Question Single 8 pin cable

[AKK2]

I have MSI A650BN psu and it has only 1 gpu cable, I was planning to use 3070 or 3070ti, is this risky ? What's the maximum gpu can this psu handle?

 

[Lutfij]

I have MSI A650BN psu and it has only 1 gpu cable, I was planning to use 3070 or 3070ti, is this risky?
Thumbrule, if you don't have the necessary connectors from your PSU for your components, you either have;
a| the wrong PSU for the job
or
b| the wrong components for the PSU

You should look into upgrading the PSU to something has native 12VHPWR connectors or dedicated harnesses for the adapters to the RTX3070Ti.

What's the maximum gpu can this psu handle?
How old is the PSU and what has it been powering through out it's tenure?

 

[AKK2]

I have MSI A650BN psu and it has only 1 gpu cable, I was planning to use 3070 or 3070ti, is this risky?
Thumbrule, if you don't have the necessary connectors from your PSU for your components, you either have;
a| the wrong PSU for the job
or
b| the wrong components for the PSU

You should look into upgrading the PSU to something has native 12VHPWR connectors or dedicated harnesses for the adapters to the RTX3070Ti.

What's the maximum gpu can this psu handle?
How old is the PSU and what has it been powering through out it's tenure?

its brand new, but i thought it had 2x8 connectors, i havent bought the gpu yet, and i cant return the psu.

 

[Eximo]

It should have two 8-pin connectors on a single cable according to the specifications. That is good for roughly 300W + 75W from the motherboard. As long as the GPU doesn't have more than dual 8-pin it should work okay.

Are you sure you aren't looking at the 8-pin EPS connector for the motherboard?

 

[bill001g]

Are you sure you put the correct part number in your post for the power supply.

The documents say is has 2 6+2 cables which are video cables

 

[AKK2]

Are you sure you put the correct part number in your post for the power supply.

The documents say is has 2 6+2 cables which are video cables

It should have two 8-pin connectors on a single cable according to the specifications. That is good for roughly 300W + 75W from the motherboard. As long as the GPU doesn't have more than dual 8-pin it should work okay.

Are you sure you aren't looking at the 8-pin EPS connector for the motherboard?

im sorry guys i meant single rail, yes its 2x8 cables, will a 3070 or ti run fine ?

 

[Eximo]

Single rail is a good thing. Means you can't over current based on how things are plugged in, only max power draw on the 12V rail. What most decent PSUs are these days. DC-DC single rail vs old multi-rail and/or group regulated PSUs.

It really depends on what the rest of the system has in it. If it is a reasonable consumer CPU that you don't plan to push to 200W+ while the GPU is going all out, it should be fine. (CPU gaming loads rarely break 100W, sustained)

 

[AKK2]

It should have two 8-pin connectors on a single cable according to the specifications. That is good for roughly 300W + 75W from the motherboard. As long as the GPU doesn't have more than dual 8-pin it should work okay.

Are you sure you aren't looking at the 8-pin EPS connector for the motherboard?

I mean I've seen the internet and all of em saying single cable is had, overheating etc, my cpu is ryzen 5 5500, am I good to go ?

 

[Eximo]

5500 is quite light that will be fine.

Some people argue against daisy chained cables, but most aren't thinking about the actual construction. They use a thicker gauge wire which can carry more current. Typically 4 12V 16 gauge wires, which is more than adequate for dual 8-pin connectors each having 3 18 gauge wires.

Another way to look at it. An 8-pin EPS cable is rated for 336W. Each 8-pin PCie is rated for 150W. Typically PSUs use the same connector at the PSU end (if modular) for both and make them interchangeable.

4 16 gauge wires should comfortably be able to handle 640W at 12V before issues started happening. Even worst case if they cheaped out with 18 gauge wire, that should still be capable of handling around 360W before noticeable temperature/voltage droop.