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3080 Ti "3 x 8-Pin" vs "2 x 8-Pin" Models?

I see both out there, but I also keep reading that the cards are often power-hungry. I would have assumed a 2 x 8-Pin uses less power overall, so do they have more issues with power and worse thermals compared to 3 x 8-Pin models? I don't intend to overclock beyond whatever is done by the manufacturer.

5600x/6700xt

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The standard card pulls 350W it can pull about 65 from the motherboard then 150W from each 8 pin. So a 2 x 8 pin will be supplied by cables and sockets with a total maximum rating of 365W. Only 15W left before but if you add a 3rd 8 pin you now have a maximum rating of 515W plenty of extra for when the card needs it.

 

I would base my choice mainly on price. A card that has been designed with the expectation it will pull less power should in theory have a longer lifespan.

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5 minutes ago, Rameares said:

The standard card pulls 350W it can pull about 65 from the motherboard

75 from the motherboard.

17 minutes ago, varrys said:

I see both out there, but I also keep reading that the cards are often power-hungry. I would have assumed a 2 x 8-Pin uses less power overall, so do they have more issues with power and worse thermals compared to 3 x 8-Pin models? I don't intend to overclock beyond whatever is done by the manufacturer.

You will want a 3x8 pin if you want to overclock, but other than that the 2x8 will suffice.

/|\
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Look at this idiots post 🤣

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14 minutes ago, Cool_Evlo said:

75 from the motherboard.

You will want a 3x8 pin if you want to overclock, but other than that the 2x8 will suffice.

I don't plan to overclock. And my PSU is just 750W, though a good one. It's probably best to target the 2x8 models!

5600x/6700xt

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I have both. 

If you are not into overclocking it does not matter.

 

My EVGA XC3 Ultra 3080 ti is a 2x 8 pin and it does the frames I need.

 

My MSI Gaming X Trio 3080 ti is a 3x 8 pin and is a bit quicker but the few extra fames don't change the game play.

 

Neither card really have the power for serious overclocking. For that I recommend the ASUS ROG Strix OC 3080 ti. Since it is $800 more than the EVGA XC3 Ultra I will pass.  

 

 

 

RIG#1 CPU: AMD, R 7 5800X| Motherboard: X570 AORUS Master | RAM: Corsair Vengeance RGB Pro 32GB DDR4 3200 | GPU: EVGA RTX 3080 ti XC3 ULTRA | PSU: EVGA 1000 G+ | Case: Cooler Master H500P Mesh White | Cooler: EK 360mm AIO | SSD#1: Corsair MP600 1TB | SSD#2: Crucial MX500 2.5" 2TB | Monitor: LG 55" 4k B9 OLED TV

 

RIG#2 CPU: Intel i9 10900kf | Motherboard: Z490 AORUS Master | RAM: Corsair Vengeance RGB Pro 32GB DDR4 4000 | GPU: MSI Gaming X Trio 3080 ti | PSU: EVGA 1000 G+ | Case: Lian Li O11 Dynamic | Cooler: SilverStone PF360-ARGB AIO | SSD#1: Crucial P1 1TB | SSD#2: Crucial MX500 2.5" 1TB | Monitor: LG 55" 4k B9 OLED TV

 

RIG#3 CPU: Intel i9 9900k | Motherboard: AORUS Z390 Ultra | RAM: Ripjaws V Series 32GB DDR4 3200 | GPU: EVGA FTW3 Ultra 3080 ti  | PSU: EVGA 1000 G+ | Case: Cooler Master H500 | Cooler: Noctua NH-D15 | SSD: Crucial P2 1TB  | SSD#2: Samsung 860 QVO 2TB | Monitor: LG 49" NanoCell 85

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21 hours ago, varrys said:

I see both out there, but I also keep reading that the cards are often power-hungry. I would have assumed a 2 x 8-Pin uses less power overall, so do they have more issues with power and worse thermals compared to 3 x 8-Pin models? I don't intend to overclock beyond whatever is done by the manufacturer.

 

I would get a card with a decent cooler, the cooler a card runs the more likely its going to boost and give you more performance. It comes down to price too, compare the cards in your price range and decide for yourself what you think is worth it.

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Just now, Shlouski said:

 

I would get a card with a decent cooler, the cooler a card runs the more likely its going to boost and give you more performance. 

