How many PCIE devices (x1 risers) can I run on MSI Gaming 5 Mobo?

[chriscambridge]

** CORRECT ANSWER IS MY LAST POST AT THE END OF THIS THREAD **

Hi Forum,

I bought a MSI Gaming 3 which has two PCIE x16 slots and two PCIE x1 slots - so four in total.

However the manual says you can only run two PCIE x16 devices, or one PCIE x16 and two PCIE x1 devices - which is obviously three.

Therefore I am now considering getting a MSI Gaming 5 instead as it has 6 PCIE Slots. (four x1 and two x16 slots).

Does someone (who has the manual or specifically knows), know how many devices you can run from the PCIE slots?

I am doing BOINC Data processing so I will be using this for the following GPU Rack (which uses x1 to x16 PCIE Risers). So any PCIE slot is good, at any speed.

Thanks for any advice on this MSI Gaming 5 Motherboard.

Chris

 

[junkeymonkey]

The PCIe layout of the motherboard uses x16, x8/x8 and x8/x4/x4 when the full length slots are in use, with four x1 PCIe slots from the chipset added in for good measure. Note that if a device is installed into the bottom PCIe slot then SLI will not work, as the first two main PCIe slots will then run at x8/x4, and SLI needs x8/x8 minimum to work.

http://www.anandtech.com/show/8582/msi-z97-gaming-5-motherboard-review-five-is-alive

you can use them all but you have to start sharing of pcie lanes the slots only have 16 from the cpu divided up

one card / device on it is x16 or 8x4x4 or 8x8 ??

then the slots that run off the chipset same thing as you see from the chart

http://www.intel.com/content/www/us/en/chipsets/performance-chipsets/z97-chipset.html

then spacing ?? put a card in a slot that may block slots and then cant be used anyway ??


look at motherboards that have a ''PLX'' chip that sounds like more of what you need for multi slot devices ??

kinda old but gives a idea

Conclusion: PLX 8747 and Multi-GPU Setups

http://www.anandtech.com/show/6170/four-multigpu-z77-boards-from-280350-plx-pex-8747-featuring-gigabyte-asrock-ecs-and-evga/31


thing is if the device need 8x and you got slots filled and got that cut down to x4 ??

with intel the manufacture can decide on how the slots are wired and shared all you can count on it the one primary slot will never fall below x8 [ main single gpu card slot ]


now AMD is all through the chipset you start with like 42 lanes and share down and why like with 2 cards they can stay at 2 full x16 with out affecting the rest of the minor slots as dramatic

''Two of the PCI Express x16 slots (PCIE2 and PCIE3) always work at x16 speed, and the other slot (PCIE5) works at x4. ''
Read more at http://www.hardwaresecrets.com/asrock-fatal1ty-990fx-killer-motherboard/2/#yvmzEhVOBmYHRD0c.99


or move up to a intel ''X'' board with a 40 lane CPU ? [and then a plx chip on top of that ]

Socket LGA2011-v3 processors have a maximum of 40 or 28 PCI Express 3.0 lanes for video cards
Read more at http://www.hardwaresecrets.com/asrock-x99-extreme63-1-motherboard/2/#0Ytl2PKogmczk4Vo.99

then the catch 22's you may find on some boards ?/

There is also a PCI Express 2.0 x4 slot and one PCI Express 2.0 x1 slot. The PCI Express 2.0 x4 slot shares bandwidth with one of the SATA Express connectors, two USB 3.0 ports, and the PCI Express x1 slot; if a PCI Express x4 card is installed, all of those features will be disabled. If a PCI Express x1 or x2 card is installed, only the SATA Express interface is disabled.
Read more at http://www.hardwaresecrets.com/asus-rampage-v-extreme-motherboard/2/#jUVp6xzUSwb7EpI0.99

When installing dual-slot video cards, you “kill” the slot immediately to the left of the slot being used (looking at the motherboard with its rear connectors facing up). This means that you can’t install a dual-slot video card in the second (PCIE3) PCI Express x16 slot, because otherwise you will block the third (PCIE4) slot, which is faster than the second. Therefore, even though this motherboard has four PCI Express x16 slots, only three of them can be used with dual-slot video cards.
Read more at http://www.hardwaresecrets.com/asrock-990fx-extreme9-motherboard/2/#GcGqFRhVckSidTbA.99


a lot to look at and over when selecting a board to cover all your needs seems like a good place to ask this is at a mining site where guys load up gpu's to do bit-coin mining that would know just what to look at

 

[chriscambridge]

I asked you to take a look at this question, not for you to jut cut and paste your original answer, as clearly it makes NO sense it this context.

