How Many PCI-e Slots Does This Power Supply Have Really?

[TechnicGeek]

Hello,

 

This Gigabyte power supply has 5 PCI-e slots, correct? Including slots for CPU.

 

If yes, then why does Gigabyte's specifications say it has 6 slots?

 

Here is a screenshot.

[Ben17]

Probley more than more than one connecter on each cable...

[Vishera]

5 minutes ago, TechnicGeek said:

Hello,

 

This Gigabyte power supply has 5 PCI-e slots, correct? Including slots for CPU.

 

If yes, then why does Gigabyte's specifications say it has 6 slots?

 

Here is a screenshot.

That's 4 if you use the PSU to power the CPU.

Could be a typo or that they send 6 PCI-E cables.

or it could be like what @Ben17 said.

[Ben17]

8 minutes ago, TechnicGeek said:

Hello

What model is it though?

[TechnicGeek]

10 minutes ago, Ben17 said:

What model is it though?

Gigabyte Aorus P850W 80+ GOLD Modular

[mariushm]

It doesn't have any slots.  It has connectors.

 

Also is it that hard to check the official page ?

 

See https://www.gigabyte.com/Power-Supply/GP-AP850GM#kf

 

 

 

You have 5  8 pin headers on the power supply. You can connect the 4 pci-e cables and one EPS cable if you want to.

Or. 3 pci-e cables and 2 cpu cables... up to you

 

[thedangerine]

Person above me nailed it on the answer with the image. But its four cables and two of them have two connectors per cable for anything with more than one 6 or 8 pin. Also I am fairly certain that you cannot use the cpu and pcie connectors interchangeably like that, they should be keyed differently and deliver different amounts of power. It is six with two cables having one connector and the other two have two.

[mariushm]

eps cable has 4 pairs of 12v wires.... good for 7a x 4 x 12v = 336w (according to ATX standard - the connectors can handle 9A, or 432w)

 

each 6+2 connector has 3 pairs of 12v+ground, the extra 2 pins are ground ....i suspect they reuse 2 pairs of wires on both connectors, and use one of each remaining pairs on the psu connector as the 3rd pair.

So if you plug both connectors on one cable into a video card, you have 56

6+2 connector 1 : 150w split across 3 pairs  = 50w per pair

6+2 connector 2 : 150w split across 3 pairs  = 50w per pair

 

at the psu end worst case scenario you'd have ...

pair 1 : 100w (50w from conn. 1, 50w from conn. 2)  -> 100w / 12v = 8.3a (technically safe)

pair2 : same , 100w

pair 3: 50w (one connector)

pair 4 : 50w (the other connector)

 

in real world the current will more of less even out between the pairs

[thedangerine]

14 hours ago, mariushm said:

eps cable has 4 pairs of 12v wires.... good for 7a x 4 x 12v = 336w (according to ATX standard - the connectors can handle 9A, or 432w)

 

each 6+2 connector has 3 pairs of 12v+ground, the extra 2 pins are ground ....i suspect they reuse 2 pairs of wires on both connectors, and use one of each remaining pairs on the psu connector as the 3rd pair.

So if you plug both connectors on one cable into a video card, you have 56

6+2 connector 1 : 150w split across 3 pairs  = 50w per pair

6+2 connector 2 : 150w split across 3 pairs  = 50w per pair

 

at the psu end worst case scenario you'd have ...

pair 1 : 100w (50w from conn. 1, 50w from conn. 2)  -> 100w / 12v = 8.3a (technically safe)

pair2 : same , 100w

pair 3: 50w (one connector)

pair 4 : 50w (the other connector)

 

in real world the current will more of less even out between the pairs

Yeah but the cable layout is not the same. You should not force an eps connector into a gpu or vice versa. They are keyed differently for a reason. Just because they can deliver the same wattage does not mean they can be used interchangeably. If you look at the image below you will see that the power and grounds are located in different spots which has the potential to cause big problems if you were to force them together

[mariushm]

Yes, they're different at the end where you plug into devices.

 

On the power supply end, the power supply manufacturer can use any connector they want, and any pinout they want.. there's no standard forcing them to make their cables compatible with other power supplies.

 

Here's a picture of what could be the wiring:

 

 

 

[thedangerine]

17 minutes ago, mariushm said:

Yes, they're different at the end where you plug into devices.

 

On the power supply end, the power supply manufacturer can use any connector they want, and any pinout they want.. there's no standard forcing them to make their cables compatible with other power supplies.

 

Here's a picture of what could be the wiring:

 

 

 

But why would you ever want to change that, you would still have something incorrectly keyed and have to force it in. The OP was not asking how many you could have if you mod the PSU, they asked how many PCIe power connectors there are. There are six total 6+2 pins (two singles two doubles) with two 4+4 pin eps 

[mariushm]

No, it's not FORCED IN.

 

The connectors on the power supply DON'T HAVE TO BE EPS or PCI-E 8 PIN keyed.  They can be UNIVERSAL, without keys (holes in the connector shaped a certain way so you can't plug them in)

 

The connector on the power supply is 8 pins,  4 ground, 4 12v ... it doesn't CARE that the cable actually has EPS at the other end, or has pci-e 8pin at the other end.  It can be a generic 2 x 4 pin connector.

 

It simply gives 12v through those wires.