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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  • Dug - Wednesday, June 12, 2013 - link

    We didn't need more than 64k of memory either. I'll take the improved speeds of the pcie bus whether you think a typical user will have need for it or not.

    Blackmagic Disk Speed Test. Engadget recorded read speeds of 725.4 MB/s and write speeds of 433.4 MB/s, which is almost twice the speed of the current 15-inch MacBook Pro with Retina display.
  • marco89nish - Monday, June 10, 2013 - link

    SATA is limited to 6Gbps, 550MBps in practice, while single PCIe can carry up to 5Gbps. So, couple of PCIe lanes are decent upgrade to SATA.
  • NikiK - Thursday, June 13, 2013 - link

    Looks like Apple decided to go conservative using two links of PCIe Gen 2 at 2.5Gbps rather than a single PCIe Gen 3 link. Probably easier to have a more robust connection too.
  • twistedgamez - Monday, June 10, 2013 - link

    the PCIe SSD sound awesome!
  • Lord 666 - Monday, June 10, 2013 - link

    Looking to see the battery life difference, if any, between the 13" i5 and i7 models. Was hoping for the rMBP 13" to be updated, but my laptop is on its last legs.
  • StealthGhost - Tuesday, June 11, 2013 - link

    Me too but I don't think intel released the processors for the MBPros yet
  • 8steve8 - Monday, June 10, 2013 - link

    is the TB port TB1/DP1.1 or is it TB2/DP1.2 ??
    i thought i read the new TB hardware for haswell platforms is TB2/DP1.2, is that the case here?
  • repoman27 - Monday, June 10, 2013 - link

    Redwood Ridge, i.e. still Thunderbolt 1, but with DisplayPort 1.2 capability when directly connected to a display and operating in DisplayPort signaling mode.
  • 8steve8 - Tuesday, June 11, 2013 - link

    do you have a source for this?
    also, that means we can do DP MST and have up to 3 displays?
  • 8steve8 - Tuesday, June 11, 2013 - link

    oh nevermind, i misread the other article, redwood ridge is tb1, falcon ridge which is not out is tb2.

    Thanks repoman27

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