SXM2 over PCIe
- Thread starter CyklonDX
- Start date
Notice: Page may contain affiliate links for which we may earn a small commission through services like Amazon Affiliates or Skimlinks.
OK Thanks a lot! I checked the device I bought, it's Aom-sxmv, it scared me for a moment!
I have a question. Since there is an Oculink connection on this GPU board, what are the two PCIe interfaces on it for? connect to motherboard pcie?
The PLX bridges are only visible over AOM-SXM-BRG connection.
@MildHotSauce hopefully can share his setup and thoughts in near future.
Thanks
Will this device work properly if I connect these SFF 8611 links to the PCIe interface on the motherboard, insert a V100, and connect four power sources?
I bought the wrong connector wire. It should have been SF8611, but I accidentally bought SF8654 instead. That's why I'm asking.
Thanks!!!
You need to connect either side or both (depending where the GPU's are connected). (purple or lime)
SXM2 to PCIe for NVidia P100 and V100 GPUs Adapter - Engineering Sample | eBay
Find many great new & used options and get the best deals for SXM2 to PCIe for NVidia P100 and V100 GPUs Adapter - Engineering Sample at the best online prices at eBay! Free shipping for many products!
www.ebay.com
Interesting item. Other than being far too expensive for what it is, what do you lose by only having one of the SXM2 connectors on board rather than the two connectors on the GPU modules? 2x6-pin also seems like not enough power supply for most SXM cards in this class.
What wattage is your power supply? I seem unable to start without inserting the V100 using a 1250W power supply.
You need to connect either side or both (depending where the GPU's are connected). (purple or lime)
Servers come in with 2kW PSU's and support up to 4 v100's.
I know that @MildHotSauce used ASUS Z790-P, not sure what PSU he used. He managed to get this working.
(I have some images of his setup, but i won't share unless he confirms its ok - but would be better if he posted them on his own.)
I think 1250W should be fine for 2 x V100's.
I know that @MildHotSauce used ASUS Z790-P, not sure what PSU he used. He managed to get this working.
(I have some images of his setup, but i won't share unless he confirms its ok - but would be better if he posted them on his own.)
I think 1250W should be fine for 2 x V100's.
After connecting the wires this way, the motherboard cannot detect the AOM-SXMV. I am not sure whether the GPU or the motherboard is faulty, or if there is a compatibility issue. Do I need the AOM-SXM-BRG? Can you help me identify the problem?
Attachments
I used PCIe cables for power connection, but I changed the wiring sequence, and I also tried swapping the order of the two PCIe data cables going to the PCIe slot on the motherboard. However, it didn't work, as the motherboard couldn't detect any device connected to the single PCIe interface.
So I'm confused. Could it be that the GPU or motherboard was damaged before changing the power cables?
GPU borad power supply,
PCIE 8Pin power supply,I swapped the wire sequence.
Before swapping the wire sequence, I attempted to power on the system but it did not boot up. I am concerned that this may have damaged the GPU motherboard.
where heatsink at? | and you didn't connect your pcie port... (the lack of bridge pcie port won't prevent you from booting the system - but you will need it -ex. you can use this sc raiser SUPERMICRO RSC-G-6 to connect that pcie with your motherboard pcie)
the power connectors should be your 12V 8-pin GPU power supply connectors. (std pcie connectors)
Last edited:
agree on the lack of heatsink, but I’m a little confused by what you mean about the bridge connectors being required. The first few posts in this thread seem to be saying that the whole idea of this is to circumvent those connectors completely (you said they kept dying, leading you to use the oculink ports instead). Is that not correct?
if the bridge connections are truly required and you can’t use the cable connections solely, this seems like a non-starter for getting this board on a different system. Those bridge connections, while electrically look to be PCIe, are physically non-standard and I don’t think an adapter for them exists. Unless you can link to one. if you mean for the SUPERMICRO RSC-G-6 you referenced to accomplish this, it wont physically fit on the AOM-SXMV. it will impinge on the GPUs.
and the manual seems to indicate that the power connections are 12V EPS (CPU) connections. not standard VGA PCIe connections (based on the pinout). enterprise GPUs tend to use EPS connectors (4x 12v, 4x gnd) not the PCI connectors (3x 12v, 5x gnd, flipped orientation)
Last edited: