pcie lanes

[XS86]

I am building a pc for live streaming events. I will have a total of 15 cameras in and 1 video feed out using 2 quad link 2. At this time with the way gpus are  the only card I have is a 970 for encoding purposes. my concern is that while running all the cameras and gpu at the same time the lack of pcie lanes of a normal cpu will cause issues. I plan on using a 2.5 ssd not a m.2.

should I go with a threadripper so that I have enough lanes?

quad link 2 -- 8x lanes

quad link 2 -- 8x lanes

970 -- 16x lanes

chipset -- 4x lanes? (unsure)

 

total pcie lanes 36

 

link to the quad link 2

https://www.bhphotovideo.com/c/product/1186263-REG/blackmagic_design_bdlkdvqd2_decklink_quad_2_8_channel.html

[jaslion]

Ok so you want to build a computer for this right? You don't have an existing one?

 

If so ryzen has 24 lanes in total but 16 are dedicated to the pcie slots the others are for storage, chipset,...

 

So the question here is do those quad link cards require an x8 link or not.

 

If they do then you'll need something else. Not even a high end threadripper but a threadripper platform would be adviced. Do keep in mind to AVOID first gen stuff and preferably immediately go for the 3000 series or newer.

[mariushm]

What motherboard will you be using?

That will tell you if it's doable or not. 

Some motherboards will take the x16 for video cards and allow you to split it into 2 x8 slots. Other motherboards don't

Some motherboards will disable the pci-e x4 slot or reduce it to x1 if you insert a m.2 ssd.

 

 

A Threadripper configuration would be the best, but would be pricy.  Threadrippers have up to 64 pci-e lanes. 

 

Those capture cameras have SDI inputs .. do you cameras have such outputs allowing you to use them directly with those capture cards?

 

Also, for live streaming events you'd probably also want to capture the output of the video cards the people are playing on (for example if you want to do speedruns or for replay games or scenes etc)

 

edit.  x570 motherboards will have 20 pci-e lanes from CPU  (16 to video cards / pci-e x16 or 2 pci-e x8 and 4 lanes to m.2 connector ) and 8-10 lanes coming from chipset. 

A few motherboards  offer  pci-e x16 OR 2 x pci-e x8 for video cards and a pci-e x8 from chipset, so you'd have 3 pci-e x8 slots. A lot of them only put 4 pci-e lanes in the slot that's connected to chipset. You'll have to read the specifications carefully.

 

You can plug a basic video card in one of the remaining pci-e x1 slots OR you could use an adapter to convert the M.2 to a pci-e x4 slot to insert a video card instead of a SSD.

 

[XS86]

5 minutes ago, jaslion said:

Ok so you want to build a computer for this right? You don't have an existing one?

 

If so ryzen has 24 lanes in total but 16 are dedicated to the pcie slots the others are for storage, chipset,...

 

So the question here is do those quad link cards require an x8 link or not.

 

If they do then you'll need something else. Not even a high end threadripper but a threadripper platform would be adviced. Do keep in mind to AVOID first gen stuff and preferably immediately go for the 3000 series or newer.

I am building this computer because the existing one does not have enough pcie slots for the 2 quad links. I am unsure if the quad links require 8x but on the spec sheet thats the only info I have on pcie. I was planning to go TR 1900x because I dont need much cpu power for the programs I run. heres the part list https://pcpartpicker.com/list/rKVmbh

[jaslion]

Just now, XS86 said:

I am building this computer because the existing one does not have enough pcie slots for the 2 quad links. I am unsure if the quad links require 8x but on the spec sheet thats the only info I have on pcie. I was planning to go TR 1900x because I dont need much cpu power for the programs I run. heres the part list https://pcpartpicker.com/list/rKVmbh

First gen threadripper just flat out SUCKS. Like it's just a bad experience using it. The 2000 series fixed a lot but a bunch of the random jank still stuck around and was not fixed till the 3000 series which finally worked like you'd expect a normal cpu would.

