Question One pcie cable acceptable for a gigabyte 3070 gaming oc

[spartanjack321]

Is using a molex to 6 pin safe for the 6 pin slot on a 3070? I have been doing this with a 1070ti for the past 4 years with no issue. The model of 3070 I'm getting has a 8pin and a 6pin just like the 1070ti I have currently. So question is regular 8 pin and molex to 6 pin okay?

 

[punkncat]

A 3070 is a long way from the power draw of a 1070 ti. Aside from not having recommended it in the first configuration, I certainly would not gamble the cost of a 30 series card against a PSU with the proper connectors.

 

[spartanjack321]

A 3070 is a long way from the power draw of a 1070 ti. Aside from not having recommended it in the first configuration, I certainly would not gamble the cost of a 30 series card against a PSU with the proper connectors.

The power supply has the proper connectors. Somewhere in my house. I used the Molex for my 1070ti because the card came with a Molex to 6pin in the box

 

[spartanjack321]

A 3070 is a long way from the power draw of a 1070 ti. Aside from not having recommended it in the first configuration, I certainly would not gamble the cost of a 30 series card against a PSU with the proper connectors.

What about the other 8pin that's on the same branch? I've seen someone use this on YouTube but not sure it's okay. It's two 8 pins on one cable but obviously in this scenario it would be used as one 8pin and a 6pin

 

[BFG-9000]

At 220w the 3070 technically shouldn't require the 6-pin at all except for overclocking headroom, so a two molex to 6-pin might be OK but it is 40w higher than the 1070Ti.

That is a lot of money to risk though, given the threads on how unplugging a power connector while running killed their GPU. So I would much rather use the 6-pin on the same cable.

Fun story, I burned up a two molex to 6-pin adapter (as in it caught on fire) because it was a counterfeit. The wires were all marked 18ga but after the insulation burned off I measured them at 28ga. Someone went through the trouble of counterfeiting wires with extra thick insulation to save a few pennies. The 250w GTX480 was unscathed.

 

[spartanjack321]

Okay so now my question changes. It's okay to use a "Pig-tail" cable on this 3070?
https://www.scan.co.uk/products/gig...r-gddr6-ray-tracing-graphics-card-5888-core-1

 

[punkncat]

As I mentioned before, doing said is a gamble that you are willing to take over the Molex adapter, which was (technically) designed to run something like a hard drive or supplemental fan or accessory against the price of a new and properly cabled PSU.

I see situations where a lot of people use this solution. I wouldn't personally gamble a $500+ GPU against a proper solution.

.02

 

[hotaru.hino]

A 4-pin molex connector is rated for up to 11A on the 12V line, which is more than plenty for a 6-pin PCIe connector.

So in theory it should be fine, but it depends if the connector was built to spec.

 

[spartanjack321]

As I mentioned before, doing said is a gamble that you are willing to take over the Molex adapter, which was (technically) designed to run something like a hard drive or supplemental fan or accessory against the price of a new and properly cabled PSU.

I see situations where a lot of people use this solution. I wouldn't personally gamble a $500+ GPU against a proper solution.

.02

Yes I know now the molex is abit sus. But what about the pig tailed double 8 pins? I've seen some use these and be fine? Ofc I'd use the 8 pin and then snap the other ones to use as a 6pin

 

[hotaru.hino]

Yes I know now the molex is abit sus. But what about the pig tailed double 8 pins? I've seen some use these and be fine? Ofc I'd use the 8 pin and then snap the other ones to use as a 6pin

Anything to double 8-pins that's not from a double 8-pin is even more sus.

 

[spartanjack321]

Anything to double 8-pins that's not from a double 8-pin is even more sus.

No this is double 8 pin. It's the regular pci 6+2 connectors where it has 2 6+2s on it. I'm just asking if it's okay to use both 6+2s instead of a separate cable

 

[ohio_buckeye]

I’ve seen where a molex to sata connector actually had caught fire inside a pc and melted the connectors on the hard drive it was connected to. There were also burn marks inside the case. Do you really trust a 500 dollar gpu to a 99 cent adapter? Do what you want but you should probably buy a new psu.