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Mark-McG

Powering VEGA 56 - new builder help

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Posted · Original PosterOP

Hi there,

 

I am nearing completion of my first ever build.

 

I have installed a VEGA 56 GPU and I am

now looking to power it. I notice that one the card there are two power sockets as expected. However I also notice that on my PCI-E power cable coming from the PSU has two plugs on it Which I could use to insert into both sockets on the GPU. Should I do this or should I be running two separate PCI-E power cables.

 

Apologies if this is a silly question, It’s my first build and I don’t want to damage any expensive parts 

 

thanks, Mark 

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What PSU do you have?


CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x8GB 3000MHz G.Skill Ripjaws 5 | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Corsair H100i AIO | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB | HDD: Seagate Ironwolf 8TB + 2x Seagate Ironwolf 6TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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Its actually best to plug in 2 separate cables. you actually lose a slight bit of performance from using the daisy chain cable. 

 

 


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Just now, Mark-McG said:

Corsair RM750X

Use two separate cables from the PSU.


CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x8GB 3000MHz G.Skill Ripjaws 5 | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Corsair H100i AIO | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB | HDD: Seagate Ironwolf 8TB + 2x Seagate Ironwolf 6TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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17 minutes ago, Spotty said:

Use two separate cables from the PSU.

Maybe I should do this too then.. got the RM550x and used the 8 pin + 6 pin on my 2070. (One cable$

 

i haven’t noticed any performance issues tho @Skiiwee29; is it a noticeable difference or should I be fine the way I have it now, or should I run that second seperate cable ?


 

MSI B450 Pro Gaming Pro Carbon AC | AMD Ryzen 2700x 1.35V @ 4.1GhZ  | NZXT  Kraken X52  MSI GeForce RTX2070 Armour | Corsair Vengeance LPX (2*8) 16GB 3200MhZ | Samsung 970 evo M.2Nvme 500GB Boot  / Samsung 860 evo 500GB SSD | Corsair RM550X (2018) | Fractal Design Meshify C white | Logitech G pro WirelessGigabyte Aurus AD27QD 

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Just now, Stormseeker9 said:

Maybe I should do this too then.. got the RM550x and used the 8 pin + 6 pin on my 2070. (One cable$

 

i haven’t noticed any performance issues tho @Skiiwee29; is it a noticeable difference or should I be fine the way I have it now, or should I run that second seperate cable ?

RTX2070 will be fine. Not a high power draw card like the Vega cards are, especially if you're overclocking the Vega or using custom bios.

It has absolutely nothing to do with gaming performance!

It's because with high powered cards you can draw too much current through the 8pin modular connector on the PSU side and can melt the cables/connector.

Like this post on another forum from a user when they were using a single cable for the 2x8pin PCIe connectors required for their HD7990 graphics card...
image.thumb.png.80e9b2e622dac7e13cff0343f9898b7d.png

image.png.97ba086612f5315d343e5fabd6425196.png

https://forums.evga.com/EVGA-POWER-SUPPLY-MELTED-CABLE-BURNED-RUINED-GPU-m2589605.aspx


CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x8GB 3000MHz G.Skill Ripjaws 5 | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Corsair H100i AIO | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB | HDD: Seagate Ironwolf 8TB + 2x Seagate Ironwolf 6TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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1 hour ago, Mark-McG said:

Corsair RM750X

Just use 2 Cables from the PSU to the GPU.

One might work but 2 are better due to lower resistance, lower voltage drop on the cable.


"Hell is full of good meanings, but Heaven is full of good works"

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