3 x 8 Pin GPU

[Mikealongo]

With all the noise that the 3 x 8 Pin power headers that the new 3080 (the ones that have 3), and people saying that you will need 3 psu Cables (and no daisy chained ones) im kind of curious...

 

Currently I have a 980 Strix (wich have 2 x 8 pins connectors) with only one cable atached (6 + 2 and daisy chained 6 + 2)

I have the EVGA 850 W G2 Supernova wich has 4 VGA connectors... I should have 2 separated cables each for each 8 pin?

Will  I need 3 when I bought (houpfuly soon) the 3080 strix? I would see any improvement?

 

If any (or both) are a yes, why does (6 + 2) + (6 + 2) VGA cables exists???

[ewitte]

Two physical cables is fine some of the reviews were even on a single cable for 2x8pin cards.  If a PSU includes 2x8pin single cables if they didn't design it for 300W they would be getting RMAs left and right.  Provided its a good PSU.

[Mikealongo]

11 minutes ago, ewitte said:

Two physical cables is fine some of the reviews were even on a single cable for 2x8pin cards.  If a PSU includes 2x8pin single cables if they didn't design it for 300W they would be getting RMAs left and right.  Provided its a good PSU.

I  think the same, is the new 3 cables movement that I dont understand, and having 4 of them made me think "maybe im wrong", "Maybe I will get more GPU power with 2 cables" 

 

I get that the power draw from the 980 its not the same as the 3080, but there is 3080 models with just 2 x 8 pins and some with 3 x 8 pins. so What is the best configuration? 2 cables in the 2 x 8 pins and 3 in the 3 x 8 pins?

 

Its a mess

[whm1974]

Why can't GPU designers just stick with a single 6+2 Pin only? Or better yet don't require any extra pins at all?

[spartaman64]

3 hours ago, whm1974 said:

Why can't GPU designers just stick with a single 6+2 Pin only? Or better yet don't require any extra pins at all?

because 8 pin pcie power is only rated for 150 watts

not quite enough for a 380w gpu

[spartaman64]

3 hours ago, Mikealongo said:

I  think the same, is the new 3 cables movement that I dont understand, and having 4 of them made me think "maybe im wrong", "Maybe I will get more GPU power with 2 cables" 

 

I get that the power draw from the 980 its not the same as the 3080, but there is 3080 models with just 2 x 8 pins and some with 3 x 8 pins. so What is the best configuration? 2 cables in the 2 x 8 pins and 3 in the 3 x 8 pins?

 

Its a mess

the 2x8 ones probably have the gpus locked at the stock power limit 

[whm1974]

21 minutes ago, spartaman64 said:

because 8 pin pcie power is only rated for 150 watts

not quite enough for a 380w gpu

So? Maybe I used to work with too many Prebuilts here but I myself had brought a High End video card that barely fit in my large case at the time. The HDD power cable was in the way...

[spartaman64]

1 minute ago, whm1974 said:

So? Maybe I used to work with too many Prebuilts here but I myself had brought a High End video card that barely fit in my large case at the time. The HDD power cable was in the way...

you can run higher wattage through it so you can probably get by with 2x8 pin but you really dont want to test for that limit and 1x8 pin is definitely not enough. either the pc will shutdown when you put load on the gpu or this will happen

[whm1974]

3 minutes ago, spartaman64 said:

you can run higher wattage through it so you can probably get by with 2x8 pin but you really dont want to test for that limit and 1x8 pin is definitely not enough. either the pc will shutdown when you put load on the gpu or this will happen

Sorry this was the early 2000's after I purchased a High End Nvidia Card from Best Buy instead of the Mid Range one they ran out of... Of Course I no longer buy computer hardware from Stores anymore...

[Mikealongo]

54 minutes ago, spartaman64 said:

you can run higher wattage through it so you can probably get by with 2x8 pin but you really dont want to test for that limit and 1x8 pin is definitely not enough. either the pc will shutdown when you put load on the gpu or this will happen

 

49 minutes ago, whm1974 said:

Sorry this was the early 2000's after I purchased a High End Nvidia Card from Best Buy instead of the Mid Range one they ran out of... Of Course I no longer buy computer hardware from Stores anymore...

My point here is that is misleading the fact that some 3080 cards have 3x8 pins (wich I can understand), but doesnt say that you need a PSU with with 3 cables because you cant/shouldnt use the daisy chained one.

 

Its not my case but some PSU (even 850 W ones) have only 2 PCI/VGA cables...

 

And in other way, (at least me) have never thought on puting 2 cables into 2x 8 pin instead of 1 cable with two ends... 

[whm1974]

2 minutes ago, Mikealongo said:

 

My point here is that is misleading the fact that some 3080 cards have 3x8 pins (wich I can understand), but doesnt say that you need a PSU with with 3 cables because you cant/shouldnt use the daisy chained one.

 

Its not my case but some PSU (even 850 W ones) have only 2 PCI/VGA cables...

 

And in other way, (at least me) have never thought on puting 2 cables into 2x 8 pin instead of 1 cable with two ends... 

I thought that dGPUs only used two cables with PSUs having only two PCIe power connectors.