6Gbps SATA

Twenty eight days after Intel launched its Sandy Bridge microprocessors, it announced the stop-shipment of all 6-series Sandy Bridge chipsets. The first shipping version of these chipsets (B2 stepping) was affected by an unfortunate "oversight" that could cause failure in the four 3Gbps SATA ports that branch off the chipset. The remaining two 6Gbps SATA ports were unaffected by the bug.

Most notebooks only use two of the six SATA ports supported by most members of Intel's 6-series chipset family. If a notebook design used the 6Gbps ports exclusively, the notebook would be fine to ship using the flawed B2 stepping parts. With the 3Gbps ports not in use the bug would never show up. Notebooks that used more than just two ports or used at least one of the 3Gbps ports would be affected and would have to be remanufactured with a fixed version of the 6-series chipset. Intel promised to begin shipping fixed (B3 stepping) 6-series chipsets by the end of February.

Apple announced and started selling the 2011 MacBook Pro lineup on February 24, four days before the end of the month. Surely that would be too soon for Apple's manufacturing partners to have received B3 stepping chipsets, built boards around them, integrated them into MacBook Pro designs and shipped them half way across the world to Apple stores all around the US.

Naturally Apple wouldn't comment on what chipset revision was in the 2011 MacBook Pro, so the first thing we did was check to see what SATA ports were in use on our systems.

Here we have the high end 15-inch MacBook Pro. I installed an Intel SSD 510 in the lone 2.5" drive bay and it is connected via a 6Gbps port internally:

So far, so good. The only other bay in the new MacBook Pro is used for the optical drive. And it's connected to a:

...3Gbps SATA port. Uh-oh.

Apple doesn't directly report chipset IDs under OS X. I installed Windows 7 via Boot Camp and headed over to device manager to pull the device ID of the SATA controller: 1C01.

Cross referencing with Intel's datasheets I found that there are two revisions of the SATA controller: 04 and 05. The latter is used in the "fixed" B3 stepping chipsets. And what do we have here at the end of the hardware ID string for the SATA controller?

REV_05.

This is a B3 stepping chipset. In fact, Apple's manufacturing partners seem to have received B3 chipsets before anyone else given that boards were produced, tested and shipped in time for a February 24th launch. It would appear that Apple was among the first if not the first company to receive B3 stepping 6-series chipsets. Although I had concern for the health of the Apple/Intel relationship over the past couple of years, it looks like the two are back to being bedfellows.

Internally there are no visible changes to the MacBook Pro's primary SATA cable. It's still a flex cable but apparently capable of delivering twice the bandwidth of last year's model. Apple doesn't ship the new MacBook Pros with any 6Gbps drives and I would be surprised if it selected anything other than Samsung or Toshiba for SSDs, which means even the SSD options are 3Gbps. Luckily I happen to have a small cache of SSDs, including a bunch of new 6Gbps offerings.

Mostly No QuickSync Apple's SSD Strategy
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  • mga318 - Tuesday, June 14, 2011 - link

    Apple just recently released an update for windows and bootcamp that said would provide a performance increase. I'm wondering whether that might of had an effect on Windows gaming since the initial review. Reply
  • macboy123 - Sunday, July 24, 2011 - link

    I have macbook pro mid 2010 with NVIDIA GT 330M and its crashes randomly & frequently (black screen of death).  NVIDIA card on MacBook pro is really CRAP & USELESS!!!!. Reply
  • gradyboy - Monday, August 15, 2011 - link

    I was checking in wikipedia about AES-NI and there was a link to intel site that now revises the info that the i7-2635QM has AES-NI support.

    I think the review should be updated to reflect that.

    link below:
    http://ark.intel.com/products/53463/Intel-Core-i7-...
    Reply
  • edgecrusherr160 - Wednesday, August 17, 2011 - link

    Not sure what the reviewer is talking about with the hinge. I've had a 13 Macbook Pro since Jun 10th 2009 that's seen HEAVY use. It opens and closes beautifully. I appreciate it even more when I use other types of laptops (even older Apples).

    I do agree on the gloss screens, and hate them. I love the fact that there's glass over the screes, really makes them feel solid and protected compared to other laptops. From my experience, no one comes close to the quality of an Apple laptop. I used to work at a computer store too. I wish they made the glass matte though. I have a matte screen protector on mine that distorts the color a little, but I've gotten used to it over the years. Still a shame I have to even use it though.
    Reply
  • abbylegg - Tuesday, August 30, 2011 - link

    Hi,
    Great review really helped out. I'm looking for a macbook pro but everywhere and shop is too expensive.. so i'm trying out freebiejeebies.co.uk which has been proven by The Gadget show, NBC News, BBC news and a couple more big channels and stations. If you would like to help me out on my task trying to get a macbook pro please sign up and fill out a offer for free on this link h t t p : / / g i f t s . f r e e b i e j e e b i e s . c o . u k / 3 8 5 0 2 9 (without spaces just incase this website banes the link) and i promise ill come back and review so you can do the same thing and receive a macbook pro!

    thankyou for your time

    Abby.
    Reply
  • Funkyfreshh8 - Tuesday, October 25, 2011 - link

    Did anyone else notice that in that first picture with the three MBP's stacked on top of each other, the caption says that the 2011 MBP is I the middle, but in the picture it's on the bottom. The one in the middle has a mini-display port, and the bottom one has a Thunderbolt logo instead. Reply
  • MiddletonBanks - Thursday, April 19, 2012 - link

    If you want to transfer big files quickly, have faster boot up and be able to open apps quickly then go for the top of the 15” macbook pro range with the 750GB drive. You can buy it here http://www.middletonbanks.com/acatalog/Apple_MacBo... for only £1,480 including VAT and delivery. Reply

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