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  #1  
Old 12-21-2019, 06:40 PM
C-X C-X is offline
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Question RMx Series RM550x: Broken or not enough power?

Hi!

I'm building a new PC with an RMx Series RM550x power supply.

If I don't plug in the cables for the CPU and GPU the pc kinda starts, at least all the fans and LEDs are on. But when i connect all the cables i can hear a "click" when I press the power button but nothing happens.

The PC started one time with alle the cables plugged in, but went off again shorty after I put two connector for the keyboard and the mouse in the usb port.

My Components are:
- MSI MPG X570 Gaming Edge WIFI
- AMD Ryzen 7 3800X
- Zotac Gaming GeForce RTX 2070 SUPER AMP Extreme 8GB GDDR6

Is my power supply broken or does it not have enough power?
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  #2  
Old 12-23-2019, 05:57 PM
Nazgul Nazgul is offline
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My guess here........not enough power. If I were you, I'd get an 850W just to be on the safe side and I think nVidia site states that for a 2070S you'd need a 650W PSU.
I use 500-550W PSU when I building a super budget PC, with a video card that usually won't require the 8pin connector and it's either a Quad-Core or Dual-Core system.

Last edited by Nazgul; 12-23-2019 at 06:00 PM.
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Old 12-23-2019, 06:34 PM
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I like 850W+ power supplies which never seem to fail me.

Never go cheap on the PSU, you whole rig depends on it.
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  #4  
Old 12-24-2019, 09:16 AM
C-X C-X is offline
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I changed the PSU to 650W, but it's still the same. As long as the CPU is connected to the PSU the System won't start. Even if I disconnect the GPU. I can't imagine that the CPU alone needs more the 650W. Any idea what might be the problem?
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  #5  
Old 12-24-2019, 12:08 PM
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DevBiker DevBiker is offline
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Wrong cables?
There's something with your install that's narfed. It's hard for us to guess based on the information provided.
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  #6  
Old 12-24-2019, 10:23 PM
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Quote:
Originally Posted by C-X View Post
I changed the PSU to 650W, but it's still the same. As long as the CPU is connected to the PSU the System won't start. Even if I disconnect the GPU. I can't imagine that the CPU alone needs more the 650W. Any idea what might be the problem?
You might be improperly using a PCIe cable instead of the EPS12V cable for the CPU power.
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