SSD

The new Mac Pro does the right thing and abandons internal hard drives in favor of high-speed PCIe based storage. You could argue wanting more internal PCIe storage, but hard drives don’t belong inside this machine - for that there’s Thunderbolt 2.

There’s a single proprietary Apple PCIe SSD connector and module inside the new Mac Pro. The connector looks similar to what’s in the new MacBook Pro but I haven’t verified compatibility. Unlike the new MacBook Pros, the Mac Pro SSDs only ship in a x4 PCIe configuration. The result is faster peak sequential speeds.


Custom SSD behind the GPU board on the left

My review sample had a 512GB Samsung XP941 based drive. I believe this is a 2-bit-per-cell MLC design with a 512MB LPDDR2-1066 DRAM. Samsung’s SSD architectures have evolved pretty well over the years. As long as you’re careful not to completely fill the drive you should be ok from an IO consistency standpoint as well. I continue to recommend keeping around 15 - 20% of the SSD free if you want to keep performance at a relatively high level. Definitely keep this in mind if you’re torn about what capacity drive you should outfit your system with.

Mac Pro (Late 2013) SSD Options
  4-Core Config 6-Core Config
256GB Included Included
512GB +$300 +$300
1TB +$800 +$800

Apple offers three SSD capacities with the new Mac Pro: 256GB, 512GB and 1TB. Both default configurations come with a 256GB drive. Upgrades to 512GB/1TB cost the same regardless of your starting point: $300 and $800, respectively. Chances are you’re going to depend fairly heavily on external storage for media, which leaves you the flexibility of sticking with the base 256GB configuration. Personally I’d use the Mac Pro just as much as a regular PC (including gaming) as I would for photo/video work, so I’d push for the highest capacity SSD possible. Since Apple isn’t using a standard connector or form factor here, you can’t necessarily count on anyone offering a decent aftermarket solutions (although OWC has done so in the past). If OWC or anyone else was brave enough to produce an aftermarket Mac Pro SSD, it might come with fewer tradeoffs compared to what we’ve seen in the portable Mac space. I’m primarily talking about ultra low idle power not being as much of an issue for an SSD in the Mac Pro. Last time I looked, OWC’s aftermarket MacBook Air/Pro SSDs consumed more power at idle compared to the Apple OEM drives. The same issues wouldn’t matter in a Mac Pro.

I ran the 512GB SSD through our standard four-corners Iometer test suite. The numbers were expectedly a bit higher than what I measured on the 15-inch Haswell rMBP and the 21.5-inch Haswell iMac thanks to the drive’s PCIe x4 interface. Random write performance takes a step backwards but all of the results we're showing here are more than enough for single user workstation use. Although Mavericks itself seems to have issues that can cause high latency IO (particularly around quicklook), the SSD in the Mac Pro performed quite well.

Apple SSD Comparison - 128KB Sequential Read (QD1)

Apple SSD Comparison - 128KB Sequential Write (QD1)

Apple SSD Comparison - 4KB Random Read (QD3)

Apple SSD Comparison - 4KB Random Write (8GB LBA Space - QD3)

I’m beyond pleased to see that Apple has moved its Mac lineup virtually top to bottom to PCIe SSDs. This is absolutely the right approach, and one that all other OEMs should follow.

Gigabit Ethernet & WiFi

Broadcom won all of the networking sockets in the new Mac Pro. Each machine ships with two BCM57762 Gigabit Ethernet controllers and a BCM4360 802.11ac controller. Each controller is connected to its own PCIe 2.0 x1 lane, guaranteeing it more than enough bandwidth to operate at full speed. The GigE ports on the back of the Mac Pro are thus independent and can sustain full bandwidth in tandem.

The 802.11ac solution is the same 3-stream BCM4360 you’ll find in the new Haswell MacBook Pros. The Broadcom controller supports 80MHz wide channels and 256 QAM, resulting in a peak theoretical data rate of 433Mbps per stream. With three streams that works out to be a max negotiated PHY rate of 1.3Gbps.