Why are talking about full slot devices or double width cards, when I have said I am using a x1 riser?

Why are talking about about SLI when I told you that I am doing data processing?

Why are talking about the PCIE lanes, when ark.intel clearly explains the PCIE lanes of each chip, including 16 that i7, and the 40 that Xeon CPUs, have?

Indeed why are you even mentioning different PCIE sized slots or speeds, when I have already said that 'we are using x1 risers, any slot or speed is fine".

In case you missed this from the original post:

"Does someone (who has the manual or specifically knows), know how many devices you can run from the PCIE slots?"

 

[junkeymonkey]

boo hoo

you did see this ??

Please Do Not Ask Me For Help Via PRIVATE MESSAGE, unless I've answered to your posted thread .... Thank You

I hope the next guy that don't answer to your satisfaction takes you bashing his help better then me ?

1 slot = 1 device or as many you can rig up with out exceeding the bandwidth , what you do over that I assume is all your own risk

http://www.hardwaresecrets.com/everything-you-need-to-know-about-the-pci-express/

http://superuser.com/questions/393588/can-i-use-a-pci-e-x16-slot-for-multple-cards

http://setiathome.berkeley.edu/forum_thread.php?id=70653

then figure slot power like a pci-e slot provides 75w so you try to run 2 60w card on it ??? so that 75w slot is going to power 120w 's worth of cards ???

in the end you do as you feel is best for you spend your money and test and see

just sees to me you better served with a single powerful comput card like NVidia tesla [The Tesla P40 and P4 deliver over 30x faster inference performance compared to CPU for real-time responsiveness ] - See more at: http://www.nvidia.com/object/data-center-solutions.html#sthash.mSnuwgj4.dpuf

http://www.nvidia.com/object/what-is-gpu-computing.html

good luck

 

[chriscambridge]

Wow you have not got a clue..

Do you even run GPUs eg Graphic Cards? There are no decent modern GPUs that can run just off the 75w from the PCIE! All require either a 6 or 8, or both, PSU pins to draw power normally over 150w. That is why we use modular PSU's such as Corsair RM850x.

1 slot = 1 device?

Is that what you think? Is MSI wrong when they say you can only run 3 devices in 4 PCIE slots? Like I said, I think MSI know more about their MB than you.

In term of PCIE lanes; Clearly if I knew EXACTLY what component of the MB was using which and how many PCIE Lanes, AND I knew Exactly what each PCIE slot was able to downgrade to, then I could work out exactly what can be run. The last time I checked that information is not available.

just sees to me you better served with a single powerful comput card like NVidia tesla

Tesla? Yawn. Did I say I was doing Deep Learning AI inference processing? Nope. I think you will find, if you bother to check the GPU stats at most BOINC GPU projects, that a GTX 1080 or Pascal Titan are the most powerful card out there in terms of BOINC processing. Also why would I spend Thousands on a least powerful Tesla, when I could by many 1080's/Titans for the same cost?

In truth, less googling, more studying I think may be in order! Anyway, thank you so much for your help, it has been most enlightening.

 

[chriscambridge]

The answer to my original question, will the Gaming 7 Mobo allow me to run 7 GPUs, is No.

--

In case anyone else is looking to run 6 GPUs from a LGA 1150 Mobo, you need to be pretty careful as most won't allow you to run cards in *ALL the slots even if you have 6 PCIE slots actually present on the Mobo.

After doing much research on what the Bitcoin Miners are using in 2016, the best LGA 1150 (i7's etc) Mobo's to use which you can *definitely run 6 GPUs are:

Asrock H81 Pro BTC

Asrock H97 Anniversary

Please note that to use more than 3 cards you will need to plug two 4pin molex cable into the PCIE power connectors on the Mobo. (as well as obviously 6/8 pin PSU leads into each the cards).

To run 6 GPUs you will also need Windows 8.1+ as lesser versions cannot run 6 cards; I am not sure about Linux.