Get a PCIe expansion card.Question about lightpeak: will there be a way to get lightpeak to older mac pros when it becomes available?
Get a PCIe expansion card.Question about lightpeak: will there be a way to get lightpeak to older mac pros when it becomes available?
Question about lightpeak: will there be a way to get lightpeak to older mac pros when it becomes available?
IMO, for professionals looking for more performance, Sandy Bridge is irrelevant. Look at this sneak peak of SB performance and you will see why:
http://forum.coolaler.com/showthread.php?t=240578
Performance is inline with what is on the market right now. If you extrapolate the data, SB may be 1-2% faster at most at CPU heavy tasks.
SB is not worth getting if all you want is performance. However, if you're looking for better efficiency and more features, only then is it worth taking a look IMO. Intel's Nehalems will be neck and neck with the SB cpus two years from now in terms of performance.
Of course Nehalem/Westmere will still be incredibly powerful as far as CPU performance goes after Sandy Bridge is released, but it will no longer have the latest technology, and we're talking about groundbreaking things like USB3, SATAIII, LightPeak and PCI Express 3.0 (which both doubles the bandwidth over 2.0 and has many more lanes per CPU, giving you more PCI Express ports in the computer), where we'll eventually have devices and cards that require these ports. Wouldn't you rather have a computer that contains these ports? Anyone who doesn't at least look over the implications of buying now versus waiting is foolish. This is a completely new architecture right around the corner, with multiple new standards technologies, things that will just be in more and more demand as modern devices are released that will require USB3, SATAIII, LightPeak or PCI Express 3.0. It's your money and I'm not saying you shouldn't buy a Westmere Mac now. Re-read the last portion of the 1st post, where you see the different scenarios, and you'll see that I said it's perfectly fine to buy a Westmere now as long as you know what you're getting into. And yes, Apple had early access in 2009; check post #28 here, the last paragraph, for more on that.
You misread the portion you quoted; I said "Sandy Bridge is a big deal and will bring loads of the latest technology; whereas Westmere is just a Nehalem that has been reduced in size (giving them slightly better performance and allowing them to fit more cores inside each processor).". The important word is in the portion you yourself quoted: "and".I was talking about performance per-core only being "slightly better"; in other words, the die-shrink leads to slightly more effective electrical paths giving slightly better performance per-core AND the reduced size ALSO allows more cores per processor.
Now, when it comes to technology; as mentioned in my reply to chrmjenkins in this post (above the reply to you), Sandy Bridge brings very important new technology that will eventually be required by devices, and then your Nehalem/Westmere will officially be obsolete. That is why post #1 of this thread talks about the different scenarios we're all going to have to face, and just wants to inform people so that everyone can make the call on what they want to do. For a more elaborate reply on this technology-point of what Sandy Bridge brings, see the reply to chrmjenkins in this very post.
Lastly, regarding "we never know when Apple will use them", that is a non-issue, see the last paragraph of post #28 here.
IMO, for professionals looking for more performance, Sandy Bridge is irrelevant. Look at this sneak peak of SB performance and you will see why:
http://forum.coolaler.com/showthread.php?t=240578
Performance is inline with what is on the market right now. If you extrapolate the data, SB may be 1-2% faster at most at CPU heavy tasks.
SB is not worth getting if all you want is performance. However, if you're looking for better efficiency and more features, only then is it worth taking a look IMO. Intel's Nehalems will be neck and neck with the SB cpus two years from now in terms of performance.
There are alreay westmere boards that have sata 3, usb3, 7 pci-e 16 lane slots etc already. Pci e 3 boards are right around the corner.
Question about lightpeak: will there be a way to get lightpeak to older mac pros when it becomes available?
How is that? Sandy Bridge doesn't that much if any software support like adding cores do. Nehalem provided up to 30% better performance than Core architecture did.
For example in this benchmark, the 2.5GHz SB beats 3.33GHz i7. Power efficiency means better performance because more cores and faster clocks can be used
Dual and Quad-Core low-end models come first, before 6-core and 8-core high-end models in Q2 2011. It still begs the question though: Why get Westmere now? Remember that Westmere is just a "tick" 32nm die-shrink of Nehalem with two more cores in (for a total of 6) in the highest-end CPUs. Why not wait for the "tock" (new architecture) in Q2 2011 and get USB3, LightPeak, SATA3, PCI Express 3.0 (twice the bandwidth), native support for 1600 MHz RAM, 8 cores, and the higher performance of the new architecture?
Sandy Bridge is imminent, in the near future, and will bring no less than FOUR entirely new standards and evolutions (USB3, SATAIII, PCI Express 3.0 and LightPipe), which will make all of today's computers obsolete, as these new technologies and ports will be required by more and more modern devices as time goes on.
"Intel has designed a prototype PCI Express card for desktop PCs as an add-on. This would mean many people wouldn't need to buy a new motherboard for the new cable type. The card has two optical buses powering 4 ports. Note that such a card might not be able to keep up with the 40Gbit/s bandwidth of four Light Peak ports. Most desktop motherboards in 2010 have one or more PCIe 16x slot and a few PCIe 1x slots and a few Standard PCI slots. A PCIe 1x slot is limited to 4Gbit/s; a PCIe 16x slot would be enough"
As for Lightpeak, I believe it is useless especially among the growing USB 3 and eSata markets. If you don't believe that, then you're still in luck. Read this:
Thoughts? Am I crazy?
