Another question is if you use two headed 8 pin power cables and distribute them so each jack head is on a neighbor's GPU you might be able to spread out the power peaks to allow 3 cables to run two three power jack GPU's instead of 6 cables?
Thank you for the discussion.
Even with the 2 x 8 pin PCIe connections, you will only get a total of 9 3080 Ti's using 2 x 1600W PSUs, not 10.
Your welcome.
I saw a nice 2000watt psu on sale the other day, it should enough shouldn't it?
Now we are back to the question of can you use both jacks on the cable on a GPU. The previous discussion resolved around the power specs from IEEE? The answer was one cable using one jack per cable. Which would translate into 5 GPU's. I think.
Tom M
A Proud member of the O.F.A. (Old Farts Association). Be well, do good work, and keep in touch.® (Garrison Keillor)
I would be VERY CAREFUL about buying the "less expensive" ( i.e. 'cheaper' ) PSUs that are intended for mining purposes.
#1 - Many of the PSUs can be very noisy, as much as 75 dB.
#2 - Many of these PSUs may rate themselves as "efficient, with over 80% or 90% efficiency", but are they certified with a 80% Gold rating, or higher? UNKNOWN
#3 - Often, reading between the lines, the wires are only 18ga AWG for a 2000W+ PSU. Also, some suggest leaving a 40% - 50% margin for CPU, Motherboard, Wires, etc., which I think is absurd, leading one ( at least me ) to suspect the quality of the product.
#4 - Many of the 'specific mining PSUs' ( i.e. 'smaller', server size ) come with only a 1 yr warranty.
In my unjustified opinion, you would be better off to be buying a known "good" 1,600W PSU like Corsair or EVGA rated at 80+ Platinum or Titanium for our purposes of using them in BOINC projects. Yeah, they're expensive, but I'd rather be safe than sorry.
As for Tom's recent comments ( assuming he's talking about the 3080- Ti's with 2 PCIe connections instead of 3 ), NO, do not depend on using a single cable with two PCIe plug-ins. Even a 300W the GPU will draw more power through that single cable vs two separate ones leading Tom to have another catastrophic failure.
That's my opinion, and I'm stickin' to it! I'm just sayin'.....
Now we are back to the question of can you use both jacks on the cable on a GPU. The previous discussion resolved around the power specs from IEEE? The answer was one cable using one jack per cable. Which would translate into 5 GPU's. I think.
Tom M
I have always used both plugs on the same cable but admitedly have a 3060 as my fastest gpu, I also always overpower my pc's ie 750 and 850 watt psu's are all that in my pc's now even with 480's, 580's, 1060's etc. This has given me the flexibility to have a shelf full of spare gpu's and be able to pretty much plug and play with any of them on any pc, with the Linux pc's being the exception on me not using AMD gpu's in them. I also do have some propetiary psu's that run the whole bottom of the pc, Dell's and HP's, that are significantly smaller than 750 or 850 watts which limits my ability to put 'any' gpu in them if one fails. In one of them there is even NO 6 pin gpu plug at all so I had to use adapters to go from the molex and sata plugs to come up with a cable that could power a gpu without crashing the pc. I don't use cd's or dvd's in most of my pc's so took them out long ago, I use usb sticks or 120gb ssd sata drives with an adapter to usb instead. I also have adapters to go from 6 pci gpu power plugs to 8 pin gpu power plugs that I use if I have too, although with most of my psu's already having 8 pin plugs now they are mostly back in the drawer. Alot of those adpters I was using when I was using bitcoin mining stuff for Bitcoin Utopia and have just kept on using them as needed. Some cheapers gpu's, I know George I know, don't always have 8 pin gpu plugs so adapters are still needed in some cases.
GWGeorge007 wrote: Tom M
)
I saw a nice 2000watt psu on sale the other day, it should enough shouldn't it?
mikey wrote: I saw a nice
)
It's not the amount of total watts, it is the maximum number of PCIe cables provided by the PSU.
Proud member of the Old Farts Association
GWGeorge007 wrote: mikey
)
Will these do?
