Intel's 7th Gen Kaby lake CPU leaked "reportedly"Post Date: 2016-05-27 |
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Meller
DS Veteran Joined: 20 Feb 2013 Online Status: Offline Posts: 1627 |
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Topic: Intel's 7th Gen Kaby lake CPU leaked "reportedly" Posted: 27 May 2016 at 11:25am |
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Doc
Groupie Joined: 01 Jul 2008 Online Status: Offline Posts: 355 |
Quote Reply Posted: 29 May 2016 at 10:48am |
What is the difference between the Skylake processors/z170 motherboards and the X99/5960 combos?
I know the sky lakes are smaller architecture and newer,but they are less expensive suggesting, on some level, inferior? The 5960 is 8 core so I get that but the others in that line are still more expensive |
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Meller
DS Veteran Joined: 20 Feb 2013 Online Status: Offline Posts: 1627 |
Quote Reply Posted: 29 May 2016 at 11:19am |
Well, we need to take out size of die's here when we are comparing our x99 line of CPU's and z170 lines. It's actually better to work it in terms of socket and not chipset as there are multiple chipsets for the Socket 1151 cpus (those are our 6700k, 6600, etc..).
The Socket 2011-3 is what we call the enthusiast CPU's. While they are a generation behind the mainstream (socket 1151), they offer many things you won't find on the mainstream. Skylake introduced a new way of handling PCI lanes, along with the new take on the IMC (Internal Memory Controller). Skylake, for example, can only handle 28 lanes for the PCI. Meaning, you can only have a max of 3 video cards. Now the socket 2011-3 can handle up to 40 (I say up to because the cheaper 5820k 6c/12t cpu can only handle 28). Now, not everyone is going to be rocking 3 cards, hence why the mainstream is so appealing. It lets you still do a dual sli set up, but have lanes left over for m.2 NVMe PCI storage devices, sound cards, wireless card, or whatever else you need. Our Socket 2011-3, while supporting more PCI lanes, they also have better cache built into them (better imply they have more, not better quality). They can also, thanks to their IMC and the chipset, support more RAM than the z170. The 5930k and the 5960X support 40 Lanes and more cache, plus a few other subtle advantages such as better optimized multi-core performance. While the skylake series, while not offering the chance for quad sli GPU, still allow you to rock 2 GPU's, fast ass storage and up to 64GB of ram. There's a reason the 2011-3 is called enthusiast class. Because it provides you with the ability to build systems that have more power than we can actually use in the consumer world. Quad SLI is pointless, 128GB of ram is pointless, and high cache is pointless. Enthusiast class CPU's are really better tailored towards professionals who can utilize high ram and high core counts. There, for the most part, is really no true performance increase when comparing enthusiast to mainstream. Hopefully that's not too confusing. |
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Doc
Groupie Joined: 01 Jul 2008 Online Status: Offline Posts: 355 |
Quote Reply Posted: 29 May 2016 at 12:01pm |
Thanks Meller, quite helpful.
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Meller
DS Veteran Joined: 20 Feb 2013 Online Status: Offline Posts: 1627 |
Quote Reply Posted: 29 May 2016 at 12:11pm |
I try. ;) Thanks
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db188
DS Veteran Joined: 29 Jul 2014 Online Status: Offline Posts: 2115 |
Quote Reply Posted: 29 May 2016 at 2:26pm |
just to add onto what Meller said: by and large Skylake/Z170 is limited to 2-way SLI as there are only a couple of astronomically priced mobos capable of more than that on the market. it requires the use of a multiplexing switch, which ain't cheap. the same holds true for mobos with more than 1 or 2 m.2 pcie ports.
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Meller
DS Veteran Joined: 20 Feb 2013 Online Status: Offline Posts: 1627 |
Quote Reply Posted: 29 May 2016 at 2:58pm |
Have you seen the amount of 3 way SLI and 5 PCI device motherboards out now for z170? You'd be surprised. And I'm referring to motherboards in the $100-$200 range. Not including those $400+ motherboards.
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Quote Reply Posted: 29 May 2016 at 5:05pm |
There are many Z170 motherboards that claim 4-way SLI, but that is only through the use of dual GPU cards, the most recent being the Titan Z, which is now two generation old (The Titan Z has the PLX PCI-e switch on the board, whereas the $400+ Z170 boards that can support up to 4 GPUs have a PLX switch on them). Otherwise, using the single GPU cards, which are the vast, vast majority, they can only support up to two GPUs, split between the 16 PCI-e lanes from the CPU.
The mainstream processors have 20 PCI-e lanes, 4 of which are used for the DMI interface to the PCH...you can read more about this in my Configuring a Computer thread linked in my signature. |
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db188
DS Veteran Joined: 29 Jul 2014 Online Status: Offline Posts: 2115 |
Quote Reply Posted: 29 May 2016 at 7:20pm |
got me on the dual gpu cards, forgot about them since it's been so long since we've had a new one.
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db188
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Quote Reply Posted: 29 May 2016 at 7:32pm |
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Meller
DS Veteran Joined: 20 Feb 2013 Online Status: Offline Posts: 1627 |
Quote Reply Posted: 30 May 2016 at 2:31pm |
There is no performance loss between 16x and 8x. Most GPU's have been struggling to use up the complete 8x bandwidth to begin with.
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db188
DS Veteran Joined: 29 Jul 2014 Online Status: Offline Posts: 2115 |
Quote Reply Posted: 30 May 2016 at 4:25pm |
i agree with that, but i was referring to tri-sli with those $150-$200 boards you referenced. i might've missed some (very easy with all of the options) but most said 2-way Nvidia and 3-way AMD but speed would drop to x4 on the second or third card (depending on which mobo). you will see bandwidth issues with that, yes? |
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DS Veteran Joined: 28 Oct 2014 Online Status: Offline Posts: 1674 |
Quote Reply Posted: 30 May 2016 at 11:42pm |
If you use the motherboards that maintain x8/x8 with the third at x4, that x4 is going through the PCH, which add latency and traffic over the DMI link. x8/x4/x4 would all go straight to the processor.
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