I believe you're correct about that, but what I want to know is: can you literally not use TB without a special GPU or can you just not use a TB monitor without a special GPU? What if you had to use the DVI port instead of the TB port for your monitor?
Bottom line... the PCIe bus has moved external. Anyone that did not see this coming has not been keeping up with current events. It's the beginning of the end for expansion cards. The future lies in TB peripherals that have the enormous benefit of being usable on a Mac Pro or a Mac Air with equal performance and simplicity.
While TB is certainly a great technology, it will never actually replace PCIe, simply because it is ridiculous for most users to run a cord outside their case to another case for devices that could've been in their original case.
Why have more than 1 PSU and case for all these devices? It's a smaller footprint to put them in a single box.
My understanding is that TB requires a GPU integrated with the main board. And from what I've read, you can use MDP displays on TB ports, but TB displays require TB ports. And no Apple display made in the last 4 years has supported DVI. Hence, this new Mac Pro with custom integrated GPUs and multiple TB ports is not unexpected in order to support TB.
S: You can't have the Mac Pro and Thunderbolt without doing exactly what they've done. I called that one months and months ago. It is impossible to run Thunderbolt on a Mac Pro without proprietary video cards. So really, your only choice boils down to an updated Mac Pro in the existing form factor OR the new Mac Pro with Thunderbolt (any version). You can't have both.
So far...
70.24% votes for OLD design and only 29.76% for the trash can LOL![]()
Why do you think the new Mac Pro is going to be delayed so long? I think it will be released later this year as advertised. I suspect it will coincide with Mavericks' release.JUST GIVE US ONE OF THESE IN JULY 2013 UNTIL THE BIN COMES OUT NEXT YEAR!!
- there's also the much higher latency of thunderbolt vs PCIe,
- and I don't think the memory access will work quite as well.
- Is there? I've been looking for info on that but haven't found any. In fact what I have found claims it's about the same. Got a source?
- Why? What??? What would make you think that? And what exactly do you mean? Can you elaborate a little? Thanks!
I voted for the new model but in reality I don't care. Either way is fine. Either it's $4k for a big box with SATA bays and PCI slots or it's $2.6K and I'll buy the bays and slots when and if I need them. So either is fine. In my case as i guess it is with over 80% here, I only need PCI slots for the GPU and the MP has that covered so all that's really missing in my case is the SATA bays. And I have buttloads of eSATA enclosures all ready and pluggable to the MP so no problems there.
Again, either way is fine. I do find the new design appealing tho - I mean a mini dark R2D2 tube shaped computer... How cool is that!?!![]()
I wonder if some fanboys will band together and stack the poll with ghost accounts. So far it's been 2 or 3 to 1 against the new design
Even TB 2 is still only PCIe 4x at 3.0 speeds. Bottlenecks have been shown with similar bandwidth over PCIe, I don't see how they'll escape that. I'm also concerned about latency, but the theoretical limits of the interface are reason enough to say PCIe hasn't been replaced yet
You Mean your not interested in a PCIe SSD?
OK, that would be approximately 3.5GB/s per TB2 connection. Tho the TB2 spec is 20Gb/s which is about 2GB/s. So like I said with three of them each having 3 or 4 SSDs connected up you should be able to get somewhere between 5 and 6GB/s total.
For drives that's clearly plenty, but for external GPUs there's that bottleneck. Sorry, I should've specified, I was between tasks on my iPad at work.
Edit: So reading the combination of the articles below, the 7970 bottlenecks at below 8GBps, which is roughly 4 times what TB2 can provide. TB2 is the basically the same as PCIe 3.0 at 2x. Bottle necks were seen in testing at PCIe 3 at 4x and especially at 2x.
Benchmarks
PCIe
Therefore, TB2 will be woefully inadequate for external GPUs, even if you ignore latency issues (which we will find out via benchmarks later, likely to the howls of fanboys everywhere). I know you weren't making that argument, but I wanted to let you know what I found.