NVLink Bridge for Quadro RTX 5000

[BikSap]

I need Help with choosing x8 or x16 Sli Bridge For Quadro RTX 5000

As you may know that the Bridge for RTX 5000 is different from Other Quadro RTX. So I cannot use any other bridge for RTX 5000.

After some research, I purchased this Item "Nvidia Quadro RTX x8 NVLink Bridge 3-slot" from Newegg (https://www.newegg.com/p/1DW-000D-000F2?Description=x8%20nvlink%20bridge&cm_re=x8_nvlink_bridge-_-9SIAJCJAPC7894-_-Product&quicklink=true)

I purchased this because it is a 3 Slot bridge so I can use it in the two x16 PCIe slot. I was confused why the title say " x8 ". I installed it, however, I am not seeing any performance increase. In fact it sometimes fails to boot. I have to reset BIOS for it to work.

My question is:

Is there something called x8 and x16 NVLink Bridge (Not the PCIe slot but the Bridge)

I am asking this because there is another NVLink bridge available. Such as this 

https://www.bhphotovideo.com/c/product/1477730-REG/hp_6fy14aa_quadro_rtx_nvlink_3_slot.html/?ap=y&smp=y&lsft=BI%3A514&gclid=CjwKCAjw1cX0BRBmEiwAy9tKHn79J2-gluXqzcdgdEJyziK2LK-UNxmYO6nEzj7AhVz6Dp7-r6g_8xoCUzAQAvD_BwE

 

This does not say whether it is x8 like my previous purchase. And this is around $100 more.  Is this a x16 Bridge?, and Can I use it to bridge 2 RTX 5000 mounted in x16 PCIe slots?

 

Someone explain to me, what is the deal with NVLink Bridge for Quadro RTX 5000.

 

--- 

 

 

[Jurrunio]

You should be using the shorter one (which are the ones linked above) rather than the long ones, I dont understand x8 or x16 but I assume that's talking about their length which you need x8.

 

11 minutes ago, BikSap said:

I installed it, however, I am not seeing any performance increase

In what? NVLink is not SLI, it wont bring performance increase in tasks that use SLI

[BikSap]

Thank you Jurrunio for your suggestion.

I want to use the 3 slot bridge because it will let the air flow between the GPUs (2 slot will have GPUs almost touching each other)  Also, definitely want to use x16 PCIe slots. 

In my opinion, x8 bridge is to connect PCI_E3 and PCI_E5 which are x8 slots.

I am using MSI x399 Creation board with below mentioned PCIe structure.

PCI_E1: PCIe 3.0 x16

PCI_E2: PCIe 2.0 x1

PCI_E3: PCIe 3.0 x8

PCI_E4: PCIe 3.0 x16

PCI_E5: PCIe 3.0 x8

Just my opinion.

[ketchupspill]

3 hours ago, BikSap said:

I need Help with choosing x8 or x16 Sli Bridge For Quadro RTX 5000

As you may know that the Bridge for RTX 5000 is different from Other Quadro RTX. So I cannot use any other bridge for RTX 5000.

After some research, I purchased this Item "Nvidia Quadro RTX x8 NVLink Bridge 3-slot" from Newegg (https://www.newegg.com/p/1DW-000D-000F2?Description=x8%20nvlink%20bridge&cm_re=x8_nvlink_bridge-_-9SIAJCJAPC7894-_-Product&quicklink=true)

I purchased this because it is a 3 Slot bridge so I can use it in the two x16 PCIe slot. I was confused why the title say " x8 ". I installed it, however, I am not seeing any performance increase. In fact it sometimes fails to boot. I have to reset BIOS for it to work.

My question is:

Is there something called x8 and x16 NVLink Bridge (Not the PCIe slot but the Bridge)

I am asking this because there is another NVLink bridge available. Such as this 

https://www.bhphotovideo.com/c/product/1477730-REG/hp_6fy14aa_quadro_rtx_nvlink_3_slot.html/?ap=y&smp=y&lsft=BI%3A514&gclid=CjwKCAjw1cX0BRBmEiwAy9tKHn79J2-gluXqzcdgdEJyziK2LK-UNxmYO6nEzj7AhVz6Dp7-r6g_8xoCUzAQAvD_BwE

 

This does not say whether it is x8 like my previous purchase. And this is around $100 more.  Is this a x16 Bridge?, and Can I use it to bridge 2 RTX 5000 mounted in x16 PCIe slots?

