chrisdglong
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Is it fine to run one power cable that splits into two with my 2080Ti? I guess I never really thought about it, but have been doing this for years. At least with my 980, 980Ti, 1080, 1080Ti and now this card. I keep hearing people suggest running two cables, but I haven't had a problem so far. I have a AX860i PSU from Corsair, the Platinum rated one.
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Baratak
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Re: 2080 Ti, Power Cables?
2019/02/15 18:57:25
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I wouldn't. The problem is the load is all going across 1 cable between the psu and gpu. Your plugs won't overheat. But the cable may, and at a min you'll get some voltage drop.
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Baratak
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Re: 2080 Ti, Power Cables?
2019/02/15 18:58:29
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That said, good chance you'll be ok, but why not add some extra copper for the electricity to travel on?
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/15 19:04:07
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I think I originally set it up this way to have less wires.
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/15 19:06:51
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I suppose, why not though. It is a pretty easy fix.
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markestamper
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Re: 2080 Ti, Power Cables?
2019/02/15 19:29:15
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chrisdglong
Is it fine to run one power cable that splits into two with my 2080Ti? I guess I never really thought about it, but have been doing this for years. At least with my 980, 980Ti, 1080, 1080Ti and now this card. I keep hearing people suggest running two cables, but I haven't had a problem so far. I have a AX860i PSU from Corsair, the Platinum rated one.
I have not had a problem either with my 2080 Ti with just one cable split, but when I have time (get off my lazy butt) I am gonna run two cables. Even with just the one cable split I still hit max wattage tho.
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Sajin
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Re: 2080 Ti, Power Cables?
2019/02/15 20:09:21
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Would definitely use two for 2080 ti's.
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jfw06013
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Re: 2080 Ti, Power Cables?
2019/02/15 21:50:12
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I would not. Although your computer may look better you really need the extra wire esp. if your overclocking. I have my system on a APC Back-UPS Pro 1000 and running SETI at Home, the system is drawing an average 550 watts or more. I am considering buying another RTX 2080 Ti FTW 3 and using the system configuratore (  ) I will need to buy at least 1500 watt psu (I have a 1000 G+ psu now) in order to run those 2 cards.
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compddd
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Re: 2080 Ti, Power Cables?
2019/02/15 21:59:24
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Are there any articles or definitive proof that 2 cables is best for 2080 Ti?
CPU: CORE I7-4790K // MB: ASUS Z97-AR // GFX: EVGA RTX 2080 TI BLACK EDITION GAMING
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GGTV-Jon
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Re: 2080 Ti, Power Cables?
2019/02/15 22:22:19
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compddd
Are there any articles or definitive proof that 2 cables is best for 2080 Ti?
This guy fried his PSU connector running 1 cable from the PSU to s slitter - https://forums.evga.com/FindPost/2921569 If you are doing ANY OCing then you REALLY need to be using 2 cables - why run the chance of frying a connector over vanity?
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Sajin
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Re: 2080 Ti, Power Cables?
2019/02/15 23:46:17
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compddd
Are there any articles or definitive proof that 2 cables is best for 2080 Ti?
Just do it. Don't risk your expensive hardware.
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compddd
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Re: 2080 Ti, Power Cables?
2019/02/16 09:00:39
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Can you get a higher OC using 2 cables?
CPU: CORE I7-4790K // MB: ASUS Z97-AR // GFX: EVGA RTX 2080 TI BLACK EDITION GAMING
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mattman657
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Re: 2080 Ti, Power Cables?
2019/02/16 11:19:10
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compddd
Can you get a higher OC using 2 cables?
If it helps the card's overall stability than yes probably. But at the end of the day it is a generally accepted best practice to use individual cables for each plug, no real reason to not do it.
EVGA Z390 Dark | Intel i9900k 5.2 GHz | 2 x EVGA 2080Ti FTW3 Ultra | G.Skill TridentZ 4,133MHz | Samsung 970 Pro & Evo, 850 Evo Lian PC-V3000 | EK Res & Dual D5 Pump | 3 x Alphacool UT60 | Noctua & Akasa Fans | Asus PG279Q
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bcavnaugh
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Re: 2080 Ti, Power Cables?
2019/02/16 11:24:43
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Time to add a FAQ on this Question.
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Sajin
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Re: 2080 Ti, Power Cables?
2019/02/16 11:31:37
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compddd
Can you get a higher OC using 2 cables?
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/16 13:24:36
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I guess they provide the split cable for lower-end cards, which then you probably don't need two connections? I am just confused why Corsair would provide the cable if it was not tested to be safe to use?
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bcavnaugh
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Re: 2080 Ti, Power Cables?
2019/02/16 13:35:44
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Ask Corsair that question.
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icslowmo
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Re: 2080 Ti, Power Cables?
2019/02/16 14:18:44
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I would take a solid guess that the splitters are for multi GPU setups that require 4 plug (2x per GPU).
