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
Comments Locked

198 Comments

View All Comments

  • Pandamonium - Thursday, March 10, 2011 - link

    I own a 15" 2010 MBP and like the author(s) of "The Big Picture" section, I like using separate peripherals at home. I don't want to come off like I'm giving a sales pitch, but after a long wait, I bought a Henge Dock for my MBP. It's a $70 plastic mold whose only purpose is to hold your cables in place so you can easily/quickly "dock" a MBP.

    For security concerns, I made an encrypted volume with OS X's disk utility and keep my frequently accessed sensitive stuff there. Everything else sits on my NAS.

    I control heat and noise with SMC Fan Control. I've got a profile to keep "docked" fan speeds just a notch faster than default (the fan speed ramping up and down irritates me more than the absolute noise of the fan), and another profile for "lap use" to keep the machine at a comfortable temperature.

    I too think that Thunderbolt is a big step towards an Apple docking station, but for now, the Hengedock, a NAS, and SMC Fan Control give me a solution that while not as elegant, is 95% of the way there.
  • Pandamonium - Thursday, March 10, 2011 - link

    I should add that I use a Synology DS 209. If I could do it all over again, I'd go with QNAP. See my comments on Ganesh's Synology review for my reasoning. Cliffnotes are that I believe that regular SMART tests (to detect bit rot) should be part of a NAS's software stack and Synology's PR begs to differ. I'd love for Anand to offer clear advice one way or the other.
  • dagamer34 - Thursday, March 10, 2011 - link

    Does high amounts of heat ever mess up the screen or affect the dissipation of heat? I'd get worried if I were running a render or playing a game that caused my MBP to hit higher than the 80C it does now and the laptop just shuts itself down because it's too hot.
  • dagamer34 - Thursday, March 10, 2011 - link

    Based on this review and using a 17" MacBook Pro (2011), here's my advice:

    13" MacBook Pro - the changes from the 2010->2011 are good if you do CPU tasks, but mediocre to lame for GPU tasks. If you want to game, I'd wait until Ivy Bridge with a better GPU. Hopefully, we'll also see something more radical with ditching the optical drive allowing for a larger battery and dedicated GPU, but we'll see how that turns out.

    Base 15" MacBook Pro - very good if you have CPU driven tasks, and what I'd recommend for most people. The only offsetting thing I see is that the next step up has a CPU, GPU, and VRAM bump, which may be very enticing for gamers.

    High-end 15" MacBook Pro - for gamers, with the most optimal CPU, GPU, and VRAM configuration there is while still being very portable.

    17" MacBook Pro - you love high-resolution screens for your work but still need to be portable. Very ideal because of the ability to have a full 1080p picture on the screen untouched for editing websites and such. Also good for photoshop. Likely for people that feel having an additional monitor is too much work, or their second monitor should be comparable in screen resolution to their main one.

    I do hope the 2012 MacBook Pros cut away a lot of the fat: optical drive, FireWire port, USB port, ExpressCard slot and just have most of that functionality replicated with ThunderBolt. I feel like they could have gotten away with it this time, but there were no peripheral style docks ready, which is rather disappointing.
  • Ushio01 - Thursday, March 10, 2011 - link

    Optical drives are still essential for those of us in the majority of the world who's internet is useless not to mention you never know if throttling or low data caps will be introduced in area's with currently good internet access subsequently making the loss of an optical drive a drawback.

    Also interesting phrase cutting the fat or in other word's continue paying for a premium product but get even less for your money, yay.
  • dagamer34 - Thursday, March 10, 2011 - link

    That's what the $79 External SuperDrive is for.
  • Ushio01 - Thursday, March 10, 2011 - link

    Yay pay $1200+ for a laptop then pay $80 for the ability to use anything on it.
  • khimera2000 - Friday, March 11, 2011 - link

    Its apple your paying out of the @$$ any how. If you where going for a budget, or "price VS performance" you would not be considering an apple. I think people looking at these will have 80 bucks to spare... at least be able to scrounge up 80 bucks when the need arives.
  • mianmian - Thursday, March 10, 2011 - link

    Yeh. Apple should have the upgrade option to replace optic drive to
    1. a 2.5" drive slot
    2. an extened battery.
  • gstrickler - Thursday, March 10, 2011 - link

    I doubt you'll see either from Apple, however:

    For #1, an OptiBay from MCE (MCEtech.com), or a DataDoubler from OWC (macsales.com). The MCE offers an external USB case for the removed SuperDrive so you still have the use of the SuperDrive, and it's USB powered so it's still portable.

    For #2, HyperMac (hypershop.com) sells external portable batteries for the MB/MBP.

Log in

Don't have an account? Sign up now