 

Someone explain to me, what is the deal with NVLink Bridge for Quadro RTX 5000.

 

--- 

 

 

okay so im a lil comfused. so you bought a x8, and it works fne, right, then why do you want a x16?

 

also NVLink is different from SLI, SLI is utilizing 2 cards to do the same work, and NVlink is different from that.

[BikSap]

Hi Ketchupspill,

Thank you for taking the time to reply to my post.

I believe the NVLink and SLI is essentially have the same characteristics except for one is generic bridge and another is a bridge made my Nvidia.

What I needed help with is that I have two Quadro cards and a Motherboard which has 2 x16 PCIe slots. I would like to harness the power of Quadro using both x16 slots.  I am not able to decide which is the right SLI connector/NVLink Bridge to connect 2 RTX Quadro 5000 respectively mounted in 2 x16 PCIe slots. Now I am using 2 slot bridge which connects x16 and x8 PCIe slots. So it is only strong as the weakest link. That means, It is only using 8 lanes. That means, It is not any better than using OnesSingle Quadro mounted in one X16 Slot(PCI_E1).

Hope this will shed light on my understanding of the subject matter, thus my conundrum.

Any kind of input regarding this topic is appreciated.

 

[Fasauceome]

Gotta use the quote button so we can see your responses, or use @Jurrunio

[BikSap]

16 hours ago, ketchupspill said:

okay so im a lil comfused. so you bought a x8, and it works fne, right, then why do you want a x16?

 

also NVLink is different from SLI, SLI is utilizing 2 cards to do the same work, and NVlink is different from that.

Hi Ketchupspill,

Thank you for taking the time to reply to my post.

I believe the NVLink and SLI is essentially have the same characteristics except for one is generic bridge and another is a bridge made my Nvidia.

What I needed help with is that I have two Quadro cards and a Motherboard which has 2 x16 PCIe slots. I would like to harness the power of Quadro using both x16 slots.  I am not able to decide which is the right SLI connector/NVLink Bridge to connect 2 RTX Quadro 5000 respectively mounted in 2 x16 PCIe slots. Now I am using 2 slot bridge which connects x16 and x8 PCIe slots. So it is only strong as the weakest link. That means, It is only using 8 lanes. That means, It is not any better than using OnesSingle Quadro mounted in one X16 Slot(PCI_E1).

Hope this will shed light on my understanding of the subject matter, thus my conundrum.

Any kind of input regarding this topic is appreciated.

 

[BikSap]

3 hours ago, Fasauceome said:

Gotta use the quote button so we can see your responses, or use @Jurrunio

 

20 hours ago, Jurrunio said:

You should be using the shorter one (which are the ones linked above) rather than the long ones, I dont understand x8 or x16 but I assume that's talking about their length which you need x8.

 

In what? NVLink is not SLI, it wont bring performance increase in tasks that use SLI

Hi Ketchupspill,

Thank you for taking the time to reply to my post.

I believe the NVLink and SLI is essentially have the same characteristics except for one is generic bridge and another is a bridge made my Nvidia.

What I needed help with is that I have two Quadro cards and a Motherboard which has 2 x16 PCIe slots. I would like to harness the power of Quadro using both x16 slots.  I am not able to decide which is the right SLI connector/NVLink Bridge to connect 2 RTX Quadro 5000 respectively mounted in 2 x16 PCIe slots. Now I am using 2 slot bridge which connects x16 and x8 PCIe slots. So it is only strong as the weakest link. That means, It is only using 8 lanes. That means, It is not any better than using OnesSingle Quadro mounted in one X16 Slot(PCI_E1).

Hope this will shed light on my understanding of the subject matter, thus my conundrum.

Any kind of input regarding this topic is appreciated.

