Was thinking, grab an old molex connector with a female pin, pop it out of the case, and it can be used to insert/twist on the bad MB pin to clean it up.

Hmmm...might try that. I was just playing around with it a few minutes ago and felt like I needed a dental pick or similar tool. All that black in the worst-looking socket is melted gunk from the PSU connector, and no amount of cleaning fluid, or digging with a stiff wire, is going to get it out. The pin in the middle of the socket still looks to be intact, though.

I've ordered a new mobo, just in case. For 20 bucks, I can afford to have a spare handy.

Hi,

My sorry words will follow...

I've been there, I've seen that, I've experienced the same. My MoBo connectors were fried, the cables from my PSU to The MoBo were fried, The GPUs were fine.

A lesson learned: Get a GPU with a power connector or two! Or more of them GPUs but make sure they have their own power.

The MoBo cannot supply 4x75W to GPUs. I was lucky a few times and got a new MoBo and a couple of PSUs with 7 year warrany. Things may not end that lucky.

--
Petri

p.s. Have you seen the Tu'esday edition of the GTX1080 series yet?

---

To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones

p.s. Have you seen the Tu'esday edition of the GTX1080 series yet?

That must be the 1080Ti KingPin @2025 MHz.

My 750 PSU just screamed at me saying "Not Bloody Likely!"

...I've been there, I've seen that, I've experienced the same. My MoBo connectors were fried, the cables from my PSU to The MoBo were fried, The GPUs were fine.
A lesson learned: Get a GPU with a power connector or two! Or more of them GPUs but make sure they have their own power.
The MoBo cannot supply 4x75W to GPUs. I was lucky a few times and got a new MoBo and a couple of PSUs with 7 year warrany. Things may not end that lucky....

My experience has been just the opposite. The only time I've experienced burnt MB pins was when using a 250 watt 6970 which has 6 & 8 pin external connectors. I've never had that problem with GPUs that use 75 watts or less. It seems reasonable, if the card isn't capable of pulling more power than the pins can handle, you won't have the problem. I don't know about Jeff's 960, but mine has a single 8 pin connector....sometimes I worry about it since it's using a 6 pin adapter. If for whatever reason the card tries to pull much more than 75 watts thru the MB pin, it will probably burn.

p.s. Have you seen the Tu'esday edition of the GTX1080 series yet?

That must be the 1080Ti KingPin @2025 MHz.

My 750 PSU just screamed at me saying "Not Bloody Likely!"

No, no, no, ...

A normal 50W channel blower unit is able to make four of NVIDIAs basic design blower models to run 2045 MHz @ 67degC.

What I meant with the Tuesday edition,
is that the GPUs are behaving badly.
Now they (4) seem to make themselves
manifesting having 16 of them,
but in the upcoming weeks they will do that (report of them being 4 x actual) only on Tuesdays.

HUH

---

To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones

...I've been there, I've seen that, I've experienced the same. My MoBo connectors were fried, the cables from my PSU to The MoBo were fried, The GPUs were fine.
A lesson learned: Get a GPU with a power connector or two! Or more of them GPUs but make sure they have their own power.
The MoBo cannot supply 4x75W to GPUs. I was lucky a few times and got a new MoBo and a couple of PSUs with 7 year warrany. Things may not end that lucky....

My experience has been just the opposite. The only time I've experienced burnt MB pins was when using a 250 watt 6970 which has 6 & 8 pin external connectors. I've never had that problem with GPUs that use 75 watts or less. It seems reasonable, if the card isn't capable of pulling more power than the pins can handle, you won't have the problem. I don't know about Jeff's 960, but mine has a single 8 pin connector....sometimes I worry about it since it's using a 6 pin adapter. If for whatever reason the card tries to pull much more than 75 watts thru the MB pin, it will probably burn.

Actually, Petri's pretty much nailed it for my xw9400s. The User Manual and User Guide never specified the max power draw for the PCIe slots and, since I've been running 4 GPUs on my first xw9400 since November, 2013, without problems, I assumed that all 4 slots were rated for 75W. They're not. I finally dug through an xw9400 Technical Manual today and found that the max slot power for the two x16(x8) is supposed to be 25W. Apparently that doesn't mean that they can't supply more, but they really shouldn't be expected to.

