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GPU's keeps blowing up PSU's
I have a little problem with my power supply's.
Here is the details.
1 x ASRock H97 Anniversary
6 x R9 290's
2 x Thermaltake - Toughpower GOLD 1000W
CPU, Memory, HD Drive.
My problem is i keep blowing up the GPU port in the power supply's.
I overclock a little
Core Voltage (mV) +0
Power Limit (%) +0
Core Clock (MHz) 1080
Memory Clock (MHz) 1250
Fan Speed (%) 85
I have killed two PSU now, I was thinking 2 x 1000W would be ok.
I don't know nothing about the Core Voltage and Power Limit stuff
so i didn't want to play around with then.
Surly 2 x1000W PSU's are fine for 6 x GPU's ?
3 GPU's on each power supply.
Am i missing something ?
Here is the details.
1 x ASRock H97 Anniversary
6 x R9 290's
2 x Thermaltake - Toughpower GOLD 1000W
CPU, Memory, HD Drive.
My problem is i keep blowing up the GPU port in the power supply's.
I overclock a little
Core Voltage (mV) +0
Power Limit (%) +0
Core Clock (MHz) 1080
Memory Clock (MHz) 1250
Fan Speed (%) 85
I have killed two PSU now, I was thinking 2 x 1000W would be ok.
I don't know nothing about the Core Voltage and Power Limit stuff
so i didn't want to play around with then.
Surly 2 x1000W PSU's are fine for 6 x GPU's ?
3 GPU's on each power supply.
Am i missing something ?
Comments
How are the PSUs joined together?
What type of risers are you using?
You should have the 1st (primary) psu powering all the motherboard stuff - motherboard, CPU, hard-drive (ssd would be better), ALL the riser's power - I mean the molex or sata power to all 6 risers and the 6/8 pin power to the first 3 GPUs, including the one in the x16 PCIE slot.
The second PSU should be used for JUST the 6/8 pin power to the second 3 GPUs. Definitely don't power risers or anything else with the second PSU - just the GPU 6/8 power outputs.
The second PSU can be made to run by shorting the green wired pin in the ATX plug to a black wired pin, then turning it on before you start the rig with the primary PSU.
If you use the second PSU for riser power and GPU power for the second 3 GPUs the riser connections are causing the two PSUs to fight each other over 12v regulation, so risers MUST ALL be powered by the 1st PSU.
The red ports are only for the GPU's
When i have taken the PSU back to the shop they said
that the red ports are faulty.
The risers that I'm using is
And I'm using
To connect the PSU's together.
1. PSU to the Motherboard stuff (CPU, HDD,)
And to 3 x risers (Including the x16)
3 x 6/8 pin power
2.PSU was connected to 3 x risers
3 x 6/8 pin power
Is x 2 Toughpower GOLD 1000W PSU's good enough for
six R9 290's ?
I starting to think it's not.
There has to be more R9 290 rigs guys around
It would be good to know how much PSU they have
and what setting if i needed to change.
You MUST NOT use the 2nd GPU for the 3 risers! Use the 1st GPU for ALL 6 risers and the 2nd GPU for ONLY the 3x6/8 pin power.
I am running 1 rig 4 x 290s with 2 x 750w PSUs and another rig with 4 x 290s plus 1 x 380 on a 1000w & a 850W PSU. 2 x 1000W is enough. You fried the PSU because you had the risers connected to the 2nd PSU.
It doesn't matter which PSU powers which riser. The Riser +12V and the PCIe +12V don't ever mix. I've been doing this since the Litecoin days.
This would only be an issue if he was using those old uncut powered ribbon risers.
His issue is that those R9 290 at stock voltage and overclocked probably used around 350Watts per GPU. Running 350X3=1050Watt should be fine per PSU but the connector probably couldn't handle it.
He probably has a similar cable as this. And he connected probably over 300Watts thru that one connector, so 100Watts per wire and that's why it melted.
I had this happen with my Antminer S3's
@op, Try to undervolt your cards, its pretty simple.
A 290 can consume even 370W in dual mining if configured incorrectly. So 3 of them can blow up a 1000W psu.
What should i try ?
It's running at
Core Voltage (mV) +0
Power Limit (%) +0
Core Clock (MHz) 1080
Memory Clock (MHz) 1250
Fan Speed (%) 85
And is there any way of knowing how much each PSU is using.
I will post the results soon.
I'm hoping this will help.
What are they called ?
Its not your Power Supply, its the red connector. It happens even on expensive Platinum type of power supplies, the connection is just not good.
Flash with Stilt Bios, and it will run at 29MH/s and use much much less power.
I think its safer NOT powering all the risers with the motherboards PSUs because you will overload the cables. How can one PSU power all 6 risers?
Only way is to use the SATA connectors and that leads to melting wires.
Powred risers are pluged on 3x molex and 3x sata (every riser on its own cable ofc).
And the cables+conectors are not hot at all. Not even warm actualy.
That problem with the melting cables was with the first amd drivers for RX series. They fixed that somehow.
If this is the case, it's basically pointeless to go dual psu when I could get a 1000w gold rated psu for cheap, correct?
Edit: read through the thread and it seems theres some debate.. not sure how i want to go about a PSU for my next rx rig..
Interesting...so with newer driver, cards are probably NOT getting 55W from the risers (as was indicated before). Nitro's have 8-pin, so they might have distributed power so 8-pin gets at least 125W or up to actual draw (maybe even full 150W) and the rest (if necessary) comes from the slot (or riser). It would actually make sense.
Do you know which driver fixed this? 16.7.3 or later hot fixes?
Re PSU-why mess around with 2 PSU when you can get used or new other EVGA 1300 for $120-150. This PSU is great.
Other topics or posts you've read are by individuals applying "broscience" and do not seem to understand how the ATX specification(s) dictates power supply delivery & connectivity. Majority of miners here are basically reading and citing outdated BitcoinTalk forum threads from other clueless individuals.
If you're still not sure who to believe, read the ATX specifications yourself. Here are my explanations on the matter as a starting point. Feel free to read the entire thread I've linked to, and keep in mind no one has refuted my explanations without citing a factual source or document. Everyone who keeps claiming they have been "doing this since the Litecoin days" are full of shit.