[BikSap]

3 hours ago, Fasauceome said:

Gotta use the quote button so we can see your responses, or use @Jurrunio

Hi @Jurrunio

Please check these product links and see if they are same product.

https://www.newegg.com/p/1DW-000D-000F2?Description=x8 nvlink bridge&cm_re=x8_nvlink_bridge-_-9SIAJCJAPC7894-_-Product&quicklink=true

 

AND

 

https://www.bhphotovideo.com/c/product/1477730-REG/hp_6fy14aa_quadro_rtx_nvlink_3_slot.html/?ap=y&ap=y&smp=y&smp=y&lsft=BI%3A514&gclid=Cj0KCQjw-Mr0BRDyARIsAKEFbefkFU-ri0OCUSiYSJZRLzbXwzGgKG6wrcK9pIw1DwJfe6d13H3qhwMaAvOMEALw_wcB

 

Thank you.

 

20 hours ago, Jurrunio said:

You should be using the shorter one (which are the ones linked above) rather than the long ones, I dont understand x8 or x16 but I assume that's talking about their length which you need x8.

 

In what? NVLink is not SLI, it wont bring performance increase in tasks that use SLI

 

[BikSap]

17 hours ago, ketchupspill said:

okay so im a lil comfused. so you bought a x8, and it works fne, right, then why do you want a x16?

 

also NVLink is different from SLI, SLI is utilizing 2 cards to do the same work, and NVlink is different from that.

Hi @ketchupspill

Please check these product links and see if they are same product.

https://www.newegg.com/p/1DW-000D-000F2?Description=x8 nvlink bridge&cm_re=x8_nvlink_bridge-_-9SIAJCJAPC7894-_-Product&quicklink=true

 

AND

 

https://www.bhphotovideo.com/c/product/1477730-REG/hp_6fy14aa_quadro_rtx_nvlink_3_slot.html/?ap=y&ap=y&smp=y&smp=y&lsft=BI%3A514&gclid=Cj0KCQjw-Mr0BRDyARIsAKEFbefkFU-ri0OCUSiYSJZRLzbXwzGgKG6wrcK9pIw1DwJfe6d13H3qhwMaAvOMEALw_wcB

 

Thank you.

[Jurrunio]

5 hours ago, BikSap said:

Hi @Jurrunio

Please check these product links and see if they are same product.

https://www.newegg.com/p/1DW-000D-000F2?Description=x8 nvlink bridge&cm_re=x8_nvlink_bridge-_-9SIAJCJAPC7894-_-Product&quicklink=true

 

AND

 

https://www.bhphotovideo.com/c/product/1477730-REG/hp_6fy14aa_quadro_rtx_nvlink_3_slot.html/?ap=y&ap=y&smp=y&smp=y&lsft=BI%3A514&gclid=Cj0KCQjw-Mr0BRDyARIsAKEFbefkFU-ri0OCUSiYSJZRLzbXwzGgKG6wrcK9pIw1DwJfe6d13H3qhwMaAvOMEALw_wcB

 

Thank you.

 

 

the MFR numbers are the same so they should be the same thing. I've checked other Nvidia products and those have different MFR numbers

[ketchupspill]

@BikSap

 

ah alright i think i get it. so if ur use a 16x and 8x bridge it only runs as fast as the 8x and therefore you only get 16x in totaal, but with 2 16x bridges you get a total of 32x right?

 

also to reinstate NVLink doesnt work like SLI to give performance boosts

[BikSap]

12 hours ago, ketchupspill said:

@BikSap

 

ah alright i think i get it. so if ur use a 16x and 8x bridge it only runs as fast as the 8x and therefore you only get 16x in totaal, but with 2 16x bridges you get a total of 32x right?

 

also to reinstate NVLink doesnt work like SLI to give performance boosts

 

12 hours ago, ketchupspill said:

@BikSap

 

ah alright i think i get it. so if ur use a 16x and 8x bridge it only runs as fast as the 8x and therefore you only get 16x in totaal, but with 2 16x bridges you get a total of 32x right?

 

also to reinstate NVLink doesnt work like SLI to give performance boosts

@ketchupspill

Exactly. Also I used 3 slot x8 NVLink from Newegg, and it did something strange. I used x8 bridge to connect 2 GPUs mounted in x16 PCIe slots and it stopped booting or it takes incredibly long to boot. Only way to work around it was to reset the BIOS everytime. So I removed the bridge. Nvidia technical support is no help at all.