The Apple Thunderbolt Display Review
by Anand Lal Shimpi on September 23, 2011 2:56 AM EST- Posted in
- Displays
- Mac
- Apple
- Thunderbolt
- Thunderbolt Display
Thunderbolt Performance
The Eagle Ridge Thunderbolt controller is home to two Thunderbolt channels, each one is good for up to 10Gbps in either direction (up or downstream). That works out to be 20Gbps of bandwidth per channel or 40Gbps aggregate between the two. You can only send two channels worth of data down a single Thunderbolt cable, so there's no point to having more than two from a performance standpoint unless you have more than one port on your system.
If DisplayPort and PCIe traffic are indeed carried on separate channels, then the Thunderbolt Display by itself is eating up around 70% of the bandwidth of a single channel on its own (2560 x 1440 x 32bpp x 60Hz with 8b/10b encoding > 6.75Gbps). That leaves 10Gbps in each direction for PCIe traffic. If we look at our benchmarks from the previous section we see that we can hit just under 2Gbps with all of the auxiliary interfaces (GigE, FW800, USB2) running. Given our previous investigation with the Promise Pegasus we know that 8Gbps is feasible there as well. It's possible, that with everything running at once, we could actually run into bottlenecks with Thunderbolt.
To find out I ran a few tests. First I needed a baseline so I threw four SF-2281 SSDs into the Pegasus R6 chassis and configured them in a RAID-0 array. I ran a 2MB sequential read test (QD=16) and measured 909MB/s from the array. This value was obtained without the Thunderbolt Display connected, only the Pegasus R6.
Next I connected the Thunderbolt Display directly to my test MacBook Pro, and then connected the Pegasus to it. I repeated the test, this time getting 900MB/s. Thankfully the presence of the Thunderbolt Display doesn't seem to impact the max data rate I can get from the Pegasus.
For my third test I added a Gigabit Ethernet transfer from a file server to a local SSD using the GigE port on the display. During this test I was also playing back music using the Thunderbolt Display's internal audio codec and speakers. I re-ran the Pegasus test and got 855MB/s.
For my final test I re-ran the third test but added a FireWire 800 to USB 2.0 SSD transfer, both connected to the Thunderbolt Display. I also fired up the FaceTime HD camera on the display using Photo Booth and left it on during the test. The final performance score from the Pegasus was 817MB/s.
With everything running Thunderbolt performance took a 10% hit. Note that the standard Pegasus configuration isn't able to hit these data rates to begin with, so unless you've pulled out the 12TB of storage and stuck in your own SSDs you won't see any performance drop.
What this does tell me however is the ultra high end users that are looking to daisy chain multiple Thunderbolt storage boxes together may not want to do so. I only have a single Pegasus R6 on hand, but I'm guessing there will be significant performance drop off after the first box. Not that I'm complaining about being able to push nearly 1GB/s over a $49 cable from a notebook, I'm just trying to give a heads up to those who may have aspirations of even higher performance.
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Omid.M - Saturday, September 24, 2011 - link
Anand to smile at the camera and point to the lower right of the screen at a QR code that launches a mail client with a URL to the review...to share with others. Oops, thinking outloud.@moids
You get my email a while back, Anand? I know you've been slammed with your schedule!
nameless_1 - Saturday, September 24, 2011 - link
You could have this ten years ago without plugging any cables at all, not even two. Just buy a docking station for your laptop. Or is the news that it is finally possible on a Mac...ufon68 - Saturday, September 24, 2011 - link
Awesome video.Death666Angel - Saturday, September 24, 2011 - link
"Thanks to SSDs, Turbo Boost and Thunderbolt the only thing holding notebooks back from being true desktop replacements is GPU performance."And the fact that performance per buck is still about 3 to 5 times worse than any desktop PC. Unless you are very well off or need a notebook for your work, chances are, you can't afford a real desktop replacement notebook.
tommyj - Saturday, September 24, 2011 - link
A typical i5 laptop, which is like $600 (Thinkpad Edge), basically does what a typical desktop does extremely well and comes with a keyboard, pointing device, and screen if you are really destitute. As Anand said, the only thing holding them back is the GPU and frankly a lot of people cannot really use one properly (if you don't play games and don't dabble with professional applications, its going to sit idle). Spend another $100-250 and you can throw a very nice SSD to make it feel really snappy.If you want to bring up Apple, the base Macbook Air is like $1000 and its powerful enough for every task people need to do. For most users, even those who use their machines for prosumer purposes, processor speed becomes less of a necessity but a luxury really.
Increasingly, people are finding desktops less and less worthwhile. The only reason I still own, and upgrade, mine is because it can hold the latest and greatest GPU.
bigpics - Saturday, September 24, 2011 - link
As someone else pointed out to me, notebook performance, especially light-weight notebook performance is changing on more important variables more quickly than monitor tech.So this monitor suggests a new cost effective strategy for a one-machine-to-do-it-all setup. This should work out well as long as you don't need the latest, latest performance bumps in the MBP line while on the road (or the top iMac performance at home).
The strategy is to buy the best MB Air + this monitor, and then replace the CPU piece every year or two - when the available air performance will stay equivalent to the performance of a one or two year old pro. (And note that while some performance is incrementally sacrificed, portability is incrementally increased - AND you get this gorgeous screen - which might meet some users' needs better in the first place.)