Both of my xw9400s are running cards on riser cables, but they're not powered risers. That means that the two 750Ti's on my original xw9400 are drawing their full power, which I believe is in the 65-70W range running Windows SoG, from slots that should only be good for 25W. I just tried getting a look at the 24-pin connector on that box and can see some light browning on the underside of pins 10 and 11, but can't easily separate the plug from the socket, so I'm not going to try to get a closer look. I suspect that they're probably fused....but still working okay after nearly 4 years of simmering.

On the rig that just got fried, the two 960s on the x16(x8) slots are also on unpowered risers, but they have supplemental 6-pin connectors which, theoretically, should be providing any power that the slots themselves cannot. Of the two 960s that are mounted directly in the x16(x16) slots, one has a 6-pin connector and the other has an 8-pin.

In any event, new MB and PSU are on the way, but I think I'm going to replace all the riser cables in both boxes with powered ones, so the cards can hopefully draw extra power from a Molex or SATA power connector, instead of overloading the slots. BTW, the pins that fried are indeed the two 12V ones for the circuit that's used for "PCI, fans, onboard logic, and audio regulator", according to the technical manual. Supposedly that circuit can handle a maximum of 18 amps, but I have no idea what it's actually drawing.

[quote][quote]. . Some Freon and a Qtip should show up how much damage has been done.

Have plenty of QTips, but no Freon. I'll see what I can do tomorrow.

. . Do you have any denatured alcohol (Isopropyl) such as maybe tape head cleaner? That would do the trick. Just to clean that mobo ATX socket enough to set the extent of the damage.

Stephen

..

Sure,...have plenty of that stuff around. An old dinosaur has to keep his 8-track players (yes, that's plural) in good working order, after all. ;^)

. . I never wandered down the 8 track ...

Stephen

:)

Actually, Petri's pretty much nailed it for my xw9400s. The User Manual and User Guide never specified the max power draw for the PCIe slots and, since I've been running 4 GPUs on my first xw9400 since November, 2013, without problems, I assumed that all 4 slots were rated for 75W. They're not. I finally dug through an xw9400 Technical Manual today and found that the max slot power for the two x16(x8) is supposed to be 25W. Apparently that doesn't mean that they can't supply more, but they really shouldn't be expected to.

Both of my xw9400s are running cards on riser cables, but they're not powered risers. That means that the two 750Ti's on my original xw9400 are drawing their full power, which I believe is in the 65-70W range running Windows SoG, from slots that should only be good for 25W. I just tried getting a look at the 24-pin connector on that box and can see some light browning on the underside of pins 10 and 11, but can't easily separate the plug from the socket, so I'm not going to try to get a closer look. I suspect that they're probably fused....but still working okay after nearly 4 years of simmering.

On the rig that just got fried, the two 960s on the x16(x8) slots are also on unpowered risers, but they have supplemental 6-pin connectors which, theoretically, should be providing any power that the slots themselves cannot. Of the two 960s that are mounted directly in the x16(x16) slots, one has a 6-pin connector and the other has an 8-pin.

In any event, new MB and PSU are on the way, but I think I'm going to replace all the riser cables in both boxes with powered ones, so the cards can hopefully draw extra power from a Molex or SATA power connector, instead of overloading the slots. BTW, the pins that fried are indeed the two 12V ones for the circuit that's used for "PCI, fans, onboard logic, and audio regulator", according to the technical manual. Supposedly that circuit can handle a maximum of 18 amps, but I have no idea what it's actually drawing.

So...which of the slots is the one that fried? On my xw4600 those two fried pins supply power for the #1 x16 slot which is clearly marked as 75w + 75w on the board. The lower x16 slot on my board is also marked as 75w + 75w and still works OK with the burnt 2 pins while the #1 slot doesn't. The PCIe standard calls for 25w at startup then it is reconfigured as a High Power Device capable of 75 watts. The PCIe standard calls for a Max 25 watts for cards lower than x16 that are not capable of being reconfigured as a High Power Device. As far as I know, All Graphics cards are capable of being automatically reconfigured as High Power Devices by the PCIe standard, else there wouldn't be any need for an Open-Ended x8 slot which my xw4600 boards have. My 750Ti cards usually run around 25-30 watts according to nVidia-smi, so, even if they aren't being reconfigured as a High Power Device they should be OK in the Open ended x8 slot. You can find the power standards on page 20 of this PDF, http://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/639/7851.PCIe_5F00_designGuides.pdf#page=20
BTW, my Mac with 2 x16 and 2 x4 slots is listed as having 300 watts available to the 4 PCIe slots, 4 x 75 = 300.

