Need Help Plz

[Bryan99]

So I recently just upgraded from an rx 5500 xt to a rx 5700 xt Red Devil, I’ve installed the new graphics card but when I turn on the pc my monitors are not getting any signal.

 

i plugged this cable into the new gpu that was previously plugged into the old one 

Edited September 10, 2020 by Bryan99

[M1ndflux]

Hi there, it seems it has a 16 PIN alimentation not only 8 as the previous one. So you would need one more cable as the one you already plugged in.

[Jurrunio]

Do not leave any power connectors unplugged. You need to use all of them.

 

In fact I can't even name cards that will run without all power connectors used, this isn't like CPUs which you can omit extra connectors on a low power draw CPU.

[sub68]

it needs another 8 pin power

[Helpful Tech Witch]

It probably pulls to much power for that poor 8pin pcie power. Looks like you need a new PSU. Or if it is modular, it will need another 8 pin cable.

[Helpful Tech Witch]

1 minute ago, Jurrunio said:

Do not leave any power connectors unplugged. You need to use all of them.

 

In fact I can't even name cards that will run without all power connectors used, this isn't like CPUs which you can omit extra connectors on a low power draw CPU.

some gpus have pcie power ports, but will run off board power.

[Jurrunio]

1 minute ago, HelpfulTechWizard said:

some gpus have pcie power ports, but will run off board power.

Examples? I have multiple 75w cards with extra power connectors, they will not work without the power connectors plugged in even if the PCIe slot is enough on paper

[Helpful Tech Witch]

2 minutes ago, Jurrunio said:

Examples? I have multiple 75w cards with extra power connectors, they will not work without the power connectors plugged in even if the PCIe slot is enough on paper

I got my rx480 to post, but it failed in windows. Some older cards have the connectors, but are like a 50-60w, and just use board. I cant think of one rn.

[MadPistol]

2 8-pin PCI-e power connectors. Both must be plugged in order to power the card.

[Bryan99]

9 minutes ago, HelpfulTechWizard said:

It probably pulls to much power for that poor 8pin pcie power. Looks like you need a new PSU. Or if it is modular, it will need another 8 pin cable.

I have a Corsair cp-9020120-uk CX series 450W 

 

Corsair CP-9020120-UK CX Series... https://www.amazon.co.uk/dp/B06WW51XBX?ref=ppx_pop_mob_ap_share

 

will I have to change this altogether or can I add to this 

[Helpful Tech Witch]

2 minutes ago, Bryan99 said:

I have a Corsair cp-9020120-uk CX series 450W 

 

Corsair CP-9020120-UK CX Series... https://www.amazon.co.uk/dp/B06WW51XBX?ref=ppx_pop_mob_ap_share

 

will I have to change this altogether or can I add to this 

it looks to be 1 8 pin, but take it out and double check. If it has 1, try swapping the pcie connector to the other port. If that fails, you need a new unit.

[MadPistol]

1 minute ago, Bryan99 said:

I have a Corsair cp-9020120-uk CX series 450W 

 

Corsair CP-9020120-UK CX Series... https://www.amazon.co.uk/dp/B06WW51XBX?ref=ppx_pop_mob_ap_share

 

will I have to change this altogether or can I add to this 

What's your CPU?

https://www.guru3d.com/articles-pages/msi-radeon-rx-5700-xt-gaming-x-review,8.html#:~:text=We rate this card at,550 Watt power supply unit.

 

Recommended 550-watt PSU. Your PSU only has 1 8-pin PCI-e power connector. You're going to need a new PSU.

[Bryan99]

9 minutes ago, MadPistol said:

What's your CPU?

https://www.guru3d.com/articles-pages/msi-radeon-rx-5700-xt-gaming-x-review,8.html#:~:text=We rate this card at,550 Watt power supply unit.

 

Recommended 550-watt PSU. Your PSU only has 1 8-pin PCI-e power connector. You're going to need a new PSU.

Ryzen 5 3600

[MadPistol]

Just now, Bryan99 said:

Ryzen 5 3600

I wouldn't risk it. You're right on the edge of that PSU's limits. You really should look at getting a 550-600 watt PSU.

[Jurrunio]

15 minutes ago, Bryan99 said:

I have a Corsair cp-9020120-uk CX series 450W 

 

Corsair CP-9020120-UK CX Series... https://www.amazon.co.uk/dp/B06WW51XBX?ref=ppx_pop_mob_ap_share

 

will I have to change this altogether or can I add to this 

must change, unlike the modular CX450M you only have 1 PCIe 8pin on the CX450.

 

r5 3600 + 5700XT is pretty tight for 450w PSU anyway

 

20 minutes ago, HelpfulTechWizard said:

I got my rx480 to post, but it failed in windows. 

Some cards have PCIe slot and cable share the same power plane (so it powers everything) but most custom cards don't (typically the GPU core doesnt receive power while the auxillary stuff like memory do). You're brave to try this on a card known to break PCIe slots by drawing too much power in the first place

https://www.eteknix.com/amd-radeon-rx-480-reportedly-frying-pcie-slots/

 

24 minutes ago, HelpfulTechWizard said:

Some older cards have the connectors, but are like a 50-60w, and just use board. I cant think of one rn.

Nowadays cards below 75w are considered too low end to have any extra power connectors already

[Helpful Tech Witch]

3 minutes ago, Jurrunio said:

Some cards have PCIe slot and cable share the same power plane (so it powers everything) but most custom cards don't (typically the GPU core doesnt receive power while the auxillary stuff like memory do). You're brave to try this on a card known to break PCIe slots by drawing too much power in the first place

https://www.eteknix.com/amd-radeon-rx-480-reportedly-frying-pcie-slots/

I didn try. Forgot to plug in my PCIE power when removing the GPU.