[url]Amazon.com : 2000watt power supply for mining[/url]
mikey wrote: GWGeorge007
)
Now we are back to the question of can you use both jacks on the cable on a GPU. The previous discussion resolved around the power specs from IEEE? The answer was one cable using one jack per cable. Which would translate into 5 GPU's. I think.
Tom M
A Proud member of the O.F.A. (Old Farts Association). Be well, do good work, and keep in touch.® (Garrison Keillor)
mikey wrote: GWGeorge007
)
I would be VERY CAREFUL about buying the "less expensive" ( i.e. 'cheaper' ) PSUs that are intended for mining purposes.
#1 - Many of the PSUs can be very noisy, as much as 75 dB.
#2 - Many of these PSUs may rate themselves as "efficient, with over 80% or 90% efficiency", but are they certified with a 80% Gold rating, or higher? UNKNOWN
#3 - Often, reading between the lines, the wires are only 18ga AWG for a 2000W+ PSU. Also, some suggest leaving a 40% - 50% margin for CPU, Motherboard, Wires, etc., which I think is absurd, leading one ( at least me ) to suspect the quality of the product.
#4 - Many of the 'specific mining PSUs' ( i.e. 'smaller', server size ) come with only a 1 yr warranty.
In my unjustified opinion, you would be better off to be buying a known "good" 1,600W PSU like Corsair or EVGA rated at 80+ Platinum or Titanium for our purposes of using them in BOINC projects. Yeah, they're expensive, but I'd rather be safe than sorry.
As for Tom's recent comments ( assuming he's talking about the 3080- Ti's with 2 PCIe connections instead of 3 ), NO, do not depend on using a single cable with two PCIe plug-ins. Even a 300W the GPU will draw more power through that single cable vs two separate ones leading Tom to have another catastrophic failure.
That's my opinion, and I'm stickin' to it! I'm just sayin'.....
Proud member of the Old Farts Association
It may turn out I need a
)
It may turn out I need a couple of two slot only rtx 3080 ti's. Apparently EVGA rtx 3080 ti ftw3 are too wide.
I am ruling out the FE models due to the non-standard connectors.
The EVGA XC3 might be a pretty good choice.
Any other ideas?
Tom M
A Proud member of the O.F.A. (Old Farts Association). Be well, do good work, and keep in touch.® (Garrison Keillor)
Is it worth waiting for the
)
Sorry I posted in the wrong thread I have shifted my comment to "Any suggestions on GPU choice?"
Tom M wrote: Now we are back
)
I have always used both plugs on the same cable but admitedly have a 3060 as my fastest gpu, I also always overpower my pc's ie 750 and 850 watt psu's are all that in my pc's now even with 480's, 580's, 1060's etc. This has given me the flexibility to have a shelf full of spare gpu's and be able to pretty much plug and play with any of them on any pc, with the Linux pc's being the exception on me not using AMD gpu's in them. I also do have some propetiary psu's that run the whole bottom of the pc, Dell's and HP's, that are significantly smaller than 750 or 850 watts which limits my ability to put 'any' gpu in them if one fails. In one of them there is even NO 6 pin gpu plug at all so I had to use adapters to go from the molex and sata plugs to come up with a cable that could power a gpu without crashing the pc. I don't use cd's or dvd's in most of my pc's so took them out long ago, I use usb sticks or 120gb ssd sata drives with an adapter to usb instead. I also have adapters to go from 6 pci gpu power plugs to 8 pin gpu power plugs that I use if I have too, although with most of my psu's already having 8 pin plugs now they are mostly back in the drawer. Alot of those adpters I was using when I was using bitcoin mining stuff for Bitcoin Utopia and have just kept on using them as needed. Some cheapers gpu's, I know George I know, don't always have 8 pin gpu plugs so adapters are still needed in some cases.
I am seeing Nvidia Linux
)
I am seeing Nvidia Linux driver 420.69 popping up. What is its advantage over the 470/525/535 versions?
???
T
A Proud member of the O.F.A. (Old Farts Association). Be well, do good work, and keep in touch.® (Garrison Keillor)
That's Ian's inside joke.
)
That's Ian's inside joke. Ignore him. Ha ha LOL.