Link please.Eidorian: See reply #56. USB3+SATAIII will be provided by Intel for OEM's as an all-in-one chip...
Link please.
Our sources here in Taipei tell us that Intel has no plans to integrate USB 3 into its chipsets until 2012 at the earliest - there are no new platforms due this year, and next year's roadmaps currently show none featuring USB 3. Apparently Intel plans to make a USB 3/SATA 6Gbps all-in-one chip for optional use by motherboard manufacturers on its products, however it’s currently finding it difficult to get the pin-count down to an appropriate size.
Icaras: LightPeak is something you would have in addition to USB3 and SATA III; and is meant for connecting super high resolution screens, networking, storage, etc, basically anything that benefits from huge bandwidth. It offers a massive amount of bandwidth and will be excellent for a lot of purposes. It all travels over one, tiny cable as well.
I'm well aware of Lightpeak, but my question was whether it will mimic how HDMI, DVI, DP, and mDP behave with one another in that you can easily adapt between different types of cables.
Ahh I suspected that you meant that from your wording. Nope, it's an entirely new connector that uses an optical signal rather than electricity.
It's possible that some manufacturer will release some box that connects to LightPeak and sends out a DVI/HDMI/DP/mDP signal, although that would be in the far-far-far future if the day comes when LightPeak is all there is on the computer and you need to connect some old monitor.![]()
Hmm, but you can currently change an optical cable into a mini 1/8" digital cable just via a very simple small adapter on the connector itself. Why couldn't we expect that with Lightpeak? Going from lightpeak to USB, Firewire, DVI, HDMI, DP, mDP, etc. via a simple adapter?
You've only reinforced my point.http://www.guru3d.com/news/intel-not-planning-usb-30-until-2012/
It appears that the quote comes from the April conference where Intel simultaneously announced Sandy Bridge's production date (Q4 2010). Note that "integrate into its chipsets" means building it right into their reference motherboards; they won't do THAT until 2012, but in the meantime they'll provide it to OEM motherboard manufacturers as an all-in-one USB3/SATAIII addon chipset.
I really need to go to bed now, hope there aren't more questions.![]()
I'll answer this, but it's the last question for the day.It seems as though you are thinking of typical digital S/PDIF audio connections in your example? Yes, most computers and audio interfaces offer both an electrical RCA plug AND a Toslink optical plug, allowing you to hook up digitally no matter which type of connector your audio receiver uses.
Well, that's all fine and dandy for something low-bandwidth like S/PDIF.
With LightPeak we are talking 10 Gbps for starters, and they are planning to scale it up to 100 Gbps. It's also mainly intended for high-bandwidth transfers like networking and super high resolution displays (with more pixels than the bandwidth of current display cables allows for). Current connectors for USB/FireWire/eSATA devices, audio or display connectors like DisplayPort/miniDisplayPort and DVI/HDMI are not going away, so this is a complete non-issue. Yes, eventually they plan to COMPLETELY replace ALL of our device connections with this single Optical wire, but that's in the far future. Initially its biggest use is likely to be networking.
So, why Optical?
Well, Intel chose an Optical transfer method due to the inherent problems with Electrical transfers; those being lower speeds, higher rates of errors and corruption, lower possible cable lengths, crosstalk between wires, and the fact that electrical transfers require DIFFERENT WIRE CONFIGURATIONS depending on what the protocol is. The last reason is why we have different cables for HDMI, DVI, DP, Audio, USB, FireWire, etc instead of a single cable for everything. That's because each electrical protocol needs its own collection of individual wires to transfer the data it needs.
With Optical, ALL of these problems go away and you can transfer as many protocols as you want at once over a single wire, since it's all sent digitally with an Optical connection. The fact that it is Optical is the reason that it is able to transfer so much data over a single tube. Electrical would never be able to do that and would require multiple wires to reach the same bandwidth. So if you wanted to make something called "ElectricalPeak" and transfer at 10 Gbps, you would have to design a cable with loads of wires in it, all designed for transferring data simultaneously (in parallel) over every wire in order to achieve the same 10 Gbps bandwidth that LightPeak gets over a single wire. And if you're going for LightPeak's upper limit of 100 Gbps with an electrical solution? Forget about it.LightPeak's Optical solution does all of that over a single wire, it makes no sense to stick to electrical cables anymore.
So, for all the reasons above, particularly the fact that we will still have all the old connectors on our computers for the foreseeable future, there will not be converters for existing types of connections like USB and FireWire. They are not competing, yet. Mainly because LightPeak devices require advanced circuitry to decode and pass through the light signals and therefore will initially be reserved for niche uses such as Networking and ultra resolution displays
Yes, eventually they plan to COMPLETELY replace ALL of our device connections with this single Optical wire, but that's in the far future. Initially its biggest use is likely to be networking.