Here are the relevant sections from the Technical Reference. You can write to HP if you want to challenge them. :^)


As far as I know, no specific slot is the cause, or is itself fried.


The fried pins are numbers 10 and 11.


And that "12 V-B" circuit seems to handle all the "PCI, fans, onboard logic, and audio regulator". It's not fragmented by slot.

I see what you are saying now Petri Re: 4xGPU reporting. You are currently showing:

[16] NVIDIA GeForce GTX 1080 Tu (4095MB) driver: 381.09 OpenCL: 1.2

But then it is Saturday for you right now, strange ....

Here are the relevant sections from the Technical Reference. You can write to HP if you want to challenge them. :^)

http://i64.tinypic.com/28009k4.jpg
As far as I know, no specific slot is the cause, or is itself fried.

http://i64.tinypic.com/vdmh6w.jpg
The fried pins are numbers 10 and 11.

http://i66.tinypic.com/4g586.jpg
And that "12 V-B" circuit seems to handle all the "PCI, fans, onboard logic, and audio regulator". It's not fragmented by slot.

Hmmm, they give you 4 x16 slots but only two can be used for Graphics cards. The telling spec is the one you didn't list;

Current  Continuous                          Description
12 V-B     15.7 A        Used with PCI, fans, onboard logic, and audio regulators

15.7 Amps ain't much. Seems these boards just aren't wired for very much PCIe power.
The problem with using External power connectors is the Graphics cards are designed to pull the first 75 watts from the Slot.
So, the cards will still be trying to pull 300 watts from slots wired for 188 watts. I don't think that will work...for very long.
I think I'd stay away from that board. However, I think the three 750Ti cards will work on the xw4600 since they draw so little power.

Kinda strange that my 'burnt' board seemed to work fine with the 6870 in the lower slot, but fails with the card in the upper slot. Must be an HP thing.

15.7 Amps ain't much. Seems these boards just aren't wired for very much PCIe power..

Yeah, max is supposed to be 18.0 Amps, which should allow for some occasional higher peaks, but with S@h we're pretty much running flat out at whatever our cards need all the time.

The problem with using External power connectors is the Graphics cards are designed to pull the first 75 watts from the Slot.
So, the cards will still be trying to pull 300 watts from slots wired for 188 watts. I don't think that will work...for very long.

The benefit with the powered risers is that they feed the additional power through a Molex wired into the riser's PCI-e connector. Theoretically, that should mean that while the card may still be drawing 75W from the riser cable, not all the power is actually coming from the slot itself. Theoretically. :^)

I just compared my Intel board D975XBX2 that has 3 x16 Graphics slots to the xw9400 & xw4600. The Intel board has an extra 4 pin molex power connector labeled AUX PCIe along with the standard 8 pin connector. That would supply the extra PCIe power to the 188 watts to ensure it has enough for 3 x 75 = 225. The xw-HP boards don't have that extra AUX PCIe connector. So, you're working with a max of 188 watts on the HP boards. If you were using Unpowered Risers with those two extra GPUs that would explain the burnt pins that are only good for 188 watts. The powered Risers may help, you'll just have to try them and see ;-)
Good Luck

I see what you are saying now Petri Re: 4xGPU reporting. You are currently showing:

[16] NVIDIA GeForce GTX 1080 Tu (4095MB) driver: 381.09 OpenCL: 1.2

But then it is Saturday for you right now, strange ....

Yup, that is a test.
I'll try to make it happen only on Tuesdays.
:)

---

To overcome Heisenbergs:
"You can't always get what you want / but if you try sometimes you just might find / you get what you need." -- Rolling Stones

Was thinking, grab an old molex connector with a female pin, pop it out of the case, and it can be used to insert/twist on the bad MB pin to clean it up.