Seeing as I’m seeing a lot of posts about failures of these 2080(Ti)’s, I’m starting to wonder if it maybe do to undersized PSU’s people are trying to run their systems on. Let’s do some math:
OC’d CPU of choice = 200 watts +
OC’d 2080(Ti) GPU = 325 watts + (I’ve seen my 2080 Ti Hydro Copper spike to over 400 watts, even with its 373 watt max bios)
Plus SSD’s OC’d memory and WiFi, LAN, onboard sound (or external card).
You’re looking at 600-700 watts or more depending on spikes and CPU used.... So your 860 watt PSU is maybe just enough to work.
The point to split the two 8pins would be to load the (possibly undersized) PSU more evenly on the single power rail or across a multi rail PSU.
It is generally recommended to load a PSU to around 50-60% for best performance. So with these numbers, owners of 2080 Ti should be running at least a 1000 watt PSU to help cover the extra draw these cards can and will draw. I’m currently running a 1200 watt PSU but considering upgrading to something bigger as a i9 9900k OC’d have been seen pulling close to 300 watts.
OC’d 9900k = 300w
2080 Ti = 400w
Fans and other system items = ~ 100w
That’s 800 watt usuage which is ~67% of my aging PSU (Antec TPQ-1200). Which age is another factory you have to account for as well.
Just my thoughts and input.
Chris
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/16 16:14:32
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I did switch out the cables because there is really no reason not to. I now have two separate cables running to the GPU. I also have been watching power usage and it uses only 450 watts max while playing BF 5. Even if it did jump up a bit further, it still will not be too much for an 860 watt platinum rated PSU.
post edited by chrisdglong - 2019/02/16 16:36:23
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/16 17:29:17
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Played some Metro Exodus, got to just over 400 watts. This was with ray tracing on ultra. I kind of figured it would use less power than BF 5 though, as it uses less CPU.
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markuaw1
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Re: 2080 Ti, Power Cables?
2019/02/16 17:46:32
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icslowmo
I would take a solid guess that the splitters are for multi GPU setups that require 4 plug (2x per GPU).
Seeing as I’m seeing a lot of posts about failures of these 2080(Ti)’s, I’m starting to wonder if it maybe do to undersized PSU’s people are trying to run their systems on. Let’s do some math:
OC’d CPU of choice = 200 watts +
OC’d 2080(Ti) GPU = 325 watts + (I’ve seen my 2080 Ti Hydro Copper spike to over 400 watts, even with its 373 watt max bios)
Plus SSD’s OC’d memory and WiFi, LAN, onboard sound (or external card).
You’re looking at 600-700 watts or more depending on spikes and CPU used.... So your 860 watt PSU is maybe just enough to work.
The point to split the two 8pins would be to load the (possibly undersized) PSU more evenly on the single power rail or across a multi rail PSU.
It is generally recommended to load a PSU to around 50-60% for best performance. So with these numbers, owners of 2080 Ti should be running at least a 1000 watt PSU to help cover the extra draw these cards can and will draw. I’m currently running a 1200 watt PSU but considering upgrading to something bigger as a i9 9900k OC’d have been seen pulling close to 300 watts.
OC’d 9900k = 300w
2080 Ti = 400w
Fans and other system items = ~ 100w
That’s 800 watt usuage which is ~67% of my aging PSU (Antec TPQ-1200). Which age is another factory you have to account for as well.
Just my thoughts and input.
Chris
i run a EVGA SuperNOVA 1000 G1+ i had a EVGA 600 B1, 80+ BRONZE 600W when i was running my 1080ti, decided to upgrade the power supply when I picked up my 2080 Ti FTW3 ULTRA, running a lot of stuff like you said everything overclocked CPU, memory , gpu + 6 120mm fans
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/16 17:57:44
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markuaw1
icslowmo
I would take a solid guess that the splitters are for multi GPU setups that require 4 plug (2x per GPU).
Seeing as I’m seeing a lot of posts about failures of these 2080(Ti)’s, I’m starting to wonder if it maybe do to undersized PSU’s people are trying to run their systems on. Let’s do some math:
OC’d CPU of choice = 200 watts +
OC’d 2080(Ti) GPU = 325 watts + (I’ve seen my 2080 Ti Hydro Copper spike to over 400 watts, even with its 373 watt max bios)
Plus SSD’s OC’d memory and WiFi, LAN, onboard sound (or external card).
You’re looking at 600-700 watts or more depending on spikes and CPU used.... So your 860 watt PSU is maybe just enough to work.
The point to split the two 8pins would be to load the (possibly undersized) PSU more evenly on the single power rail or across a multi rail PSU.
It is generally recommended to load a PSU to around 50-60% for best performance. So with these numbers, owners of 2080 Ti should be running at least a 1000 watt PSU to help cover the extra draw these cards can and will draw. I’m currently running a 1200 watt PSU but considering upgrading to something bigger as a i9 9900k OC’d have been seen pulling close to 300 watts.
OC’d 9900k = 300w
2080 Ti = 400w
Fans and other system items = ~ 100w
That’s 800 watt usuage which is ~67% of my aging PSU (Antec TPQ-1200). Which age is another factory you have to account for as well.
Just my thoughts and input.