 

They are cheap for a reason because they are just awful and not stable at all. I do not recommend them one bit.

 

I am well aware the new ones are really expensive but at least the computer will work.

 

If you cannot spend that much money then your best bet will just be gambling on ryzen and seeing if those quad link cards function normally on a slower link.

[XS86]

9 minutes ago, mariushm said:

What motherboard will you be using?

That will tell you if it's doable or not. 

Some motherboards will take the x16 for video cards and allow you to split it into 2 x8 slots. Other motherboards don't

Some motherboards will disable the pci-e x4 slot or reduce it to x1 if you insert a m.2 ssd.

 

 

A Threadripper configuration would be the best, but would be pricy.  Threadrippers have up to 64 pci-e lanes. 

 

Those capture cameras have SDI inputs .. do you cameras have such outputs allowing you to use them directly with those capture cards?

 

Also, for live streaming events you'd probably also want to capture the output of the video cards the people are playing on (for example if you want to do speedruns or for replay games or scenes etc)

 

edit.  x570 motherboards will have 20 pci-e lanes from CPU  (16 to video cards / pci-e x16 or 2 pci-e x8 and 4 lanes to m.2 connector ) and 8-10 lanes coming from chipset. 

A few motherboards  offer  pci-e x16 OR 2 x pci-e x8 for video cards and a pci-e x8 from chipset, so you'd have 3 pci-e x8 slots. A lot of them only put 4 pci-e lanes in the slot that's connected to chipset. You'll have to read the specifications carefully.

 

You can plug a basic video card in one of the remaining pci-e x1 slots OR you could use an adapter to convert the M.2 to a pci-e x4 slot to insert a video card instead of a SSD.

 

asrock taichi x399 is what I was planning on using. 

I am not using it for gaming. Im building this computer for live events and the cameras have sdi outputs so no conversion is necessary.

 

list of parts i was planning

https://pcpartpicker.com/list/rKVmbh 

[XS86]

3 minutes ago, jaslion said:

First gen threadripper just flat out SUCKS. Like it's just a bad experience using it. The 2000 series fixed a lot but a bunch of the random jank still stuck around and was not fixed till the 3000 series which finally worked like you'd expect a normal cpu would.

 

They are cheap for a reason because they are just awful and not stable at all. I do not recommend them one bit.

 

I am well aware the new ones are really expensive but at least the computer will work.

 

If you cannot spend that much money then your best bet will just be gambling on ryzen and seeing if those quad link cards function normally on a slower link.

Threadripper 2970WX do you know what issues I would run into with this?

[jaslion]

2 minutes ago, XS86 said:

Threadripper 2970WX do you know what issues I would run into with this?

Windows just doesn't handle it's thread scheduling well as it was made differently to how they made the 3000 series so you can often not even get half the performance you payed for.

 

The 2000 series was at least stable BUT due to how they were designed with their chiplets windows does not do a great job with it and you can experience wildly different performance.

[XS86]

4 minutes ago, jaslion said:

Windows just doesn't handle it's thread scheduling well as it was made differently to how they made the 3000 series so you can often not even get half the performance you payed for.

 

The 2000 series was at least stable BUT due to how they were designed with their chiplets windows does not do a great job with it and you can experience wildly different performance.

could I disable several cores so it will work better? 

I'm currently using a i7 6700. while live streaming cpu usage doesn't go above 20%.

My current motherboard only has one pcie slot so I cant try the quad links on that pc.

[XS86]

@jaslion another option should I go with zeon?

[jaslion]

Just now, XS86 said:

@jaslion another option should I go with zeon?

Depends on which you get but most will be extremely expensive going new.

 

Since the 6700k is barely being used that threadripper will do fine then.

[XS86]

27 minutes ago, jaslion said:

Depends on which you get but most will be extremely expensive going new.

 

Since the 6700k is barely being used that threadripper will do fine then.

Thank you