This morning Apple updated its MacBook Air to Intel's Haswell ULT silicon. The chassis itself didn't get any updates, nor did the displays. Both the 11 and 13 inch models retain their non-Retina 1366 x 768 and 1440 x 900 displays. There's a slight increase in battery capacity. The 11-inch model moves to 38Wh (8.6%) while the 13-inch model goes to 54.4Wh (8.8%). The big changes however are on the CPU, NAND and DRAM fronts.

With the new MacBook Air, Apple moves to a Core i5-4250U. The base clock drops to 1.3GHz across all of the models, but max turbo remains at 2.6GHz. Although the base clock is lower, I wouldn't expect substantially lower performance since the max turbo is unchanged as is the chassis that has to dissipate the thermals. To confirm, I ran a couple of Cinebench tests and generally found performance similar to that of last year's models:

3D Rendering Performance - Cinebench R11.5

3D Rendering Performance - Cinebench R11.5

The 1.8GHz i5 in the 13-inch ended up being a bit quicker than the 1.3GHz 4250U this generation in the multithreaded test, but in single threaded performance the two are equal. The impact on the MT test is about 5%, it's there but not substantial. Don't be fooled by base clock, it's the combination of base clock, max turbo and cooling solution that'll determine performance here. As we found in our Haswell ULT review, CPU performance isn't something you can expect to see more of with Haswell vs. Ivy Bridge in these low wattage platforms.

You can get a 1.7GHz Core i7 upgrade with a 3.3GHz max turbo (i7-4650U). Both parts have Intel GT3 graphics clocked at a max of 1GHz on the i5 and 1.1GHz on the i7. Since the max GPU clocks are south of 1.2GHz, this is officially Intel's HD 5000 graphics and not Iris despite using the same silicon. The GPU base clock drops from 350MHz down to 200MHz, which should help reduce idle power consumption.

2013 MacBook Air Lineup
  11.6-inch 11.6-inch (high-end) 13.3-inch 13.3-inch (high-end)
Dimensions H: 0.11-0.68" (0.3-1.7cm)
W: 11.8" (30cm)
D: 7.56" (19.2cm)
H: 0.11-0.68" (0.3-1.7cm)
W: 12.8" (32.5cm)
D: 8.94" (22.7cm)
Weight 2.38 lbs (1.08kg) 2.96 lbs (1.35kg)
CPU 1.3GHz dual-core Core i5 1.3GHz dual-core Core i5
GPU Intel HD 5000
Display Resolution 1366 x 768 1440 x 900
Ports Thunderbolt, 2x USB 3.0, headphone jack Thunderbolt, 2x USB 3.0, SD card slot, headphone jack
Price $999 $1199 $1099 $1299

On the storage front, Apple officially leads the charge with the move to PCIe based SSDs. The upcoming Mac Pro, as well as the new MacBook Airs both use PCIe based SSDs instead of SATA drives. A quick look at OS X's system profiler reveals a PCIe 2.0 x2 interface, capable of 1GB/s in each direction. 

The drive in my system uses a Samsung controller, although I've heard that SanDisk will have a PCIe solution for Apple as well. A quick run through Quick Bench reveals peak sequential read/write performance of nearly 800MB/s:

This is a pretty big deal, as it is probably the first step towards PCIe storage in a mainstream consumer device that we've seen. I'm still awaiting official confirmation as to whether or not this is an M.2 based solution or a proprietary connector. Update: It's a custom Apple design, not M.2. Since there's no PCIe routed off of the CPU in Haswell ULT, these 2 lanes come from the on-package PCH.

The other big change is the move from DDR3L to LPDDR3, a new feature supported by Haswell ULT. I need to go back and dig through the Haswell ULT datasheets again, but I believe the total memory interface width remains at 128-bits wide even if you use LPDDR3 - you just get lower power consumption. 

Obviously battery life is the biggest improvement here with the new MacBook Air. Thanks to Haswell's platform power optimizations, Apple claims up to 12 hours on a single charge for the 2013 13-inch MacBook Air. Given the improvements I saw in our Haswell ULT review, I don't doubt that we could see some very good numbers out of these notebooks.

I just got my hands on a 13-inch 2013 MBA and I'll be running performance tests (including the first look at Intel's HD 5000 graphics) over the coming days. I'm still traveling until Thursday but I'll do my best to run battery life tests while I'm on the road as well. More soon!

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  • doobydoo - Wednesday, June 12, 2013 - link

    The Sony Vaio (which I purchased last year) is flimsy as hell, screen hinges are awful, feels plasticy and not well built at all - horrible mousepad compared to the Air (which I also own), and despite a QUAD SSD it's still slower than the Macbook Air.
  • Neurus - Wednesday, June 12, 2013 - link

    Last time I heard the Sony Vaio didn't come with OS X ;)
  • doobydoo - Monday, June 17, 2013 - link

    I run Windows 7 on both.
  • jb510 - Tuesday, June 11, 2013 - link

    They announced the new MBA had 11ac, but I can't find any reference to how many streams it supports? Anyone?
  • abrowne1993 - Tuesday, June 11, 2013 - link

    Other than the move to PCIe SSDs, it seems like kind of a boring, run-of-the-mill update. Everything is going to be getting Haswell so we should see similar battery life improvements across the board as well as the other benefits that brings. I suppose the change to LPDDR3 will be nice for its lower power consumption, but it's possible other vendors will switch, too. I don't know how prevalent 802.11ac is now, but I can't imagine most consumers will need it or notice the difference.
    I wasn't expecting a retina MBA because of the obvious downsides, but something new or interesting would have been nice.
  • JJWu - Tuesday, June 11, 2013 - link

    Intel Haswell-ULT supports LPDDR3. Haswell-ULT supports many low power interfaces moilbe device uses, such as LPDDR3, SDIO, UART...etc.
    Does the WiFi use SDIO interface as Intel suggests?
  • npp - Tuesday, June 11, 2013 - link

    I can't help but feel a bit frustrated about all the comments here. A 800mb/s next-gen SSD, 12h battery life, plenty of CPU performance, much improved wireless connectivity, 100$ cheaper than the previous model, and still some people feel disappointed... Design? It's still one of the best in the industry, if not the best. Display? It's of very high quality anyway, even if it lacks those sacred 180 pixels in height to make it 1080p. I really don't get it, this is by all sensible criteria an excellent machine.
  • Scannall - Tuesday, June 11, 2013 - link

    Most of the complaints are just trolls that wouldn't buy an Apple product anyway. Just disregard them, it makes life much more pleasant.
  • Roland00Address - Tuesday, June 11, 2013 - link

    My only complaint is the lack of an IPS screen. Yes apple has one of the best TN screens on the market but it would be nice to be IPS. Of course the problem with that is that it removes differnentation with the retina model even if the retina model has 4x the resolution. Apple wants you to pay $400 more for IPS and 4x resolution, instead of $100 more for ips
  • Death666Angel - Tuesday, June 11, 2013 - link

    Interesting, I was expecting more rage concerning the resolution. Sub 1080p in windows notebooks usually get tons of rage for that low resolution.

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