Just tried a modified version of your idea and it appears to have worked. The Molex pin would have been too short for me to make effective use of, so I rooted around in a box of old ballpoint pens and found a dried-up metal refill. I just cut it in half and chucked it into my Dremel rotary. It drilled out most of the gunk in both sockets in just a few seconds. The pins in the middle appear to still be intact, though whether they're still functional or not will have to await the arrival of the new PSU, which isn't due until Friday. Keeping fingers crossed!

Stupid USPS. FedEx passed the Power Supply to the Post Office, and apparently the Postman was afraid of getting wet this afternoon. From the door I watched the postman stop at the mailbox and then drive off with my Power supply. It's a little ways to the mailbox, so, there wasn't much I could do. Now it says;
2:40 pm Delivery exception Unable to deliver - Please contact local Post Office to pick up or reschedule delivery
The Post Office closes at 12:30pm on Saturdays. That means Monday before the newer PS arrives. I think I'll go ahead and swap the cards anyway, the three 750Ti shouldn't pull more than the single ATI card anyways. At least the rain has stopped.

It must not be a day for PSUs.

I ordered a 1000W EVGA from eBay over 2 months ago from Ontario, then later got a Tracking number showing from Singapore, Geesh. Abot 2 weeks later I seen the user deleted their account, so I patiently waited for it.

I've been meaning to call eBay for some time about it since it wasn't showing up. Then yesterday received a parcel pickup notice with that tracking number. Surprised at that and thinking I was going to report it anyways, and hadn't actually received it yet and might get the PSU and refund :)) I called eBay and they quickly refunded me full value (well minus the ~6$ in US/CAN exchange x2).

So I picked it up today and received a small bubble envelope. Laughingly opening it wondering what I might find - a cheap yellow/pink kids bracket. I guess I should have specified blue/black to match my case so I could at least use it as a cable tie :)

So FOR SALE: Yellow/Pink bracelet 50% off, $3.

It must not be a day for PSUs.

I just steal JBird's since he lives down the street when I need a PSU, lol....

Well, that wasn't so bad getting the three 750Ti cards installed on the HP xw4600. The hardest part was clearing the x8 slot sandwiched between the two x16 slots. Using the PCIe extender cable interfered with the fan on the top card. The solution was to dig out the old Zalman VNF-100 passive cooler and install that on the Top 750Ti. The passive cooler wraps around the card with the fins on the backside of the card which leaves the slot below the card free, giving full access to the otherwise covered x8 slot. That way the extender cable freely passes between the cards installed in the x16 slots. The Top card was running a little hot with the passive cooler so I strapped on a small case fan, problem solved. Now all three cards run so cool I don't have to adjust the fans on the other two cards...nice. The xw4600 has the same PCIe power rating as the xw9400 and according to nvidia-smi the three cards are using about Half the total watts available. Seems to be working fine, about the same as it was in the Intel board with much less GPU fan speed. This frees up the machine with the Intel board, the 750 watt PS, and three double spaced x16 Graphics slots. The ATI cards are keeping it warm for now.

When the Newer Power Supply arrives I'll just leave it in the box as a spare.

A serious thank you to TBar and Petri and Jason for their work on the special app. I needed a reason to start fiddling with a UNIX (IRIX) like environment, and this was just the ticket. And thank you indeed to Stephen for working through the difficulties and attempting to help others.

Was thinking, grab an old molex connector with a female pin, pop it out of the case, and it can be used to insert/twist on the bad MB pin to clean it up.

Just tried a modified version of your idea and it appears to have worked. The Molex pin would have been too short for me to make effective use of, so I rooted around in a box of old ballpoint pens and found a dried-up metal refill. I just cut it in half and chucked it into my Dremel rotary. It drilled out most of the gunk in both sockets in just a few seconds. The pins in the middle appear to still be intact, though whether they're still functional or not will have to await the arrival of the new PSU, which isn't due until Friday. Keeping fingers crossed!

The PSU got here a day early. I got it installed and plugged into the existing mobo and ran SoG on Windows for about an hour. No problems, so now it's running Linux and the Cuda 8.0 Special App. Just on the two GTX 960s that are plugged directly into the board, though, since I don't yet have the powered riser cables for the other two. We'll see how it goes overnight. Still keeping fingers crossed. If things go well, the new mobo will go directly into the spare parts bin once it gets here tomorrow or Saturday.