NVME drive

[Nylander]

Hey

I have a x99 motherboard with a i7 5820k cpu. I have 2 gtx 980ti

Do i have enough pcie lanes to install a m.2 pcie 3,0 x4?

[zMeul]

the m.2 PCIe drives use lanes from the PCH (X99), not from CPU

[SmashinMachine]

18 minutes ago, zMeul said:

the m.2 PCIe drives use lanes from the PCH (X99), not from CPU

Where did you read that?

It is only in skylake so how you say

X99 pch supports only  pcie gen2 with DMI2.0.

there is a switch between pch, m2 and the last pcie slot

That means if you use sata express or m2 sata, the lanes come from PCH. If you use NVMe ssd or pcie ssd, the lanes come from CPU.

Your CPU has 28 Lanes, you will not able to use threeway SLI

But you have enough lanes to install pcie SSD

This means if you use SLI, your 1. GPU run @x16 your second GPU run @x8 and you have left 4 lanes for the last pcie slot (m.w SLot).

 

The last pcie Slot shares Bandwith with m2. When m.2 SLot is occupied with pcie m2 SSD, the last pcie Slot is disabled because of using the Lanes from CPU.

[Nylander]

Thanx i just was a little conserned due to the 28 pcie lanes :-)

[SmashinMachine]

No problem, you're welcome

[zMeul]

7 hours ago, SmashinMachine said:

Where did you read that?

I do not know where you got that, must be a mobo with added PCIe lane switch

 

but Intel's official block diagram lists (all) storage being linked to the PCH:

 

le: yes, that's a MSI custom implementation: http://www.anandtech.com/show/8557/x99-motherboard-roundup-asus-x99-deluxe-gigabyte-x99-ud7-ud5-asrock-x99-ws-msi-x99s-sli-plus-intel-haswell-e

Quote

Alternatively, some manufacturers are taking advantage of the CPU lanes and using four of these for an M.2 slot, as shown in this MSI chipset diagram:

 

[Mark77]

LGA2011 platforms have crazy numbers of PCI-E lanes compared to the LGA115x platforms.  NVMe SSDs work just fine on the LGA115x platforms, so not a problem on LGA2011 platforms from that perspective.  Firmware support for booting may very well be the issue if you want to use a PCI-E SSD as a boot device.

 

People get way, way too caught up on PCI-E lanes.  Only relevant, really, if you're running a server that needs crazy I/O. 

[SmashinMachine]

26 minutes ago, zMeul said:

I do not know where you got that, must be a mobo with added PCIe lane switch

 

but Intel's official block diagram lists (all) storage being linked to the PCH:

 

le: yes, that's a MSI custom implementation: http://www.anandtech.com/show/8557/x99-motherboard-roundup-asus-x99-deluxe-gigabyte-x99-ud7-ud5-asrock-x99-ws-msi-x99s-sli-plus-intel-haswell-e

 

That diagramm was by way of illustration... You have no Idea.,..

The last PCIe  bound with CPU LANES in X99 and shares the lanes with m.2 SLOT for PCIe SSD. That means THere is a switch between them in ASUS, GIGABYTE, MSI and all other boards.

That is not a custom implementation of MSI.

M.2 Slot use CPU Lanes, that is the fact in X99 Boards

This motherboards would feature the M.2 slot only with a data transfer speed up to 10 Gb/s if m.2 Slot would use the PCH Lanes. 

Here is one another illustration from an ASUS MB with proof

GOt it????

 

[zMeul]

6 minutes ago, SmashinMachine said:

GOt it????

you did not get it

those PLX PCie lane switches are not there in the Intel's designs - they were put there by each manufacturer, each in it's own implementation

 

got it?!

[SmashinMachine]

Just now, zMeul said:

you did not get it

those lane switches are not there in the Intel's designs the were put there by each manufacturer, each in it's own implementation

 

got it?!

hopeless....

[zMeul]

1 minute ago, SmashinMachine said:

hopeless....

indeed you are

[SmashinMachine]

2 minutes ago, zMeul said:

you did not get it

those lane switches are not there in the Intel's designs the were put there by each manufacturer, each in it's own implementation

 

got it?!

Here from WIKI

https://en.wikipedia.org/wiki/Intel_X99

[SmashinMachine]

2 minutes ago, zMeul said:

indeed you are

If i find a intel documentation about it, will you give up???

[zMeul]

3 minutes ago, SmashinMachine said:

Here from WIKI

https://en.wikipedia.org/wiki/Intel_X99

yes, yes .. quote me wiki as source

 

 

https://www.broadcom.com/products/pcie-switches-bridges/pcie-switches/

[SmashinMachine]

18 minutes ago, zMeul said:

yes, yes .. quote me wiki as source

 

 

https://www.broadcom.com/products/pcie-switches-bridges/pcie-switches/

Do you Just believe that m.2 use Lanes from PCH or what???? 

Where is the m.2 Slot in Intel's official block diagramm??

You have no idea and you give the people wrong information...