF continues that trend. That puts it at a definite disadvantage relative to Dell XPS’ 56Wh battery, as well as Compal’s 58Wh and Clevo’s 62Wh offerings. But higher capacity isn’t the only game in town; making better use of that capacity is still possible with BIOS and hardware optimizations, and ASUS does very well in this regard. Combined with NVIDIA’s Optimus Technology, we end up with roughly four hours of useful battery life, or just under 2.5 hours of H.264 playback.

ASUS also has their “Super Hybrid Engine” available, which underclocks the CPU and locks the maximum multiplier when enabled. We test with modified Power Saver settings normally, which already locks the CPU multiplier to the minimum, but SHE is still able to wring an extra few minutes out of the battery. We left it enabled for the battery life testing, so the results are the best-case scenario. We also disable any unnecessary utilities and software, and set the LCD to 100nits (45% in this case).

Battery Life - Idle

Battery Life - Internet

Battery Life - H.264 Playback

Relative Battery Life

Despite having a smaller battery, ASUS beats the Clevo notebook in two of the three tests. The Compal result on the other hand isn’t so surprising, given the always-on GPU. We commented in the past that the Dell XPS had a substandard Internet result (despite multiple test runs), and that shows up again as the one inexplicable loss to the ASUS. In general, though, battery life is decent and enough for typical users. You’ll still want the power brick handy if you play any games or want to watch a Blu-ray from an actual disc, however—we measured just 90 minutes playing an 35Mbps AVC Blu-ray video (Jumper).

Gaming Performance The LCD, Temperatures, and Noise
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  • Kaboose - Wednesday, December 29, 2010 - link

    i sure hope that is why there isn't a single dell laptop offering a 1080p screen at the moment. (including alienware taxed items)
  • chemist1 - Tuesday, December 28, 2010 - link

    Hi Jarred,

    Thanks for the review. A friend of mine recently priced out a Sony Vaio F series laptop: 16.4" 1080p screen, Blu-Ray R/W drive, NVIDIA GeForce GT 425M GPU, and an Intel Quad Core i7-840QM Processor (1.86GHz, turbo up to 3.20GHz) ---he said it was about $1300. Perhaps that is worth a review.....
  • cgeorgescu - Tuesday, December 28, 2010 - link

    Very nice laptop... Check out the "premium" screens on all Vaio models, really nice, not led-backlight or any fancy stuff but perfect angles, 100% adobe RGB, perfect. And matte.

    I've got not the F but the EC because of 17.3 instead of 16.4 and two drive bays.
  • chemist1 - Tuesday, December 28, 2010 - link

    correction: just checked it myself, and it's $1300 (on the Sony site) with a Core Quad i7-740QM processor (1.73GHz with turbo up to 2.93GHz).

    The EC series cgeorgescu mentioned might be an even better buy. With a 1080p 17.3" screen (a bit more suitable for 1080p than the F's 16.4) , Blu-Ray R/W, ATI HD 5650 (don't know how that compares with the 425M on the F series), and Core i5-580M processor (2.66GHz, with turbo to 3.33GHz ) (Core i7 not offered on the EC series), it prices out to $1200.

    And, as with the F series, if you downgrade from a Blu-Ray RW to a CV/DVD RW, you can subtract $150.
  • chemist1 - Tuesday, December 28, 2010 - link

    Further, if we downgrade the EC series to make it comparable to the Asus reviewed here (Blu Ray read only + CD/DVD RW, Core i5 460, 1080p), the Sony site has it at $1020 --- nearly the same as the $1030 Asus but with what I understand is a much better screen (plus the extra drive bay that cgeorgescu mentioned, and the free Adobe Acrobat/Photoshop bundle).
  • JarredWalton - Tuesday, December 28, 2010 - link

    Don't forget that quad-core Clarksfield CPUs are horribly power inefficient, so you'd sacrifice quite a bit of battery life. Given that Sandy Bridge will address this, there's basically no point in looking at any more Core 2010 or Clarksfield laptops.
  • chemist1 - Wednesday, December 29, 2010 - link

    Understood, thanks for your reply. But that leaves unanswered the obvious follow-up question, which is that of why, given that these Vaios have been out for a while, and given that they may represent the best value available in ~$1K laptops (say, the dual-core EC series), you folks didn't include them among your recent looks at mid-range laptops (e.g., the Vaios weren't mentioned in your 11/15/10 "Holiday Buyer's Guide: Notebooks"). Did you consider them and discount them for some reason, or was it something else? Since choosing what to review from amongst a large universe of products is a significant part of what a tech journalist must do, I was just wondering what goes into these sorts of decisions.
  • JarredWalton - Wednesday, December 29, 2010 - link

    The biggest issue is that Sony basically has no interest in seeding reviewers with hardware. While you could try to buy/review/eBay laptops, I don't have enough time/money to go that route, and we've been busy with other items. We did mention the VAIO Z in the guide, but most of the time I have difficulty justifying the Sony Tax. And not all Sony laptops have good displays either -- I've looked at more than a few at Best Buy, etc. Without hands-on time or input from someone I trust, I'm not willing to recommend a laptop as having a good LCD. :-\

    I'll see if I can get Sony to be a little more forthcoming at CES, but I've gone down that road before to no avail.
  • chemist1 - Wednesday, December 29, 2010 - link

    Thanks for the explanation! Why there had been no review of this particular (and seemingly high-value) part of the Vaio line was something I'd been curious about for a while, so it's nice to understand the manufacturer's role in this (a factor I had not considered).
  • Hrel - Tuesday, December 28, 2010 - link

    You guys and ur glossy bezel on the screen. Put ur thumb on the edge of the screen to open the laptop, there, problem solved. lol. wow.

    Other than that nit-picky sillyness I was REALLY saddened to see those low scores on that Asus. I read it had to same display as the Dell used to and got all excited then those scores... I guess they had to save money somewhere to hit 1000 bucks AND have a blu ray drive. Honestly, I almost never use disks at all anymore and have never even touched a blu ray disc. Don't include any CD drive at all, put in a bigger battery and better screen and non-name-brand speakers that don't suck and I'd be good. If the marketing guys insist on a cd drive use the cheapest one you can find.

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