I have a 750W PSU, so ideally the lower the power draw from the GPU, the better. Some 80Ti's say the minimum PSU is 750, both 2x8 and 3x8. I'd assume the 2x8 would be slightly less power hungry, and that's what I'd want. Don't plan to overclock, but I understand that cooler = better performance. Just don't want to have to buy a new PSU to accommodate a huge cooler.

5600x/6700xt

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8 minutes ago, varrys said:

I have a 750W PSU, so ideally the lower the power draw from the GPU, the better. Some 80Ti's say the minimum PSU is 750, both 2x8 and 3x8. I'd assume the 2x8 would be slightly less power hungry, and that's what I'd want. Don't plan to overclock, but I understand that cooler = better performance. Just don't want to have to buy a new PSU to accommodate a huge cooler.

 

Recommended PSU numbers are pretty much useless and are just guidelines at best. How much power you need depends on your whole system, and not all 750w PSU's are built the same.

 

What is your system, and psu are using?

 

I have a 600w psu running my 3080, and it's running well in spec.

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Just now, Shlouski said:

 

PSU numbers are pretty much useless and are just guidelines at best. How much power you need depends on your whole system, and not all 750w PSU's are built the same.

 

What is your system, and psu are using?

 

I have a 600w psu running my 3080, and it's running well in spec.

https://pcpartpicker.com/list/kXrNdD

 

Ryzen 5600X for CPU, Radeon 6700 XT for GPU right now. PCPartpicker claims 409W on my system right now, so I should have room for a Ti.

5600x/6700xt

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9 minutes ago, varrys said:

Ryzen 5600X for CPU, Radeon 6700 XT for GPU right now. PCPartpicker claims 409W on my system right now, so I should have room for a Ti.

 

With 62.5 amps on the 12v rail, use any card you want, I wouldn't hesitate to throw a 3090 in that build.

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Just now, Shlouski said:

 

With 62.5 amps on the 12v rail use any card you want, I would hesitate to throw a 3090 in that build.

Fair. I wasn't planning on going 3090 or a Radeon 6900 XT. The 80 (Ti) is my choice if I can find out at store price and not resell markup.

5600x/6700xt

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1 minute ago, varrys said:

Fair. I wasn't planning on going 3090 or a Radeon 6900 XT. The 80 (Ti) is my choice if I can find out at store price and not resell markup.

 

Sorry I missed the n't

 

With 62.5 amps on the 12v rail, use any card you want, I wouldn't hesitate to throw a 3090 in that build.

 

You can put a 3090 in there no problem.

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6 minutes ago, Shlouski said:

 

Sorry I missed the n't

 

With 62.5 amps on the 12v rail, use any card you want, I wouldn't hesitate to throw a 3090 in that build.

 

You can put a 3090 in there no problem.

Ah, okay. So what about the ASRock OC Formula Radeon RX 6900 XT, which states it need a 1000W supply? My guess is you're saying anything that requires 750W, I shouldn't have to worry about. But if recommended requirements are higher, then best to avoid?

5600x/6700xt

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27 minutes ago, varrys said:

Ah, okay. So what about the ASRock OC Formula Radeon RX 6900 XT, which states it need a 1000W supply? My guess is you're saying anything that requires 750W, I shouldn't have to worry about. But if recommended requirements are higher, then best to avoid?

 

I have a 6900 XT, 6800 XT and 6700 XT running on a folding at home machine using a 1200w psu, and my 12v rail has amps to spare.

 

Recommended requirements for psu's are used to just give you an idea what you might need.

 

I also run a 5600x, but mine is OCed to hell on a triple rad and pulls over 130w, which is double the 65w its rated for.

I have an OCed 3090 pulling 450 watts.

A load of fans pulling around 40 watts.

This is on a 800w psu with around 66 amps on the 12v rail.

This leaves me with around 180 watts for the rest of the components that need 12v (many are on other rails), which is more than enough, and that's assuming my cpu and gpu are both at 100% load.

 

If you are running those parts at stock then I wouldn't have a problem running a 3090 or 6900xt in that system.

 

Of course it's good practice to have a nice buffer of available power left over, so more watts the better. 

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@varrys

 

5600x @ 4.8 all cores

64gb 3600mhz Ram

RTX 3090

9x 14cm fans

Triple rad and pump

Sound card.

 

Prime95 100% cpu load and kombuster 100% gpu load, keep in mind some of these watts will be on the other rails, but most will be on the 12v rail:

 

606 watts

20210916_184153.jpg.9c73f0f4839a8396de9f955e6945f02f.jpg

 

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