Afterburner
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Hey, I see in this post from Jacob, it looks like only two 8pin connections are used and a pig tailed six pin. Is that correct or is this an elusion to my eyes? Found here... https://twitter.com/EVGA_JacobF/status/1308222385347149824/photo/1  Does the EVGA RTX 3090 FTW Ultra need al three individual connections to the PSU or no? Thank you! 
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gravedigger78
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 07:19:28
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I was thinking the same thing. I thought the 3080 FTW3 was 3x 8 pin so wouldn't the 3090 FTW3 definitely need 3x 8 pin?
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ty_ger07
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 07:24:50
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☄ Helpfulby Afterburner 2020/09/22 09:02:36
No, it doesn't necessarily need three individual connectors at the PSU Many quality PSUs have high-enough quality wires, insulation, pins, and connectors that can withstand much more than the bare minimum ATX specifications. For example, many Seasonic PSU's have their 8-pin connectors rated for 270 watts instead of the bare minimum 150 watts, which is an increase in 80% more wattage per 8-pin connector; or up to 540 watts at the PSU connector end per each 8-pin connection. If the PSU is a high quality unit, and if it comes with the wires to plug two 8-pins into the video card for only one 8-pin on the PSU side, you can rest assured that the PSU manufacturer has determined that it will be safe to do so. Don't use such cables or adapters from aftermarket sources to plug into a PSU which didn't come with such cables in the box. Only do it if the PSU came with the necessary cable. That's how you can easily know if the PSU manufacturer designed all the other necessary components to withstand such load. If at all possible, use three separate 8-pin connectors. This is always recommended. But, if your PSU doesn't have enough cables and connections available to make that happen, it's safe to use one 8-pin to 8-pin cable and one 8-pin to dual 8-pin cable (thus have two 8-pin connections on the PSU side for three 8-pin connections on the GPU side), as long as your PSU came with the necessary cables to do so.
post edited by ty_ger07 - 2020/09/22 07:42:03
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Razorub
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 09:57:00
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I have a Corsair HX850 psu, 4 SSD drives, and an i9 9700. Would I be able to run a EVGA RTX 3090 FTW Ultra?
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EVGA_JacobF
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 10:03:39
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Razorub
I have a Corsair HX850 psu, 4 SSD drives, and an i9 9700. Would I be able to run a EVGA RTX 3090 FTW Ultra?
Yes
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Razorub
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 10:11:06
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kevinc313
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/22 10:23:38
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arcky
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/23 22:12:45
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if you have 3 separate 8-pins, itd be safest to use that configuration
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ReZpawN
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Re: Powering EVGA RTX 3090 FTW Ultra with two or three 8-pin connections
2020/09/24 03:22:17
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I think its okay as long as its two separate cables from psu
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TheStaticc
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My ftw 3090 has 3 8 pin connectors instead of 2. Is there some sort of special cable I need to fill in those slots???
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Mroberts95
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Re: 3x8 pin ????
2020/09/29 17:47:27
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Either use a 2 pcie 8 cable with another single pcie 8 cable or use 3 single cables to run it, don’t try and use one cable with 3 pcie8 spilt.
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ty_ger07
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Re: 3x8 pin ????
2020/09/29 17:48:49
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Have you ever wondered, 'has this question been asked previously'? You need all three to be plugged in. If your PSU only has the ability to plug into two, buy a different PSU. If your PSU COMES WITH all the necessary adapters or cables to plug all three in, that's fine. If your PSU DOES NOT COME WITH the necessary adapters or cables to plug all three in, buy a different PSU. ty_ger07
You didn't tell us the power supply make and model. That will make a huge difference in answer.
IF it is a quality PSU with decent gauge wires and no bottom-barrel garbage pins, it should be absolutely no problem. I am skeptical that the FTW3 really needs 3x8-pins in the first place, and that it has 3x8-pins for marketing reasons, but that is yet to be proven.
For example, Seasonic is rating Prime, Focus, and Core models of its PSUs' 2x8-pin connectors for 540 watts (270 watts per 8-pin); so without a doubt that would be enough to connect to a 3x8-pin plug. It HIGHLY depends on the quality of the PSU, quality of the connectors, and the gauge and temperature rating of the wires. If you have a Seasonic Prime, Focus, or Core PSU (like I do), I would say absolutely, without a question GO FOR IT! No worries there at all. On the other hand, if you have a $50 PSU without any clear specifications or manufacturer's blessing, don't do it.
A video about 2x8-pin vs 3x8-pin marketing:
and ty_ger07
Narune
ty_ger07
Narune
FCooley
I only see two pcie 8-pin connectors on that PSU. You will either have to get the XC3 or upgrade your PSU.
I ordered this- https://www.amazon.com/gp..._s00?ie=UTF8&psc=1
I don't think that you needed to. I think your existing PSU was fine.
My question is, is it safe to use one of those additional 6+2 pin connectors hanging off to the side?
Like I said, yes, I think it would be fine. Safe? Without a doubt. Corsair wouldn't make that cable if Corsair didn't think that it could handle at least 300 watts.
The three 8-pins are designed to meet the minimum specifications (which are pathetic). EVGA puts 3 8-pin connectors on the card so that 1) it looks like a powerful beast of a card which must be better for some reason, and 2) so that you can use the absolutely trashiest power supply which barely meets the ATX specifications, and it won't start on fire. Your Corsair power supply is not a piece of trash and can handle way more amperage (and thus power) than the minimum specification, and therefore it is safe; without a doubt.
Like I said in the other thread, which I linked to above, watch this video:
[same video as above]
If you have the attention span, pay attention to what he says about amperage rating, cable gauge, and temperature. The minimum specifications are just the absolute bare minimum for the worst trashiest PSU which can still be sold. Respectable PSUs, like yours, use much better wires and connectors. Again, Corsair wouldn't sell the cable if it wasn't designed to handle the power.
post edited by ty_ger07 - 2020/09/29 19:50:30
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aardvark1134
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Re: 3x8 pin ????
2020/09/29 19:17:36
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If your power supply doesn't have 3x8pin slots you can hook cables too, it likely can't handel that card.
Most power supplys 850+Watts have 4x8pin available.
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zastavets
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Re: 3x8 pin ????
2021/11/11 17:50:09
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If I connect the power supply with two wires, one of which has a bifurcated connector on the side of the card. (DUAL PCI Connector), does it matter where exactly it should be included in the order of the connectors on the video card?
I mean, is there a connector on the card that consumes or requires more power than the other two connectors? If so, then the most demanding connector on the video card requires one direct wire, and the others can use Dual Pci Cable
I will be very grateful for the answer!
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