In practice I found the Mac Pro’s WiFi performance in best conditions to be similar to that of the 21.5-inch 2013 iMac, which ships with the same hardware. Over UDP that amounts to just under 900Mbps, and a bit over 600Mbps over TCP. You’re still better off using GigE if you can, but 3-stream 802.11ac is arguably good enough if you can’t get a cable down to your Mac.

WiFi Performance

4K Support & The 4K Experience Thunderbolt 2
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  • Ppietra - Friday, January 3, 2014 - link

    An object with black color only implies that it absorbs visible light. Thermal radiation is mostly infrared not visible light, so being black has no consequence since there is nothing emitting visible radiation internally. Externally the surface is very reflective so no problem there either - not that there would be one it wasn’t reflective Reply
  • cosmotic - Tuesday, December 31, 2013 - link

    It would be nice to see storage performance of the Mac Pro SSD against RAID on mechanical disks and SSD disks from a previous Mac Pro model. Reply
  • cosmotic - Tuesday, December 31, 2013 - link

    Including IOPS Reply
  • acrown - Tuesday, December 31, 2013 - link

    The early 2008 Mac Pro does not support hyperthreadimg as your charts indicate. Of course I could just be doing something wrong with mine... Reply
  • acrown - Tuesday, December 31, 2013 - link

    Stupid onscreen keyboard. I meant hyperthreading of course. Reply
  • Anand Lal Shimpi - Tuesday, December 31, 2013 - link

    Whoops, you're right! Fixed :) Reply
  • acrown - Tuesday, December 31, 2013 - link

    Great article by the way. I'm so on the fence about whether to get one to replace my current Mac Pro.

    The read is tempting me more and more though...
    Reply
  • ananduser - Tuesday, December 31, 2013 - link

    It's actually simple, it's the best OSX workstation for seemingly only Apple software that actually makes full use of the GPU setup.

    If your workflow revolves exclusively around FCX, it is the only workstation you'll need. If you're an average consumer wanting a powerful OSX machine you'd better get a consumer oriented imac.

    PS: No need for me to mention that if you'll need CUDA and Windows then it's a bad buy.
    Reply
  • akdj - Wednesday, January 1, 2014 - link

    I'd expect OpenCL to become more and more and MORE ubiquitous as time marches on and Moore's law in relation to CPU slows...and more computing can be taken care of via screaming fast GPUs. Again. Early adopters. But CUDA/Windows options are aplenty. Just more expensive and without twin GPUs. Without PCIe storage. And.....oh yeah, their Windows boxes. At least with the MP you can run Windows...and perhaps, as we saw Adobe so quickly do with HiDPI support post rMBP release (along with hundreds of other apps and software companies)---hopefully Windows 8.2/9.x realizes the more significant 'all around' gains utilizing OpenCL (nVidia too?) than the very, VERY select software titles that take advantage of CUDA....and when they do, it's primal in comparison to what OpenCL opens the doors for. Literally. Everything Reply
  • moppop - Wednesday, January 1, 2014 - link

    Considering CUDA is a GPGPU API there's no door that OpenCL opens that CUDA can't do...in fact, you could say that CUDA opens more doors on an Nvidia GPU. Nvidia also supports OpenCL since it was among the parties to help expand the api spec, but make no mistake, their flagship is CUDA.

    Aside from shunning Nvidia to market-segments whose software will be at least CUDA-accelerated (if there's GPU accelaration at all), my main beef with the Mac Pro, however, is that there are artificial limits placed by the design. Namely 1 CPU socket and only 4 DIMM slots.

    For VFX/3DCG pros, the reality is that GPU rendering simply isn't there yet. Your PRMan, Mental Ray, V-Ray (not real-time V-Ray), Arnold, and Mantra renderers are still very much in the CPU world. When professionals buy a machine they need it to work now, and not 5 years from now. While the Mac Pro certainly appeals to portions of the pro market-segment, it was a simply foolish reason to castrate the Mac Pro.
    Reply

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