PSU cables

[Alternateline]

I’ve been using the standard ‘piggy back’ style power cable to deliver power to my 3070.

Read online that it would be better to have separate 8 and 6 pin cables, rathe than one cable that splits?

Any advice on whether this is junk news or not? If it’s good advice, anyone suggest where I can find the separate cables for purchase on OCUK?

 

[Alt0153]

you use one cable for each connector

 

[Alternateline]

you use one cable for each connector

Yeah but I don’t have enough cables. Any suggestions?

 

[Alt0153]

if you dont have 2 seperate cables you need a better power supply

 

[Tetras]

I’ve been using the standard ‘piggy back’ style power cable to deliver power to my 3070.

Read online that it would be better to have separate 8 and 6 pin cables, rathe than one cable that splits?

Any advice on whether this is junk news or not? If it’s good advice, anyone suggest where I can find the separate cables for purchase on OCUK?

It is best avoided, but if you have a decent PSU, then it's fine. I wouldn't worry about a 3070.

Some buildzoid blabs:

A look into daisy chained PCI-e power cables

AHOC Patreon/Shirts/Paypal/Junkyard:http://cxzoid.blogspot.co.uk/p/support-fail.htmlThe Twitch:https://www.twitch.tv/buildzoidThe blog: http://cxzoid.blogspo...

www.youtube.com

 

[Shingyboy]

I’ve been using the standard ‘piggy back’ style power cable to deliver power to my 3070.

Read online that it would be better to have separate 8 and 6 pin cables, rathe than one cable that splits?

Any advice on whether this is junk news or not? If it’s good advice, anyone suggest where I can find the separate cables for purchase on OCUK?

I believe you could try and contact your PSU manufacturer and they might just give you an extra set of cables for free. I have heard of this happening but not sure it is the case as I have never tried it myself.

 

[freddie64]

@Alternateline What PSU and 3070 have you got?

 

[Alternateline]

@Alternateline What PSU and 3070 have you got?

Its the Gigabyte Vision OC 3070 and Corsair RM750W PSU

 

[freddie64]

Are you sure you don't have the other PCI-E cable?

As you are already using "Daisy Chain", have you had any issues?

Corsair might send you another cable. (may be free, may be not)

Spoiler: Custom Cables

You could go the custom cable route and replace all your cables, not cheap though.

Example

My basket at OcUK:

• 1 x CableMod C-Series AXi, HXi, TX/CX/CS-M & RM ModFlex Essentials Cable Kit - Black/White (SKU: CM-153-CM) = £54.95

Total: £63.65 (includes delivery: £8.70)​

​

Please double check that these are compatible if you go this route

 

[xPETEZx]

Keep in mind that most PSUs now have a single 12V rail. So using multiple connectors from a single cable, or multiple cables makes little difference in load across that single 12V rail.

If you had a PSU with multiple 12V rails, using a single PCIe cable with splitter puts the entire GPU load on a single rail. So its possible the GPU could overload the single rail and cause the PSU to trip.
This isnt a concern on a single rail PSU.

The other concern seems to be around cables melting due to too much load being pulled. But I think this is mostly a non-issue. The PSU manufacutres obviously spec the wires inside the PCIe cable to handle more than 300W to cover both 8-pins at max 150W each.

I would not be concerned. Just enjoy your PC and game on. The 3070 is going to be drawing at max 250W~, barely enough to even need 2x connectos. (150W + 75W from the slot = 225W...)

Some folks just really want to scare monger...

 

[Alternateline]

Keep in mind that most PSUs now have a single 12V rail. So using multiple connectors from a single cable, or multiple cables makes little difference in load across that single 12V rail.

If you had a PSU with multiple 12V rails, using a single PCIe cable with splitter puts the entire GPU load on a single rail. So its possible the GPU could overload the single rail and cause the PSU to trip.
This isnt a concern on a single rail PSU.

The other concern seems to be around cables melting due to too much load being pulled. But I think this is mostly a non-issue. The PSU manufacutres obviously spec the wires inside the PCIe cable to handle more than 300W to cover both 8-pins at max 150W each.

I would not be concerned. Just enjoy your PC and game on. The 3070 is going to be drawing at max 250W~, barely enough to even need 2x connectos. (150W + 75W from the slot = 225W...)

Some folks just really want to scare monger...

As always, you can rely on this forum to give you a full and detailed answer. Thank you!