CPU Performance

To measure CPU performance we begin with a fairly standard measure of system responsiveness: boot time. With the last generation of upgrades to 6Gbps SATA, we saw a good decrease in boot time over the previous generation platforms. The new 13-inch MBA's PCIe SSD takes the crown as it boots ever so slightly quicker than last year's setup. In practice the difference is subtle, but something you can appreciate as the 2013 MBA's IO is just snappier all over.

Boot Performance

These next two charts look at single and multithreaded floating point performance using Cinebench 11.5. This test also gives us the rare opportunity of comparing to some older Mac Pro hardware as well from 2008 - 2010. Single threaded performance remains extremely important to overall system responsiveness, so it's always good to look at. As we found in our initial look at the new MBA, the 1.3GHz Core i5 CPU ends up performing about the same as last year's 1.8GHz part. I'd like to say it's all because of cooling and turbo boost, but in all likelihood Apple is trading some of Haswell's IPC gains for frequency here - enabling identical performance, at lower clocks thanks to Haswell's more efficient architecture.

3D Rendering Performance - Cinebench R11.5

3D Rendering Performance - Cinebench R11.5

The multithreaded performance story is a bit different. The 1.3GHz i5 regresses in performance by about 5%. Overall performance is still quicker than the 2011 models, as well as the i7 based 11-inch MBA from 2012. Here we're simply seeing the 15W TDP limits come into play. Sharing both PCH and dual-core CPU power in a lower thermal footprint than last year's CPU alone is responsible for what we see above.

Video transcoding is really best suited for the higher end machines, but that doesn't change the fact that it's done on MacBook Airs as well. We'll start by looking at performance under iMovie. Here we're importing 1080p video from a Nikon D7000 and optimizing it during import.

iMovie '11 Performance (Import + Optimize)

The 13-inch 1.3GHz Core i5 configuration performs similarly to last year's 11-inch 1.7GHz config. It's an interesting comparison because the 11-inch 2012 model is more thermally constrained than the 13-inch 2012 model, which is exactly what we see when we compare the 2013 13-inch MBA to the 2012 13-inch MBA. In this case the 2013 model is a hair quicker than the 2011.

iMovie '11 Performance (Export)

We see a similar story for a full video export. The 1.3GHz 2013 MBA slots in behind the 2011 model in this CPU bound test.

Final Cut Pro X falls on the professional end of the video production spectrum. The test file is the same here, but the workload is far more strenuous.

Final Cut Pro X - Import, Optimize, Analyze Video

Once again, we see roughly the same performance from the 13-inch 2013 1.3GHz i5 as the 11-inch 2012 MBA. Here we do see substantially better performance than the 2011 models.

Our two photo workloads generally agree with what we saw in the video tests. The 1.3GHz Haswell part is definitely slower than th e previous generation 1.7/1.8GHz SKUs:

Adobe Lightroom 3 Performance - Export Preset

Adobe Photoshop CS5 Performance

In our desktop review of Haswell I noted that performance in our compile test improved tremendously with the new architecture. As it's quite obvious that Haswell's IPC advantages don't surface all that much in our traditional suite, I wanted to see if perhaps things would be different in something that might lend itself better to Haswell's IPC improvements. I repeated our Firefox build test but under OS X. It's a multithreaded compile, with the number of threads set to 2x the number of cores (not threads) in a system. Unfortunately I came up with this bright idea while traveling, so I only had access to three machines: the 2013 13-inch MBA, the 15-inch rMBP and a 2GHz Core i7 2012 13-inch MBA. I'll add more results later, but I'm expecting this to be a part of our test suite going forward.

Xcode - Build FireFox (-sjN, N=2x Core Count)

The combination of Haswell and a really fast SSD appears to help narrow the gap between the much higher clocked 2012 model and the base 2013 13-inch MBA. Here the faster Ivy Bridge CPU is less than 2% quicker. I'll reserve final judgements until I get my hands on the 1.7GHz Core i7 model, but my guess is this is an example of the best case scenario for Haswell where you get equivalent performance to a higher clocked Ivy Bridge part but with much better thermal/noise/battery life characteristics. For example, the fan was never audible on the 2013 MBA while running this test compared to running at a very noticeable volume on the 2012 Core i7 model. The same goes for temperatures. The i7 2012 model tends to run about 5% warmer along the bottom of the chassis compared to the 2013 i5.

The CPUs The GPU: Intel HD 5000 (Haswell GT3)
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  • spronkey - Monday, June 24, 2013 - link

    Samsung LCDs might have slightly better early quality control. LG Display have been a bit notorious for early run issues with their panels lately. But I agree - taking these away, LG has more cred as a panel maker than Samsung does. Reply
  • airmantharp - Monday, June 24, 2013 - link

    I'd prove that LG makes a better screen than Samsung- but it's already been proven. Reply
  • Malih - Monday, June 24, 2013 - link

    The laptop focuses on being lightweight, thus thin, thus limited battery capacity,
    and limited battery capacity doesn't play well with high res display,

    They could choose to increase resolution with haswell and keep the same battery life, but seeing as they chose battery shows where they are focusing with Air.

    That means if you want high res display, then get Retina MBP instead.
    Reply
  • airmantharp - Monday, June 24, 2013 - link

    Your iPhone would like to have a talk with you. Reply
  • seapeople - Tuesday, June 25, 2013 - link

    And tell you about what? It's similar display resolution? Reply
  • abazigal - Monday, June 24, 2013 - link

    You can always pay more to have the air ship with more ram. Reply
  • darwinosx - Monday, June 24, 2013 - link

    Or faster procs or more sad. Reply
  • Strulf - Monday, June 24, 2013 - link

    Yep, 8 GB are possible. In the generation before already. Reply
  • MatthiasP - Monday, June 24, 2013 - link

    The resolution is quite OK if you consider the battery life and weight you get. Also both displays still offer a higher DPI than what you can get on the best desktop displays. What is really disappointing is the lack of an IPS panel. There is no excuse for that on a mobile device. Reply
  • Exelius - Monday, June 24, 2013 - link

    8gb is available as a BTO option. I have a 11" 2012 MBP with an i7-3667U and 8gb RAM and it's more than enough for running a VM and even for doing some database work. Honestly, the machine is still mostly bound by the speed of the SSD for every workload I use it for. I love the size of the 11".

    The only complaint I have is that the GPU is a bit anemic, which the Haswell update seems to have addressed. I find that the 2012 Air has some noticeable jerkiness driving a 1080p display in OS X, which I suspect is a large part of the reason that the Airs haven't had a larger display. Hopefully, with that limitation removed, Apple can start to put some higher resolution displays in these machines over the next year or two.
    Reply

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