Jacob2me
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I currently have a 3090 FTW3 Ultra. My power supply is a thermaltake 850 watt. I currently am using one 8 pin, and then for the remaining two 8 pins it is a singular cable that has two 8 pins, one daisy chained to the other. I ran this same daisy chain on my 2080super and had no issues at all. However, I recently heard that this was a bad thing. I do have another cable that came with my power supply that I could use to make all the 8 pins dedicated. Should I switch to this or does it not matter? Also, a totally separate question HYDRO COPPER GAMING waterblock as a standalone, or will it only ever be with the card.
post edited by Jacob2me - 2020/12/08 23:36:56
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Cool GTX
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Re: 8 Pin Daisy Chain
2020/12/08 23:31:25
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Requirements On the EVGA product page  Three available 8-pin or 6+2pin PCIe power dongles 30 series pulls more Watts than 20 series cards Use GPU-Z & see how much you card is pulling When or If Hydro Copper - Block will drop ... no idea
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Jacob2me
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Re: 8 Pin Daisy Chain
2020/12/08 23:33:12
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Cool GTX
Requirements On the EVGA product page
Three available 8-pin or 6+2pin PCIe power dongles
Yes I am aware it needs 3 8 pins, I have the card. I was simply asking if using a daisy chained 8 pin is harmful or not. Here is a picture of what I mean. 
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Cool GTX
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Re: 8 Pin Daisy Chain
2020/12/08 23:35:48
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I would run Separate PCIe cables for each power socket on the Card - from the PSU
Many ? most ? PSU manufactures - do not suggest you use those pigtail PCIe on high watt GPUs
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royleijiang
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Re: 8 Pin Daisy Chain
2020/12/08 23:49:36
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Jacob2me
Yes I am aware it needs 3 8 pins, I have the card. I was simply asking if using a daisy chained 8 pin is harmful or not. Here is a picture of what I mean.
No, don't do it, potential causes damage to your GPU and PSU
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aardvark1134
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Re: 8 Pin Daisy Chain
2020/12/09 04:50:57
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We get this thread every day. Look through history and you can read about it as much as you ever wanted to read. Short version Group 1 You technically don't have to use 3 seperate ones according to one of the best and most costly power supply manufactuers. Group 2 It's a bad idea to not run a 3rd and use the pig tail instead Group 3 The 3rd cable is like 5 dollars why not just run it and not have to worry who is right?
post edited by aardvark1134 - 2020/12/09 04:56:38
Associate Code: XSFS5KM9FAHNVOC 
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finaltouch68
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Re: 8 Pin Daisy Chain
2020/12/09 05:03:16
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What if you use that style cable but only use the number one plug. Is that considered one line. The splitter in my mind if not being used shouldn't effect draw right?
I am using one of those as my 3rd cord because I didn't have an extra solid one with out the daisy chain.
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Cool GTX
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Re: 8 Pin Daisy Chain
2020/12/09 06:48:30
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finaltouch68
What if you use that style cable but only use the number one plug. Is that considered one line. The splitter in my mind if not being used shouldn't effect draw right?
I am using one of those as my 3rd cord because I didn't have an extra solid one with out the daisy chain.
Using one connector on the split PCIe is Fine 3 cables = Better OC if nothing else convinces you (voltage stability)
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dryja123
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Re: 8 Pin Daisy Chain
2020/12/09 06:58:33
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My FTW3 Ultra pulls 400W under max load. Each cable is rated for 150W. If you’re using 2 cables, one pigtail, you’re going to exceed the capacity of one of your cables.
Will it work? Yeah.
Is it recommended? Nope.
If you can run 3 cables do it
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finaltouch68
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Re: 8 Pin Daisy Chain
2020/12/09 07:26:19
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Cool GTX
Using one connector on the split PCIe is Fine
3 cables = Better OC if nothing else convinces you (voltage stability)
Thanks for the confirmation I was worried about that ever since I started reading certain threads around here.
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kraade
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Re: 8 Pin Daisy Chain
2020/12/09 07:37:21
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Jacob2me
I currently have a 3090 FTW3 Ultra. My power supply is a thermaltake 850 watt. I currently am using one 8 pin, and then for the remaining two 8 pins it is a singular cable that has two 8 pins, one daisy chained to the other. I ran this same daisy chain on my 2080super and had no issues at all. However, I recently heard that this was a bad thing. I do have another cable that came with my power supply that I could use to make all the 8 pins dedicated. Should I switch to this or does it not matter?
Also, a totally separate question HYDRO COPPER GAMING waterblock as a standalone, or will it only ever be with the card.
I have a spare EVGA 8 pin. I could mail 1 out to you. I bought a set not knowing the PSU comes with 2...
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KingEngineRevUp
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Re: 8 Pin Daisy Chain
2020/12/10 15:43:30
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Cool GTX
finaltouch68
What if you use that style cable but only use the number one plug. Is that considered one line. The splitter in my mind if not being used shouldn't effect draw right?
I am using one of those as my 3rd cord because I didn't have an extra solid one with out the daisy chain.
Using one connector on the split PCIe is Fine
3 cables = Better OC if nothing else convinces you (voltage stability)
Buildzoid and de8auer already disputed this. They do not experience the same results using a quality power supp that doesn't experience voltage drops. That being said, I get no difference whatsoever on my RM1000i. I decided to run 1 dedicated and 1 daisy chain for better and easier cable management.
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Cool GTX
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Re: 8 Pin Daisy Chain
2020/12/10 16:11:58
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Whatever works for you is fine by me  Big difference between Can & Should Check with your PSU manufacturer - they know their hardware best Me, I always use separate cables - while running several multi-GPU computers 24/7 & OC ---> Folding for the Greater Good
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