Powered PCIe riser burned PCIe 1.1 slot?

PovertyByte

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Quote from: philipma1957 on March 12, 2017, 10:41:48 AM

Quote from: PovertyByte on March 12, 2017, 10:09:22 AM

I might have figured out the problem

I kept the modular PSU cable on the PCIe riser that came from the PSU in my main computer. Although it fits on the PSU in the other computer where it burned the PCIe slot, I notice that this molex power cord and the one that came from the bag to that PSU have a different metal prong missing in the PSU end of the plug.

Yeah that can happen.

I now try to have only evga p2 psus I all my gear.

I can keep that in mind but I don't think I'll ever have more than 1 dedicated mining rig. Not my budget to go much higher and simply having 1 rig is enough to put me in the top 1% when the day comes that crypto moons

antantti

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Quote from: PovertyByte on March 12, 2017, 10:09:22 AM

Although it fits on the PSU in the other computer where it burned the PCIe slot, I notice that this molex power cord and the one that came from the bag to that PSU have a different metal prong missing in the PSU end of the plug.

PSU modular connector pinout is not a standard, it helps a lot if you only use PSU's that use same pinout. Even same manufacturer uses different pinouts in different product lines.

Quote from: felixbrucker on March 12, 2017, 04:22:33 PM

do you think the p2 series (750W or higher) can power a 7990 (2x8pin) with two separate pcie cables without frying the cable at some point?

Yes it can, average 8-pin connector needs 300-400W before it gets to danger zone, monitor connector temps when you are doing test runs. Especially if dual mining.

felixbrucker

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Quote from: philipma1957 on March 12, 2017, 10:41:48 AM

Quote from: PovertyByte on March 12, 2017, 10:09:22 AM

I might have figured out the problem

I kept the modular PSU cable on the PCIe riser that came from the PSU in my main computer. Although it fits on the PSU in the other computer where it burned the PCIe slot, I notice that this molex power cord and the one that came from the bag to that PSU have a different metal prong missing in the PSU end of the plug.

Yeah that can happen.

I now try to have only evga p2 psus I all my gear.

not meant to hijack, do you think the p2 series (750W or higher) can power a 7990 (2x8pin) with two separate pcie cables without frying the cable at some point?

Tasty Potato

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And I thought it was dust or something >_<

But surely wrong cable is always to blame. I should be double cautious myself.

philipma1957

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'The right to privacy matters'

Quote from: PovertyByte on March 12, 2017, 10:09:22 AM

I might have figured out the problem

I kept the modular PSU cable on the PCIe riser that came from the PSU in my main computer. Although it fits on the PSU in the other computer where it burned the PCIe slot, I notice that this molex power cord and the one that came from the bag to that PSU have a different metal prong missing in the PSU end of the plug.

Yeah that can happen.

I now try to have only evga p2 psus I all my gear.

PovertyByte

sr. member

Activity: 420

Merit: 250

I might have figured out the problem

I kept the modular PSU cable on the PCIe riser that came from the PSU in my main computer. Although it fits on the PSU in the other computer where it burned the PCIe slot, I notice that this molex power cord and the one that came from the bag to that PSU have a different metal prong missing in the PSU end of the plug.

PovertyByte

sr. member

Activity: 420

Merit: 250

I am home on spring break and I brought my random old HP home with me and left the main one in the dorms

Before buying an open box GPU from microcenter I decided to see if I could bridge the desktop netork through my labtop on wifi since I needed to remove the wireless adapter to clear the PCIe x1 slot

I connected the powered riser in but without any GPU attached in the meantime. When I powered the system on it crashed. I tried one more time and it crashed again but now I smelled something. The USB wire that connects the PCIe powered riser was hot. The PCIe slot in the motherboard is burned now.

There was nothing on the riser to draw power and I had the molex power connector on the riser as well so the powered riser should not have been drawing from the USB. I am wondering if there is a problem with using powered risers on a PCIe 1.1 rather than 2.0 or 3.0. At least I know that this system can't be converted into a 3 GPU mining rig in the future before I ever go investing in GPU's

before anybody ask
I did not put the powered riser in backwards

Also, I used this same riser before off of my main computer before with no problem. I do not know if these are faulty for use with PCIe 1.1 or if these big out if nothing is actually connected to the riser

Topic: Powered PCIe riser burned PCIe 1.1 slot? (Read 825 times)