Here's a current high-end MBP 15":
$2,999.00
2.2GHz Quad-core Intel Core i7
8GB 1333MHz DDR3 SDRAM - 2x4GB
256GB Solid State Drive
SuperDrive 8x (DVD±R DL/DVD±RW/CD-RW)
MacBook Pro 15-inch Hi-Res Glossy Widescreen Display
And here's a current high-end MBA 13.3" INCLUDING the Thunderbolt monitor:
$2777.00
Apple Thunderbolt Display (27-inch) ($999)
MBA 13.3" ($1778)
1.8GHz Dual-Core Intel Core i7
4GB 1333MHz DDR3 SDRAM
256GB flash storage
External Apple MacBook Air SuperDrive
Of course some of you might need and be able to get both the MBP and the monitor - lucky you, but let's say you have SOME real world budget constraints, and over the next six years, you replace the MBA twice (at 2 and 4 years in) as it advances, and the MBP once (3 years in).
Assuming constant prices - not entirely unreasonable with Apple speculation - and a 6 year usable lifetime for the monitor (even though it will certainly be upgraded with, say, USB 3 and more - but the same cost to replace in either strategy), here's your total bill (exclusive of other peripherals, cables, etc.):
1. You have this monitor and a three year old MBP 15":
$6997 spent.
(Add the cost of iPads if the MBP is just too much for some outings and you need something lighter)
2. You have this monitor and two year old MBA (of whatever "):
$6333 spent.
So a reasonable approach I would say (and even wonder if Apple's not encouraging it in some ways). Consider one last comparison - your best stay at home (no notebook capabiity) iMac options. And we'll specify that some of you will want more net and more capable apps on the road than you can get on your phone, so you'll meet your away from home needs with three baseline iPads over the 6 years
3. So here's for two top of the line iMacs and possible iPads:
$6798 spent on iMacs
$1497 on iPads
$ 8295 spent
One more cost saving (over a height adjustable desk) possiblity: a. Old phone books (free) and b) height adjustable chairs (a few hundred more at most).
sreams - Saturday, September 24, 2011 - link
When you close the Macbook Air, you aren't "sleeping" it. You're just closing it.dsumanik - Sunday, September 25, 2011 - link
nice production sound, and dialogue on the video..well done.Some problems though unfortunately:
"Personally, I use a height adjustable desk as I find it helps me avoid any carpal tunnel pain. Combined with a height adjustable chair, the lack of height adjustment on the display doesn't bother me."
Uh huh.
I should buy this display and get an adjustable desk.
Thats the OBVIOUS solution.
Not only a facepalm by apple's designers...(i mean how hard would it be to make it adjustable a few inches?) but also a total facepalm in the pro apple bias department.
This review was a commercial for apple, plain and simple.
Why not start accepting payment from apple?
You might as well if you gonna be a part of thier marketing team.
Your own words:
"a must have item for macbook owners"
PFFFFFFFFFFFFFFFTTTTT.
ill save people the 15 minute advertisement;
pros:
single cable to connect and charge
nice material and design
cons:
-no sound
-no usb 3
-incompatible with anything but 2011 macbooks
-1000 dollars (i could buy 5 1920x1080 displays for same price)
-you need to buy an adjustable desk and chair
Amazing what you can sell people if it comes in a nice shiny package...even a seasoned, unpaid, objective and intelligent reviewer fell for it hook line and sinker.
hey apple if you reading this...
Where my integrated iphone dock?
Constructor - Sunday, September 25, 2011 - link
He simply said that he had that anyway, so the lack of height adjustability didn't bother him.
And I shudder to think how heavy and still wobbly a height-adjustable stand would have to be for my 27" iMac. The TBD is not quite as heavy, but I rather live with an additional socket to get it to the desired height for me than dealing with the usual wobbly mechanism I know from other monitors (such as the secondary Samsung next to the iMac, which also needs an additional stand to get it high enough). I'm rather tall and most adjustable stands end too low anyway, so there would be no benefit for me anyway.
Quite hard to make it really sufficient. Just "a few inches" are worthless. Inclination adjustment is enough for that. And making an iMac 27" or a TBD adjustable by the amount I really needed would make the stand very wobbly and/or very heavy and very wide.
This is a lot more difficult than you seem to get.
"Pfft" indeed. You completely misrepresent what Anand actually said: "For MacBook Air owners who don't have options for these high speed interfaces to begin with, the Thunderbolt Display is a must-have."
Further: For me the Thunderbolt Display is good but not perfect. I wish it had a 1/8" stereo output, an SD card reader and USB 3.0 support. Give me those things and I'd be ecstatic. There's always next year's model.
It seems you are the one who's suffering from a heavily distorted perception here.
- very high resolution (2560*1440) high-grade IPS display
- multiple expansion ports, including Gigabit Ethernet and FireWire 800
- built-in speakers, microphone and HD webcam
Wrong. It's got built-in speakers (and a microphone). It only has no additional audio output socket (every MacBook has one already built in).
Also wrong. All recent iMacs and Mac minis plus all further upcoming Macs plus many upcoming PCs will also be able to use it.
Sure. The problem is that they are low-grade TN displays with a much lower resolution with not much more than half the number of pixels of the TBD, which also has a much higher-grade IPS panel.
I've got one of those lower-grade TN panels as a secondary monitor next to my iMac 27", and the difference both in resolution and in contrast range is substantial. The Apple display is definitely worth its price, even and especially in direct comparison, which I have.
I'm tempted to replace that secondary display with another Apple 27" display.
Nonsense. I've just propped it up on a socket on the table. And most shorter people won't even need that.
It seems you've had trouble understanding both the product and the review yourself.
If you have no use for a product on that level, that is perfectly all right. But other people do have an interest in new technology, and reviews like Anand's, which went very much into the depths of the new base technology, are among the reasons why technology journalism has an important role to begin with.
Apple just happens to be the one pushing this new technology. If you want to complain about something, complain about PC manufacturers sitting on their hands while Apple is running away with new technology and an increasing share of the market profits earned.
Constructor - Sunday, September 25, 2011 - link
Quoting seems to be broken. There have been paragraphs (double newlines) between the quotes and the comment. Weird.