Chris
i run a EVGA SuperNOVA 1000 G1+ i had a EVGA 600 B1, 80+ BRONZE 600W when i was running my 1080ti, decided to upgrade the power supply when I picked up my 2080 Ti FTW3 ULTRA, running a lot of stuff like you said everything overclocked CPU, memory , gpu + 6 120mm fans
Have you checked your power usage? I would guess it is not as much as you would think. When I used to run SLI, I had a 1200 watt PSU. I bought the 860i when my 1200 watt AX died. I knew that I was done with SLI when I bought the 860i. I have never used anywhere near 860 watts. I don't know if the EVGA software allows you to monitor power usage, but they probably do. I would see how much power you are actually using.
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markuaw1
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Re: 2080 Ti, Power Cables?
2019/02/16 18:00:46
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chrisdglong
markuaw1
icslowmo
I would take a solid guess that the splitters are for multi GPU setups that require 4 plug (2x per GPU).
Seeing as I’m seeing a lot of posts about failures of these 2080(Ti)’s, I’m starting to wonder if it maybe do to undersized PSU’s people are trying to run their systems on. Let’s do some math:
OC’d CPU of choice = 200 watts +
OC’d 2080(Ti) GPU = 325 watts + (I’ve seen my 2080 Ti Hydro Copper spike to over 400 watts, even with its 373 watt max bios)
Plus SSD’s OC’d memory and WiFi, LAN, onboard sound (or external card).
You’re looking at 600-700 watts or more depending on spikes and CPU used.... So your 860 watt PSU is maybe just enough to work.
The point to split the two 8pins would be to load the (possibly undersized) PSU more evenly on the single power rail or across a multi rail PSU.
It is generally recommended to load a PSU to around 50-60% for best performance. So with these numbers, owners of 2080 Ti should be running at least a 1000 watt PSU to help cover the extra draw these cards can and will draw. I’m currently running a 1200 watt PSU but considering upgrading to something bigger as a i9 9900k OC’d have been seen pulling close to 300 watts.
OC’d 9900k = 300w
2080 Ti = 400w
Fans and other system items = ~ 100w
That’s 800 watt usuage which is ~67% of my aging PSU (Antec TPQ-1200). Which age is another factory you have to account for as well.
Just my thoughts and input.
Chris
i run a EVGA SuperNOVA 1000 G1+ i had a EVGA 600 B1, 80+ BRONZE 600W when i was running my 1080ti, decided to upgrade the power supply when I picked up my 2080 Ti FTW3 ULTRA, running a lot of stuff like you said everything overclocked CPU, memory , gpu + 6 120mm fans
Have you checked your power usage? I would guess it is not as much as you would think. When I used to run SLI, I had a 1200 watt PSU. I bought the 860i when my 1200 watt AX died. I knew that I was done with SLI when I bought the 860i. I have never used anywhere near 860 watts. I don't know if the EVGA software allows you to monitor power usage, but they probably do. I would see how much power you are actually using.
right around 55% using a Kill A Watt Energy Monitor I see just over 550 Watts at the outlet Max
post edited by markuaw1 - 2019/02/16 18:05:36
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bcavnaugh
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markuaw1
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Re: 2080 Ti, Power Cables?
2019/02/16 18:07:06
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bcavnaugh
Yes EVGA's Software Allows you to Monitor the Power Usage
yeah that's nice I like that, i use a Kill A Watt Energy Monitor to see what the system as a whole is using
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bcavnaugh
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Re: 2080 Ti, Power Cables?
2019/02/16 18:32:50
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markuaw1
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Re: 2080 Ti, Power Cables?
2019/02/16 19:06:43
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bcavnaugh
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icslowmo
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Re: 2080 Ti, Power Cables?
2019/02/16 20:10:58
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I upgraded from a 900 watt PSU to my current 1200 watt Antec when I has having issues with the system turning off back when I was running a i7 860 OC’d to 4.0Ghz and SLi EVGA GTX 480 SC both OC’d all under water... I was just trying to say, OC’ing adds a lot of power draw to a system. A little extra power won’t hurt. I’ve never actually had a PSU fail on me thus far. bcavnaugh, Those power draws are a good example. One PSU hit almost 700w and the other was over 300w, so over 1000w with a single 2080 Ti..??? helps add to my point that it seems power draw can be higher then some think. Chris
post edited by icslowmo - 2019/02/16 20:14:33
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chrisdglong
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Re: 2080 Ti, Power Cables?
2019/02/16 20:44:19
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Running a 2080Ti and 9900K right now, have been monitoring power all day. I have yet to go over 500 watts. Just using the OC Scanner profile on the card and have my ram at 3000Mhz. CPU is stock.
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Baratak
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Re: 2080 Ti, Power Cables?
2019/02/16 21:38:46
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400w at 12v is 33amps. It you are wiring a home circuit for 30 amps that requires #10, for 40amps #8. You are pulling almost as many amps as a stove and #8 isn't small. Go to Home Depot and look for yourself.
Heck, that is half the amperage pulled by the starter in your car, think of the wire size there.
those psu wires aren't very heavy, granted the run is shorter... but still. That is why Jay is seeing performance drop with a single cable split. I would guess in a long session on a single wire method, that wire warms and the voltage at the GPU side is measurably lower than on the PSU side.
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